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C-Nav C-Nav3050 User Manual - Table Of Contents

Other manuals for C-Nav3050: Quick Start Manual, User Manual

Summary of C-Nav3050

  • Page 1

    C-nav3050 user guide revision 10 page 1 of 186 6/8/2015 c-nav3050 user guide revision 10 revision date: june 8, 2015 c-nav solutions 730 e. Kaliste saloom road lafayette, la 70508 u.S.A. Www.Cnav.Com.

  • Page 2

    C-nav3050 user guide revision 10 page 2 of 186 6/8/2015 release notice this is the june 2015 release of the c-nav3050 user guide (p/n cnv96-310034-3001) revision history 10 6/08/2015 added c-nav286 and ad591 antenna specs. Added mailing list info updated appendix g lc 9 10/28/2014 appendix a: added ...

  • Page 3

    C-nav3050 user guide revision 10 page 3 of 186 6/8/2015 nct rev. E c-nav rev. F nov 2011 corrected 1pps pulse characteristics in chapter 3 – interfacing and appendix a – specifications. Added updated c-navc 2 performance specifications throughout. Changed c-nav subscription service availability to ’...

  • Page 4

    C-nav3050 user guide revision 10 page 4 of 186 6/8/2015 (figure 8, table 10), chapter 2 - antennas section, and appendix b – antenna specifications section (table b2, figures b7 & b8); added additional information to rtk paragraph in chapter 2 - system overview section; added l1-rtk information to c...

  • Page 5

    C-nav3050 user guide revision 10 page 5 of 186 6/8/2015 features section; added multi-frequency rtk, heading, slew and velocity to appendix a - measurement performance section; added pdop disclaimer to appendix a - measurement performance section; added rtk extend information on rover receiver to ap...

  • Page 6

    C-nav3050 user guide revision 10 page 6 of 186 6/8/2015 trademarks the c-nav logo is a trademark of c & c technologies, inc. C-nav, c-setup, c-monitor, c-navigator, and c-nav3050 aretrademarks of c & c technologies, inc. All other brand names are trademarks of their respective holders. Disclaimer of...

  • Page 7: Table Of Contents

    C-nav3050 user guide revision 10 page 7 of 186 6/8/2015 table of contents trademarks ....................................................................................................... 6 disclaimer of warranty .........................................................................................

  • Page 8

    C-nav3050 user guide revision 10 page 8 of 186 6/8/2015 standard .......................................................................................................... 47 c-nav286 ........................................................................................................ 47 ad591 .....

  • Page 9

    C-nav3050 user guide revision 10 page 9 of 186 6/8/2015 base and rover navigation setup .................................................................. 79 profiles ............................................................................................................ 79 section 6 - safety in...

  • Page 10

    C-nav3050 user guide revision 10 page 10 of 186 6/8/2015 base antenna radiation pattern ................................................................... 103 appendix c - c-nav corrections service (ccs) ............................................... 104 description ..................................

  • Page 11

    C-nav3050 user guide revision 10 page 11 of 186 6/8/2015 nmeapnctset (ascii) .............................................................................. 144 appendix e - l-band correction signals ........................................................... 145 appendix f - event input configuratio...

  • Page 12: List Of Figures

    C-nav3050 user guide revision 10 page 12 of 186 6/8/2015 list of figures figure 1: c-nav3050 rear view ......................................................................... 24 figure 2: c-nav3050 led indicator panel .......................................................... 25 figure 3: c-nav305...

  • Page 13

    C-nav3050 user guide revision 10 page 13 of 186 6/8/2015 figure 33:antenna, adaptor and mounting pole ................................................ 69 figure 34:c-nav3050 antenna mast installation ............................................... 70 figure 35:communication port connections ...........

  • Page 14: List Of Tables

    C-nav3050 user guide revision 10 page 14 of 186 6/8/2015 list of tables table 1: c-nav3050 gnss sensor kit (cnv92-310416-3001lf) - supplied equipment. .......................................................................................................... 27 table 2: c-nav3050 without the standard...

  • Page 15

    C-nav3050 user guide revision 10 page 15 of 186 6/8/2015 table 33: alm message output format ........................................................... 112 table 34: dtm message output format ........................................................... 113 table 35: dtm message output for each nav m...

  • Page 16

    C-nav3050 user guide revision 10 page 16 of 186 6/8/2015 manual organization this section describes how the manual is laid out. It gives one or two sentence descriptions about each major section. Section 1 - getting started (page 23 ) provides instructions to enable the robust functionality of the c...

  • Page 17

    C-nav3050 user guide revision 10 page 17 of 186 6/8/2015 appendix e - l-band correction signals (page 145 ) provides the user information on l-band correction signals for the c-nav3050. Appendix f - event input configuration (page 146 ) provides the user information on event input configuration. App...

  • Page 18

    C-nav3050 user guide revision 10 page 18 of 186 6/8/2015 for further details on the c-nav corrections service (ccs), subscriptions, deactivations, terms, conditions and its capabilities, refer to appendix c - c-nav corrections service (ccs) (page 104 ), of this manual or send an email inquiry to: su...

  • Page 19

    C-nav3050 user guide revision 10 page 19 of 186 6/8/2015 related documents c-nav3050 quick start guide provides instructions to quickly set up the standard configuration of the c- nav3050, and how to obtain a c-nav license. Related standards icd-gps-200 navstar gps space segment / navigation user in...

  • Page 20

    C-nav3050 user guide revision 10 page 20 of 186 6/8/2015 rinex receiver independent exchange format; astronomical institute of the university of bern qzss quasi zenith satellite system. Japan aerospace exploration agency (jaxa). 7- 44-1 jindaiji higashi-machi, chofu-shi, tokyo 182-8522. Nmea-0183 na...

  • Page 21

    C-nav3050 user guide revision 10 page 21 of 186 6/8/2015 egnos (european geostationary navigation overlay service) european space agency. 8, 10 rue mario-nikis, f-75738 paris cedex 15, france. Msas (mtsat satellite-based augmentation system) japan civil aviation bureau. Ministry of transport. Kasumi...

  • Page 22

    C-nav3050 user guide revision 10 page 22 of 186 6/8/2015 manual conventions arial font is used for plain text in this document. Arial italic font is used for settings names. “arial quoted” font is used for settings values. Arial bold font is used for button names. Arial bold italic font is used for ...

  • Page 23

    C-nav3050 user guide revision 10 page 23 of 186 6/8/2015 section 1 - getting started hardware setup this chapter provides instructions to enable the robust functionality of the c- nav3050. Confirm that all ordered equipment is delivered. Refer below for the following tables: supplied equipment: tabl...

  • Page 24

    C-nav3050 user guide revision 10 page 24 of 186 6/8/2015 figure 1: c-nav3050 rear view 1. Use one of the two supplied data cables for communications: ethernet rj45 / db9s female y-cable (nav94-310272-3006lfb): connect the positronic 9-pin connector of the cable to com1 - lan at the rear of c-nav3050...

  • Page 25

    C-nav3050 user guide revision 10 page 25 of 186 6/8/2015 the connector labeled power , at the rear of the c-nav3050. Insert an ac power cord into the 2-prong receptacle on the psu, based on regional ac power availability (110, 220 or 240 vac power cords provided) and plug into an appropriately rated...

  • Page 26

    C-nav3050 user guide revision 10 page 26 of 186 6/8/2015 c-nav3050 supplied equipment figure 3: c-nav3050 gnss sensor kit (p/n cnv92-310416-3001lf) - supplied equipment.

  • Page 27

    C-nav3050 user guide revision 10 page 27 of 186 6/8/2015 1 c-nav3050 gnss sensor cnv92-310413-3002lf 2 gnss antenna, tnc, 5/8” mount nav82-001020-3001lf 3 y-cable, positronic 9-pin male to usb 2.0 device plug & db9s (rs-232 / rs-422), 6 ft nav94-310273-3006lf 4 y-cable, positronic 9-pin male to ethe...

  • Page 28

    C-nav3050 user guide revision 10 page 28 of 186 6/8/2015 c-nav3050 without standard antenna for the end users who wish to utilize a non-standard antenna with the c- nav3050, they can do so by ordering the c-nav3050 without the antenna (p/n cnv92-310416-3001b)..

  • Page 29

    C-nav3050 user guide revision 10 page 29 of 186 6/8/2015 c-nav3050 without standard antenna, supplied equipment figure 4: c-nav3050 without the standard antenna (cnv92-310416-3001b) - supplied equipment.

  • Page 30

    C-nav3050 user guide revision 10 page 30 of 186 6/8/2015 table 2: c-nav3050 without the standard antenna (cnv92-310416-3001b) - supplied equipment receiver software options software bundles please note: in order to access the c-nav corrections service (ccs), users must purchase either software bundl...

  • Page 31

    C-nav3050 user guide revision 10 page 31 of 186 6/8/2015 gps l1/g1/ + c-nav enabled nav97-310041-3101 table 3: software bundle a (nav97-310041-3101) gps l1/l2/l5, glonass g1/g2 + c-nav enabled nav97-310041-3103 table 4: software bundle g (nav97-310041-3103) data output rates pvt and raw data maximum...

  • Page 32

    C-nav3050 user guide revision 10 page 32 of 186 6/8/2015 electrical power power cable w/ filter figure 5: dc power cable w/ filter cable, power / 1pps / event, positronic 9-pin female unterminated, 10ft, w/ filter nav94-310274-3010lf table 7: dc power cable w/ filter (nav94-310274-3010lf) ac power s...

  • Page 33

    C-nav3050 user guide revision 10 page 33 of 186 6/8/2015 positronic 9-pin female universal ac/dc power adapter 110-220 vac, 12 vdc, 1.50 a nav82-020007-3001lf ac power cord, iec320-c7, shotgun termination, us 4250011-110 ac power cord, iec320-c7, shotgun termination, euro (not shown) 4250012-220 ac ...

  • Page 34

    C-nav3050 user guide revision 10 page 34 of 186 6/8/2015 figure 8: optional antenna cables table 10: optional antenna cables antennas figure 9: optional base, airborne, standard, c-nav286 and ad591 antennas cable, antenna, tnc-m to tnc-m, lmr400, 45m 4000100-150 cable, antenna, tnc-m to tnc-m, lmr40...

  • Page 35

    C-nav3050 user guide revision 10 page 35 of 186 6/8/2015 standard antenna, tnc nav82-001020-3001lf c-nav286 out of band rejection antenna, tnc at1675-286 ad591 out of band rejection antenna, tnc aliad591 rtk base antenna, tnc nav82-001021-3001lf airborne gnss antenna, tnc nav82-001022-3001lf table 1...

  • Page 36

    C-nav3050 user guide revision 10 page 36 of 186 6/8/2015 figure 11: ruggedized transportation case table 13: miscellaneous (option) ruggedized case, c-nav3050, black , 20” x 14” x 7.7” cnv3050case ruggedized case, c- navigator, black, 20” x 14” x 7.7” 3gtr005-0

  • Page 37: Section 2 - Introduction

    C-nav3050 user guide revision 10 page 37 of 186 6/8/2015 section 2 - introduction system overview gnss sensor system the c-nav3050 global navigation satellite systems (gnss) sensor delivers superior accuracy to the marine / offshore community. This unique receiver is designed with a robust and long-...

  • Page 38

    C-nav3050 user guide revision 10 page 38 of 186 6/8/2015 for more information on the c-nav corrections service and obtaining a license, refer to appendix c - c-nav corrections service (ccs) (page 104 ). Signal reception: the c-nav3050 gnss engine provides exceptional signal tracking performance by i...

  • Page 39

    C-nav3050 user guide revision 10 page 39 of 186 6/8/2015 railway, ship, and aircraft precision tracking port operations and container tracking survey and gis boundary survey topographical surveys in rough terrain construction site stake-out high-accuracy data collection for post-processing hydrograp...

  • Page 40

    C-nav3050 user guide revision 10 page 40 of 186 6/8/2015 accuracy l1-rtk l1-rtk supports 1 cm accuracy (1 ơ) and is valid for up to a 5 km baseline. Sbas when waas, egnos, msas, or gagan (rtca / do-229d compliant) sbas correction signals are used, the system provides (1ơ). System accuracy with waas,...

  • Page 41

    C-nav3050 user guide revision 10 page 41 of 186 6/8/2015 velocity & heading (pvt1b) signal to noise (chnlstatus1b) channel status (chnlstatus1b) measurement quality (pvt1b and pseudorangestatsb) c-nav signal status (sfstatus1b) installed software components (msgversion) product type, serial no. And ...

  • Page 42

    C-nav3050 user guide revision 10 page 42 of 186 6/8/2015 rtcm1020: glonass ephemerides rtcm1033: receiver and antenna nmea-0183 data the c-nav3050 is capable of outputting several standard nmea-0183 data strings (see appendix d - nmea data output messages (page 112 )) and several proprietary data st...

  • Page 43

    C-nav3050 user guide revision 10 page 43 of 186 6/8/2015 mde: marginally detectable error set: solid earth tide unique features the c-nav3050 gnss sensor has many unique features: performance upgrade path the c-nav3050 is designed with a robust and long-term performance upgrade path to meet changing...

  • Page 44

    C-nav3050 user guide revision 10 page 44 of 186 6/8/2015 nav3050 is capable of outputting or accepting legacy 0x5b (rtk) or 0x5e (ultrartk) binary formats. Positioning flexibility the c-nav3050 is capable of using waas, egnos, msas, and gagan (rtca / do-229 d compliant) code corrections via two inte...

  • Page 45

    C-nav3050 user guide revision 10 page 45 of 186 6/8/2015 position ten times per second (10 hz) using any available augmentation signal. The moving base outputs position and rtk measurement corrections to the other unit, which is configured as a heading rover. The heading rover computes the heading l...

  • Page 46

    C-nav3050 user guide revision 10 page 46 of 186 6/8/2015 control of power consumption power consumption may be immediately reduced on the c-nav3050 by disabling signals, as necessary, using c-nav proprietary controller software. Contact c- nav support for more information. Continuously operating ref...

  • Page 47

    C-nav3050 user guide revision 10 page 47 of 186 6/8/2015 antennas standard the standard integrated gnss antenna (nav82-001020-3001lf) tracks gps (l1, l2, l2c, l5), glonass (g1, g2), c-nav corrections (ccs) service (l- band differential corrections), and sbas (waas / egnos / msas / gagan) signals. Th...

  • Page 48

    C-nav3050 user guide revision 10 page 48 of 186 6/8/2015 ad591 the ad591 is gnss antenna (aliad591) housed in hard anodized, dichromate, and nickel acetate sealed aluminum with 4mm thick grp pressure molded radome. It has >95 db of out of band rejection of the immarsat up link. . It tracks gps (l1, ...

  • Page 49

    C-nav3050 user guide revision 10 page 49 of 186 6/8/2015 link: antenna calibration. The robust housing assembly features a standard 5/8” bsw thread to permanently install the antenna. It is certified to 70,000 feet. Airborne the base integrated gnss antenna (nav82-001021-3001lf) tracks gps (l1, l2, ...

  • Page 50: Section 3 - Interfacing

    C-nav3050 user guide revision 10 page 50 of 186 6/8/2015 section 3 - interfacing this chapter details the c-nav3050 gnss sensor connectors, cables, led displays, appropriate sources of electrical power, and how to interface the communication ports. Electrical power a rear panel 9-pin positronic male...

  • Page 51

    C-nav3050 user guide revision 10 page 51 of 186 6/8/2015 color signal pin no blue 1pps out * 1 brown ignition 2 yellow event 3 black power return 5 red power input (9 to 32vdc, 6w typical) 6 green not used 7 violet not used 8 gray gnd 9 table 14: dc power cable pin assignments please note: pin 4 has...

  • Page 52

    C-nav3050 user guide revision 10 page 52 of 186 6/8/2015 unterminated dc power cable with filter (nav94-310274-3010lf) approved dc to dc power converter. The converter isolates the c- nav3050 power and chassis grounds. The gnss sensor is protected from reverse polarity with an inline diode. It will ...

  • Page 53

    C-nav3050 user guide revision 10 page 53 of 186 6/8/2015 power source c-nav3050 12 vdc ground 12 vdc ignition figure 15: proper external power source setup communication ports the c-nav3050 provides two 9-pin female positronic connector communication ports labeled com1 - lan and com2 - usb located a...

  • Page 54

    C-nav3050 user guide revision 10 page 54 of 186 6/8/2015 com1 - lan & ethernet / 1pps / db9s y-cable conforms to the eia rs-232 standard with data rates from 9.6 to 115.2 kbps max conforms to the ieee 802.3 ethernet standard with data rates from 10 to 100 mbps the com1 - lan connector pin-outs relat...

  • Page 55

    C-nav3050 user guide revision 10 page 55 of 186 6/8/2015 com2 - usb & usb / db9s y-cable conforms to the eia rs-232 / rs-422 standard with data rates from 9.6 to 115.2 kbps max usb 2.0 compliant with 12 mbps maximum data rate. The com2 - usb connector pin-outs relative to the supplied usb device / d...

  • Page 56

    C-nav3050 user guide revision 10 page 56 of 186 6/8/2015 rs-232 / rs-422 dual-data adapter figure 19: rs-232 / rs-422 dual-data adapter figure 20: rs-232 / rs-422 dual-data adapter pin assignment accessories optional data cables the optional interface data cables support usb 2.0 device and host, eth...

  • Page 57

    C-nav3050 user guide revision 10 page 57 of 186 6/8/2015 figure 21: optional data cables 1 positronic 9-pin male to usb 2.0 host receptacle, 6 ft nav94-310271-3006lf 2 positronic 9-pin male to ethernet rj45 plug, 6 ft nav94-310265-3006lf 3 positronic 9-pin male to db9s (rs-232 / rs-422 / 1pps) data ...

  • Page 58

    C-nav3050 user guide revision 10 page 58 of 186 6/8/2015 table 18: optional usb host cable pin assignment figure 22: optional usb host cable pin assignment usb device cable p/n nav94-310266-3006lf is an optional 6ft (1.83m) data cable fitted with a positronic plug type and a usb a plug type, used to...

  • Page 59

    C-nav3050 user guide revision 10 page 59 of 186 6/8/2015 figure 23: usb device cable pin assignment ethernet cable p/n nav94-310265-3006lf is an optional 6 ft (1.83 m) data cable fitted with a positronic plug type and an ethernet rj45 plug type, used to connect directly to an ethernet connector. The...

  • Page 60

    C-nav3050 user guide revision 10 page 60 of 186 6/8/2015 db9s cable (connected to com1) p/n nav94-310260-3006lf is an optional 6 ft (1.83 m) data cable fitted with a positronic plug type and a db9s connector, used to connect directly to a db9p serial port. The db9s cable can be used to connect to ei...

  • Page 61

    C-nav3050 user guide revision 10 page 61 of 186 6/8/2015 db9s cable (connected to com2) p/n nav94-310260-3006lf is an optional 6 ft (1.83 m) data cable fitted with a positronic plug type and a db9s connector, used to connect directly to a db9p serial port. The db9s cable can be used to connect to ei...

  • Page 62

    C-nav3050 user guide revision 10 page 62 of 186 6/8/2015 event the c-nav3050 accepts an event input pulse to synchronize external incidents requiring precise gnss time tagging, such as aerial photography. For example, the action of a camera’s shutter creates an input pulse to the event port. The c- ...

  • Page 63

    C-nav3050 user guide revision 10 page 63 of 186 6/8/2015 figure 27: 1pps adapter figure 28: 1pps adapter pin assignment.

  • Page 64

    C-nav3050 user guide revision 10 page 64 of 186 6/8/2015 indicator panel figure 29: c-nav3050 indicator panel the indicator panel provides a quick status view of the gnss navigation / operating mode, c-nav signal strength, the on / off (i/o) switch, data i/o and logging, and bluetooth connectivity, ...

  • Page 65

    C-nav3050 user guide revision 10 page 65 of 186 6/8/2015 start when all memory buffers are full at the beginning, and continue for ten minutes and five seconds, and then stop. When data logging is started, every five minutes statistical data such as data loss and data loss ratio will be computed. Wh...

  • Page 66

    C-nav3050 user guide revision 10 page 66 of 186 6/8/2015 data i/o active leds table 26: data i/o active led indication (serial connections only) bluetooth connectivity leds table 27: bluetooth connectivity led indication icon indicator status description data off no data output green blinking data i...

  • Page 67: Section 4 - Installation

    C-nav3050 user guide revision 10 page 67 of 186 6/8/2015 section 4 - installation this chapter provides guidance on hardware installation for optimum performance. Prior to commencing any installation, discuss proposed mounting locations / methods and cable routes with those involved to ensure all pa...

  • Page 68

    C-nav3050 user guide revision 10 page 68 of 186 6/8/2015 antenna location locate the antenna where it has a clear view of the sky, to an elevation angle of 7º if possible. Obstructions below 15º elevation generally are not a problem, though this is dependent on satellite availability for the local r...

  • Page 69

    C-nav3050 user guide revision 10 page 69 of 186 6/8/2015 a clear line of sight between the antenna and the local inmarsat satellite is required to track the c-nav corrections service (ccs) signal. Inmarsat satellites are geo-synchronized 35,786 kms above the equator. Antenna mounting pole included w...

  • Page 70

    C-nav3050 user guide revision 10 page 70 of 186 6/8/2015 antenna installation 1. Once the antenna location has been determined based on the aforementioned criteria, mount the antenna onto an antenna-mounting pole via the antenna mounting pole adaptor. This should be done on deck prior to climbing th...

  • Page 71

    C-nav3050 user guide revision 10 page 71 of 186 6/8/2015 cable route when choosing a cable route for coaxial cable, consider the following: avoid running coaxial cable across, or parallel too power cables and high power rf cables. Ensure that the cable route is free of sharp edges or places where th...

  • Page 72

    C-nav3050 user guide revision 10 page 72 of 186 6/8/2015 2. Slacken the coaxial cable and tape firmly to the antenna-mounting pole. This will prevent any undue strain on the cable connector and antenna. 3. With the cable connected to the antenna, run the cable down the mast, securing with zip ties e...

  • Page 73

    C-nav3050 user guide revision 10 page 73 of 186 6/8/2015 support for more information on available lightning protection solutions. Gnss sensor mount the c-nav3050 gnss sensor to a flat surface. Shock isolators suitable for 0.50 kg (1.1 lbs) may be necessary for environments with high vibration, i.E....

  • Page 74

    C-nav3050 user guide revision 10 page 74 of 186 6/8/2015 figure 35: communication port connections basics of rtk surveying rtk (real-time kinematic) is a gnss system that yields very accurate 3d position fixes immediately in real-time. A reference station (base station) transmits its gnss position t...

  • Page 75

    C-nav3050 user guide revision 10 page 75 of 186 6/8/2015 sensor above the roving sensors is recommended to enable transmission to all rovers in all directions with minimal obstruction. High frequency radio signals generally travel a shorter distance than lower frequency signals, and do not penetrate...

  • Page 76: Section 5 - Configuration

    C-nav3050 user guide revision 10 page 76 of 186 6/8/2015 section 5 - configuration the c-nav3050 has a rich interface and detailed control language, allowing each unit to be individually programmed to a specific application. There are essentially four methods available to configure and control the c...

  • Page 77

    C-nav3050 user guide revision 10 page 77 of 186 6/8/2015 these five ports (com1, eth1, eth2, eth3, and eth4) normally used to input and output proprietary messages used for navigation and receiver setup. It is also the only port that can be used to receive ntrip or ccs oti through the rj- 45 etherne...

  • Page 78

    C-nav3050 user guide revision 10 page 78 of 186 6/8/2015 pdop, tracked satellite identity, satellite elevation and azimuth, c/no for tracked signals and correction age for each satellite. Ephem1b (packed ephemeris): individual satellite tracking information including gps week number of collected eph...

  • Page 79

    C-nav3050 user guide revision 10 page 79 of 186 6/8/2015 rtcm24: base position (combined rtcm3 and rtcm22) rtcm31 and rtcm34: code glonass corrections rtcm1001: l1-only gps rtk observables rtcm1002: extended l1-only gps rtk observables rtcm1003: l1 and l2 gps rtk observables rtcm1004: extended l1 an...

  • Page 80

    C-nav3050 user guide revision 10 page 80 of 186 6/8/2015 please note: a new profile sent to the receiver replaces the currently used profile, but it does not necessarily replace all the current parameter settings. The new profile replaces only those parameter settings that it specifies. For example:...

  • Page 81

    C-nav3050 user guide revision 10 page 81 of 186 6/8/2015 section 6 - safety instructions the c-nav3050 gnss sensor is designed for precise navigation and positioning using the gps and glonass. Users must be familiar with the use of portable gnss equipment, the limitations thereof and these safety in...

  • Page 82

    C-nav3050 user guide revision 10 page 82 of 186 6/8/2015 if your chosen external power source is a disposable battery, please dispose of the battery in accordance with your local regulations. Safety first the owner of this equipment must ensure that all users are properly trained prior to using the ...

  • Page 83: Appendix A - Gnss Sensor

    C-nav3050 user guide revision 10 page 83 of 186 6/8/2015 appendix a - gnss sensor specifications the technical specifications of this unit are detailed below. C-nav is constantly improving, and updating our technology. For the latest technical specifications for all products go to: www.Cnav.Com this...

  • Page 84

    C-nav3050 user guide revision 10 page 84 of 186 6/8/2015 heading programmable output rates event marker input 1pps output communication ports: rs-232, rs-422, usb 2.0 (device and host), bluetooth, and ethernet performance c-nav3050 performance is dependent on location, satellite geometry, atmospheri...

  • Page 85

    C-nav3050 user guide revision 10 page 85 of 186 6/8/2015 signals tracked navigation & public correction signals services include: gps l1, and sbas (waas, egnos, msas, gagan); all at the same frequency: 1575.42 mhz, 16 mhz services include: gps (l2, l2c); all at the same frequency: 1227.60 mhz, 16 mh...

  • Page 86

    C-nav3050 user guide revision 10 page 86 of 186 6/8/2015 measurement precision (1ơ/rms, unless otherwise stated) raw c/a code: raw carrier phase noise: 7.50 cm l1: 0.7 mm l2: 0.9 mm rtk positioning - multi-frequency position (h): position (v): + 1 cm + 0.5 ppm + 2 cm + 1 ppm rtk positioning - single...

  • Page 87

    C-nav3050 user guide revision 10 page 87 of 186 6/8/2015 measurement performance please note: the specifications herein are based on the following: pdop (65%), 24-hour averaged set of data. Further, performance is dependent upon, but not limited to, location, satellite geometry, atmospheric conditio...

  • Page 88

    C-nav3050 user guide revision 10 page 88 of 186 6/8/2015 mode. This option is only required on the rover receiver. If a base receiver may be used as a rover at a future date, it should be optioned for rtk extend as well . Receiver noise figure 17.0 db +0.5 db @ 290º kelvin; 1 hz rbw dynamics 1 restr...

  • Page 89

    C-nav3050 user guide revision 10 page 89 of 186 6/8/2015 connector assignments physical and environmental specifications weight: 1.1 lbs (0.50 kg) external power: input voltage: output voltage: 9 to 32 vdc, 6 w typical +5 v ±50.5 v ( up to 100 ma available for antenna bias via rf connector) temperat...

  • Page 90

    C-nav3050 user guide revision 10 page 90 of 186 6/8/2015 iec 6116-2 satellite based augmentation system signals (sbas) publicly broadcast services: sbas (2ass/egnos/msas/gaganc private subscription service: c-nav corrections services (ccs) led display functions input / output data messages gnss acqu...

  • Page 91

    C-nav3050 user guide revision 10 page 91 of 186 6/8/2015 ccs rapid recovery the ccs rapid recovery feature provides a way to more quickly recover from the loss of ccs corrected positioning after loss and recovery of navigation. The receiver starts using these corrections when the link to the navigat...

  • Page 92

    C-nav3050 user guide revision 10 page 92 of 186 6/8/2015 block diagrams figure 38: c-nav3050 base plate dimensions without mounting brackets.

  • Page 93

    C-nav3050 user guide revision 10 page 93 of 186 6/8/2015 figure 39: c-nav3050 base plate dimensions with mounting brackets.

  • Page 94

    C-nav3050 user guide revision 10 page 94 of 186 6/8/2015 appendix b - antenna specifications part numbers standard: nav82-001020-3001lf base: nav82-001021-3001lf airborne: nav82-001022-3001lf frequency (frequency is dependent on software bundle options.) gps l1: 1575.42 mhz, 16 mhz gps l2: 1227.60 m...

  • Page 95

    C-nav3050 user guide revision 10 page 95 of 186 6/8/2015 to 70,000 feet (21,336 m), and is tso-c144 certified. Figure 40 : standard gnss antenna offset figure 41 is a drawing of the label on the standard gnss antenna (p/n nav82-001020-3001lf). The phase center provided is based on ngs test results. ...

  • Page 96

    C-nav3050 user guide revision 10 page 96 of 186 6/8/2015 figure 41: standard (p/n nav82-001020-3001) antenna dimensions.

  • Page 97

    C-nav3050 user guide revision 10 page 97 of 186 6/8/2015 c-nav286 specification sheet part numbers standard: at1675-286 polarization axial ratio radiation coverage rhc (right hand circular) 3 db max @ boresight +5.0 dbic 0 = 0 -2.0 dbic 0 -3.0 dbic 75 -4.0 dbic 80 -5.0 dbic horizon passbands l-band/...

  • Page 98

    C-nav3050 user guide revision 10 page 98 of 186 6/8/2015 c-nav286 drawing figure 42: c-nav286 antenna drawing.

  • Page 99

    C-nav3050 user guide revision 10 page 99 of 186 6/8/2015 ad591 antenna specification part numbers aliad591 antenna type dual patch stacked antenna elements polarization rhcp (+/- 0.5db at zenith) and omnidirectional in azimuth passbands l-band/gps l1/glonass: 1525-1611 mhz gps l2/l5 / glonass: 1164-...

  • Page 100

    C-nav3050 user guide revision 10 page 100 of 186 6/8/2015 ad591 antenna drawing figure 43: ad591 antenna diagram.

  • Page 101

    C-nav3050 user guide revision 10 page 101 of 186 6/8/2015 figure 44: airborne (p/n nav82-001022-3001lf) antenna dimensions.

  • Page 102

    C-nav3050 user guide revision 10 page 102 of 186 6/8/2015 figure 45: base (p/n nav82-001021-3001lf) antenna dimensions.

  • Page 103

    C-nav3050 user guide revision 10 page 103 of 186 6/8/2015 standard & airborne antenna radiation patterns figure 46: standard & airborne antenna radiation pattern optimal antenna performance is realized at elevations greater than 25º. There is a 10 db variation between 0º and 90º elevation (factor 10...

  • Page 104: Service (Ccs)

    C-nav3050 user guide revision 10 page 104 of 186 6/8/2015 appendix c - c-nav corrections service (ccs) description the ccs dual frequency service is a global system for the distribution of sbas corrections giving the user the ability to measure their position anywhere in the world with exceptional r...

  • Page 105

    C-nav3050 user guide revision 10 page 105 of 186 6/8/2015 the key to the accuracy and convenience of the c-nav corrections service (ccs) is the source of sbas corrections. Gnss satellites transmit navigation data on several l-band frequencies 1 . The c-nav reference stations are all equipped with ge...

  • Page 106

    C-nav3050 user guide revision 10 page 106 of 186 6/8/2015 reliability the entire system meets or exceeds a target availability of 99.99%. To achieve this, every part of the infrastructure has a built-in back-up system. All the reference stations are built with duplicate receivers, processors, and co...

  • Page 107

    C-nav3050 user guide revision 10 page 107 of 186 6/8/2015 clock, as well as orbit correctors. It provides a fully independent suite of clock and orbit correction algorithms, and fully independent servers in geographically separated processing centers. Features also include a second independent globa...

  • Page 108

    C-nav3050 user guide revision 10 page 108 of 186 6/8/2015 ccs over-the-air c-nav licensing ccs over-the-air (ota) c-nav licensing is the easiest way to install a c-nav license. The installation of a purchased license is accomplished via radio broadcast. Ccs over-the-air c-nav licensing is especially...

  • Page 109

    C-nav3050 user guide revision 10 page 109 of 186 6/8/2015 vessel info and brief project description (name / number, location) customer info (company name, po / ref. Num. Point of contact) c-nav equipment details (receiver type, firmware version, serial number, p/n’s, etc.) required start / stop date...

  • Page 110

    C-nav3050 user guide revision 10 page 110 of 186 6/8/2015 for special-case scenarios, customers may request to receive the c-nav license via email to manually upload via a c-nav controller solution. The request must be specified in the p.O. The broadcast procedure for over-the-air c-nav corrections ...

  • Page 111

    C-nav3050 user guide revision 10 page 111 of 186 6/8/2015 hardware setup and configuration for information regarding the setup and configuration of ccs oti, please refer to the c-nav3050 ccs oti manual ..

  • Page 112: Messages

    C-nav3050 user guide revision 10 page 112 of 186 6/8/2015 appendix d - nmea data output messages nmeaalm (ascii) this output message reports orbital data (almanac) for the specified gps satellite, and is in compliance with nmea-0183 standards version 3.0. Output format: $gpalm,total,message,prn,week...

  • Page 113

    C-nav3050 user guide revision 10 page 113 of 186 6/8/2015 nmeadtm (ascii) this output stream reports the local geodetic datum and datum offsets from a reference datum. It is in compliance with nmea-0183 standards version 3.0. Default: the nmeadtm message will be scheduled to display automatically be...

  • Page 114

    C-nav3050 user guide revision 10 page 114 of 186 6/8/2015 navigation mode [datum] (user command) local datum reference datum offsets non-diff, sbas default or wgs84 w84 w84 0 gda94 or userdatum 999 w84 offsets from wgs84 c-nav correction services default 999 999 0 wgs84 w84 w84 0 gda94 or userdatum ...

  • Page 115

    C-nav3050 user guide revision 10 page 115 of 186 6/8/2015 nmeagbs (ascii) this output stream reports receiver autonomous integrity monitoring (raim) data. Given that a gnss receiver is tracking enough satellites to perform integrity checks of the positioning quality of the position solution, this se...

  • Page 116

    C-nav3050 user guide revision 10 page 116 of 186 6/8/2015 nmeagfa (ascii) this sentence is used to report the results of the data quality check associated with a position solution. If only a single constellation (gps, glonass, etc.) is used for the reported position solution, the talker id is gp, gl...

  • Page 117

    C-nav3050 user guide revision 10 page 117 of 186 6/8/2015 example: $gngfa,224229.00,0001.7,0002.9,000.43,000.22,014.4868,000.83,0010.0,scc*0c in rtk mode, fields f2, f3, f4 and f5 are zeroes. They are correct values since rtk provides very accurate solutions, beyond the resolution provided by the nm...

  • Page 118

    C-nav3050 user guide revision 10 page 118 of 186 6/8/2015 nmeagga (ascii) these output messages reports position and fix related status information and is in compliance with nmea-0183 standards version 3.0. Output format: $xxgga,time,lat,n/s,lon,e/w,quality,used,hdop,alt,m,separation,m,age ,id*check...

  • Page 119

    C-nav3050 user guide revision 10 page 119 of 186 6/8/2015 earth ellipsoid surface. Note: if no geiod is loaded, geoidal separation is reported as 0. F12 m units for geoidal separation (m = meters) f13 age time since last dgps data was received, in seconds f14 id reference station id number (0000 -10...

  • Page 120

    C-nav3050 user guide revision 10 page 120 of 186 6/8/2015 nmeagll (ascii) this output message reports geographic position (latitude and longitude) information and is in compliance with nmea-0183 standards version 3.0. Output format: $xxgll,lat,n/s,lon,e/w,time,status,mode*checksum field# field name ...

  • Page 121

    C-nav3050 user guide revision 10 page 121 of 186 6/8/2015 nmeagns (ascii) this output message reports geographic position (latitude and longitude) information for single or combined satellite navigation systems and is in compliance with nmea-0183 standards version 3.0. Output format: $xxgns,time,lat...

  • Page 122

    C-nav3050 user guide revision 10 page 122 of 186 6/8/2015 f13 status navigational status indicator s= safe (if the horizontal position error is less than or equal to the selected accuracy level) c= caution (if there is no valid horizontal position error (no raim data)) u= unsafe (if the horizontal p...

  • Page 123

    C-nav3050 user guide revision 10 page 123 of 186 6/8/2015 nmeagrs (ascii) this output stream reports receiver autonomous integrity monitoring (raim) data, reporting range residuals in compliance with nmea-0183 standards version 3.0. Nmea-0183 version 4.1 are given by the addition of fields f9 and f1...

  • Page 124

    C-nav3050 user guide revision 10 page 124 of 186 6/8/2015 nmeagsa (ascii) this output message reports 2d / 3d solution mode, dop values and active satellite information, and is in compliance with nmea-0183 standards version 3.0. Field f7 is added to comply with version 4.1 of the nmea standard. Outp...

  • Page 125

    C-nav3050 user guide revision 10 page 125 of 186 6/8/2015 nmeagst (ascii) this output message reports pseudo-range noise (prn) statistic information, and is in compliance with nmea-0183 standards version 3.0. Output format: $xxgst,time,rms,majoraxis,minoraxis,orientation,lateer,loner,alterr*c hecksu...

  • Page 126

    C-nav3050 user guide revision 10 page 126 of 186 6/8/2015 nmeagsv (ascii) this output message reports data associated with satellites in view, based on almanac data. Data includes prn number, elevation, azimuth, and snr values. Note that one gsv sentence can only provide data for up to 4 satellites,...

  • Page 127

    C-nav3050 user guide revision 10 page 127 of 186 6/8/2015 nmeamla (ascii) this output stream reports orbital data (almanac) for the specified glonass satellite and is in compliance with nmea-0183 standards version 3.0. Output format: $glmla,total,sentence,sid,na,ch,eccentricity,tn,perigee,tmsb,dtn a...

  • Page 128

    C-nav3050 user guide revision 10 page 128 of 186 6/8/2015 nmearmc (ascii) this output message reports minimum recommended gps information, including position, velocity, and time information, and is in compliance with nmea-0183 standards version 3.0. The update of field f12 and the addition of field ...

  • Page 129

    C-nav3050 user guide revision 10 page 129 of 186 6/8/2015 p= precise (nmea v4.1 only) r= rtk solutions (except rtk float) (nmea v4.1 only) f= float (nmea v4.1 only) f13 nav status navigational status indicator (nmea v4.1 only) s= safe. C= caution. U= unsafe. V= not valid f14 checksum table 46: rmc m...

  • Page 130

    C-nav3050 user guide revision 10 page 130 of 186 6/8/2015 nmearre (ascii) this output stream report receiver autonomous integrity monitoring (raim) data, reporting range residual errors. Note that this command is not defined in nmea-0183 standards version 3.0. Output format: $xxrre,count,...,herr,ve...

  • Page 131

    C-nav3050 user guide revision 10 page 131 of 186 6/8/2015 nmeattm (ascii) this output stream is only supported on mbrtk rover and displays baseline information including the baseline distance, bases speed and direction and closest point of approach based on nmea-0183 standards version 4.0. Output fo...

  • Page 132

    C-nav3050 user guide revision 10 page 132 of 186 6/8/2015 example: $gnttm,30,16.75,134.27,t,0.03,34.96,t,15.99,2.63,k,530,t,r,201345.00,a*45 please note: there will be some noise in the base velocity due to the baseline velocity of the rover. This noise will increase if the rover is moving in a non-...

  • Page 133

    C-nav3050 user guide revision 10 page 133 of 186 6/8/2015 nmeavtg (ascii) this output message reports velocity and course over ground information, and is in compliance with nmea-0183 standards version 3.0. Output format: $xxvtg,track,t,track,m,speed,n,speed,k,mode*checksum (as nmea v3.0) field# fiel...

  • Page 134

    C-nav3050 user guide revision 10 page 134 of 186 6/8/2015 nmeazda (ascii) this output message reports date and time information, and is in compliance with nmea-0183 standards version 3.0. Output format: $xxzda,time,day,month,year,offset_hour,offset_min*checksum field# field name description f1 time ...

  • Page 135

    C-nav3050 user guide revision 10 page 135 of 186 6/8/2015 nmeapnctdtm (ascii) this output stream reports local geodetic datum and datum offsets from a reference datum. It is in compliance with nmea-0183 standards version 3.0. The difference between nmeadtm and nmeapnctdtm is the added datum codes fo...

  • Page 136

    C-nav3050 user guide revision 10 page 136 of 186 6/8/2015 table 52: pnctdtm message output for each nav mode please note: there will be some noise in the base velocity due to the baseline velocity of the rover. This noise will increase if the rover is moving in a non-linear path. Navigation mode [da...

  • Page 137

    C-nav3050 user guide revision 10 page 137 of 186 6/8/2015 nmeapnctgga (ascii) this message reports position and fix related status information. It is a c-nav proprietary nmea type message, and it conforms to the header, checksum and electrical characteristics of a standard nmea string, but is not re...

  • Page 138

    C-nav3050 user guide revision 10 page 138 of 186 6/8/2015 earth ellipsoid surface and mean-sea-level (geoid) surface. “-“ = mean-sea-level surface below wgs-84 earth ellipsoid surface. Note: if no geiod is loaded, geoidal separation is reported as 0. F12 m units for geoidal separation (m = meters) f...

  • Page 139

    C-nav3050 user guide revision 10 page 139 of 186 6/8/2015 table 55: signal id system signal id signal channel gps 0 1 2 3 4 5 6 7 8 9-f all signals l1 c/a l1 p(y) l1 m l2 p(y) l2c-m l2c-l l5-i l5-q reserved glonass 0 1 2 3 4 5-f all signals g1 c/a g1 p g2 c/a glonass (m) g2 p reserved.

  • Page 140

    C-nav3050 user guide revision 10 page 140 of 186 6/8/2015 id (yy) gps correction signal 00 non dgps 01 dgps, rtcm type 1 (gps-code); and type 31 (glonass – code) or type 9 (gps – code); and type 34 (glonass partial correction set – code), single freq. And dual freq. 02 waas/egnos, single freq. (gps)...

  • Page 141

    C-nav3050 user guide revision 10 page 141 of 186 6/8/2015 table 56: navigation mode 25 c-nav correction services (ccs), dual freq., adjusted for “tides” (gps) 26 rtk extend active (c-nav correction services filling in for missing rtk epochs) (gps) 33 gnss, single freq., no “tides” 34 gnss, dual freq...

  • Page 142

    C-nav3050 user guide revision 10 page 142 of 186 6/8/2015 nmeapnctgst (acsii) this message satisfies the ukooa compliance requirements by starting with the standard nmea gst message and scaling all error statistics by 1.96, and by adding a value for the f-test of unit variance. Output format: $pnctg...

  • Page 143

    C-nav3050 user guide revision 10 page 143 of 186 6/8/2015 nmeapnctmde (ascii) this output stream reports the marginally detectable error (mde) generated by the receiver as part of the self-monitoring duties performed to support receiver autonomous integrity monitoring (raim). It is a c-nav proprieta...

  • Page 144

    C-nav3050 user guide revision 10 page 144 of 186 6/8/2015 nmeapnctset (ascii) this output message reports c-nav proprietary set (solid earth tides), pt (polar tides) and ol (ocean loading) values. It is a c-nav proprietary nmea type message, and it conforms to the header, checksum and electrical cha...

  • Page 145: Signals

    C-nav3050 user guide revision 10 page 145 of 186 6/8/2015 appendix e - l-band correction signals the c-nav3050 gnss receiver can obtain c-nav corrections service (ccs) corrections from six separate and independent geostationary communication satellites. The satellite-based augmentation system (sbas)...

  • Page 146: Appendix F - Event Input

    C-nav3050 user guide revision 10 page 146 of 186 6/8/2015 appendix f - event input configuration figure 50 details the wiring of the optional event cable assembly (p/n nav94- 310274-3010lf). Refer to section 3 - interfacing (page 50 ) for detailed electrical specifications and details. Table 61 deta...

  • Page 147: Appendix G - Standards

    C-nav3050 user guide revision 10 page 147 of 186 6/8/2015 appendix g - standards standards: bs en 61108 – 2003 bs en 60945: 2002 (inc corr.1:2008) bs en 61162-1: 2011 imo resolution msc.191(79) msc.112(73) a.694(17).

  • Page 148: Agreement

    C-nav3050 user guide revision 10 page 148 of 186 6/8/2015 appendix h - software license agreement software license agreement for c-nav, a division of c&c technologies, inc. C- nav3050™ receiver. Important – read carefully: this software license agreement is a legal contract between you and the licen...

  • Page 149

    C-nav3050 user guide revision 10 page 149 of 186 6/8/2015 instructions supplied in the user manual(s) – will make those features operational. You are responsible for maintaining the confidentiality of all activation licenses and will not disclose them to any third party or permit any third party to ...

  • Page 150

    C-nav3050 user guide revision 10 page 150 of 186 6/8/2015 receiver to the place of purchase for repair or replacement of the non- performing software. As used in this agreement, the "warranty period" is 12 months from the date you take delivery of the receiver. 6. Disclaimer of warranties. You hereb...

  • Page 151

    C-nav3050 user guide revision 10 page 151 of 186 6/8/2015 to you or to any other party for any losses or damages resulting from any claims, lawsuits, demands, or actions arising from or relating to use of the software exceed your total payment for the receiver and for the license of the software. 8 ...

  • Page 152

    C-nav3050 user guide revision 10 page 152 of 186 6/8/2015 12 . Trademark. C- nav3050™ is a trademark of licensor. No right, license, or interest to such trademark is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark. 13 ...

  • Page 153

    C-nav3050 user guide revision 10 page 153 of 186 6/8/2015 then section 6 does not apply, instead, licensor warrants that the software provides the functionalities set forth in the operators manuals (the " agreed upon functionalities ") for the warranty period. As used in this section, "warranty peri...

  • Page 154

    C-nav3050 user guide revision 10 page 154 of 186 6/8/2015 obtained the software and on whose behalf it is used; and, (d) agree to perform the obligations of this agreement. 20. Identification of licensor and notices . The licensor is c-nav, a division of c&c technologies, inc. All notices to licenso...

  • Page 155

    C-nav3050 user guide revision 10 page 155 of 186 6/8/2015 see the end of this section for a special exception to the general public license (gpl). Preamble the licenses for most software are designed to take away your freedom to share and change it. By contrast, the gnu general public license is int...

  • Page 156

    C-nav3050 user guide revision 10 page 156 of 186 6/8/2015 gnu general public license: terms and conditions for copying, distribution and modification 0 . This license applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the te...

  • Page 157

    C-nav3050 user guide revision 10 page 157 of 186 6/8/2015 this license. (exception: if the program itself is interactive but does not normally print such an announcement, your work based on the program is not required to print an announcement.) these requirements apply to the modified work as a whol...

  • Page 158

    C-nav3050 user guide revision 10 page 158 of 186 6/8/2015 with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to ...

  • Page 159

    C-nav3050 user guide revision 10 page 159 of 186 6/8/2015 sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in...

  • Page 160

    C-nav3050 user guide revision 10 page 160 of 186 6/8/2015 program prove defective, you assume the cost of all necessary servicing, repair or correction. 12 . In no event unless required by applicable law or agreed to in writing will any copyright holder, or any other party who may modify and/or redi...

  • Page 161

    C-nav3050 user guide revision 10 page 161 of 186 6/8/2015 gnomovision version 69, copyright (c) year name of author gnomovision comes with absolutely no warranty; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for deta...

  • Page 162

    C-nav3050 user guide revision 10 page 162 of 186 6/8/2015 is accompanied by a written statement that details to the recipient the version of freertos used and an offer by yourself to provide the freertos source code should the recipient request it. Any freertos source code, whether modified or in it...

  • Page 163

    C-nav3050 user guide revision 10 page 163 of 186 6/8/2015 * warranties, including, but not limited to, the implied warranties of * merchantability and fitness for a particular purpose are disclaimed. In no event * shall the author be liable for any direct, indirect, incidental, special, * exemplary,...

  • Page 164

    C-nav3050 user guide revision 10 page 164 of 186 6/8/2015 appendix i - rohs certification rohs (restriction of use of hazardous substances) regulations limit or ban specific substances – lead, cadmium, polybrominated biphenyl (pbb), mercury, hexavalent chromium, and polybrominated diphenyl ether (pb...

  • Page 165

    C-nav3050 user guide revision 10 page 165 of 186 6/8/2015 “o” indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in sj/t11363- 2006 (standard of the electronics industry of the people’s republic of china). “x” i...

  • Page 166: Glossary

    C-nav3050 user guide revision 10 page 166 of 186 6/8/2015 glossary abbreviations 1pps - 1 pulse per second 2drms - twice the distance root mean square a/s - antispoofing apc - antenna phase center ber - bit error rate bps - bits per second bsw - british standard whitworth c/a - coarse/acquisition cc...

  • Page 167

    C-nav3050 user guide revision 10 page 167 of 186 6/8/2015 gis - geographic information system glonass - globalnaya navigatsionnaya sputnikovaya sistema gmt - greenwich mean time gnss - global navigation satellite system gps - global positioning system hdop - horizontal dilution of precision hf - hig...

  • Page 168

    C-nav3050 user guide revision 10 page 168 of 186 6/8/2015 msl - mean sea level nad27 - north american datum 1927 nad83 - north american datum 1983 nasa - national aeronautics and space administration ngs - national geodetic survey noaa - national oceanic and atmospheric administration (u.S.) nmea - ...

  • Page 169

    C-nav3050 user guide revision 10 page 169 of 186 6/8/2015 waas - wide area augmentation system wadgps - wide area differential global positioning system wdop - weighted dilution of precision wgs84 - world geodetic system 1984 definitions 1 pulse per second (1pps) is a precision electronic pulse outp...

  • Page 170

    C-nav3050 user guide revision 10 page 170 of 186 6/8/2015 converted into electrical currents that are decoded by the receiver. Patch or microstrip antennas are most commonly used in gnss. Antenna phase center (apc) is the point in an antenna where the gnss signal from the satellites is received. The...

  • Page 171

    C-nav3050 user guide revision 10 page 171 of 186 6/8/2015 bad packets refer to the number of bad c-nav corrections service (ccs) packets received since the unit was turned on. Bandwidth is a measure of the width of the frequency spectrum of a signal expressed in hertz. Baseline is the resultant thre...

  • Page 172

    C-nav3050 user guide revision 10 page 172 of 186 6/8/2015 c-nav corrections service (ccs) is a set of real-time global orbit and clock corrections for gnss satellites. C-nav equipped receivers are capable of real- time decimeter positioning (see appendix c - c-nav corrections service (ccs) (page 104...

  • Page 173

    C-nav3050 user guide revision 10 page 173 of 186 6/8/2015 coarse acquisition code (c/a or civilian code) is the pseudo-random code generated by gps satellites. It is intended for civilian use and the accuracy of readings using this code can be degraded if selective availability (s/a) is introduced b...

  • Page 174

    C-nav3050 user guide revision 10 page 174 of 186 6/8/2015 datum a reference datum is a known and constant surface, which can be used to describe the location of unknown points. Geodetic datums define the size and shape of the earth and the origin and orientation of the coordinate systems used to map...

  • Page 175

    C-nav3050 user guide revision 10 page 175 of 186 6/8/2015 variations and atmospheric and orbital modeling errors. This technique “differences” the measurement of the carrier beat phase across time, frequency, receivers, satellites, or any combination of these. The most popular differences are single...

  • Page 176

    C-nav3050 user guide revision 10 page 176 of 186 6/8/2015 computed from a single data sample. Gps was originally conceived for dynamic positioning of a single receiver, however, it may be used in a differential mode to increase relative accuracy. Eccentricity is the ratio of the distance from the ce...

  • Page 177

    C-nav3050 user guide revision 10 page 177 of 186 6/8/2015 frequency band is a range of frequencies in a region of the electromagnetic spectrum. Frequency spectrum is the distribution of signal amplitudes as a function of frequency of the constituent signal waves. Geodetic leveling network is a netwo...

  • Page 178

    C-nav3050 user guide revision 10 page 178 of 186 6/8/2015 gps time is a measure of time. Gps time is based on utc, but does not add periodic ‘leap seconds’ to correct for changes in the earth’s period of rotation. As of june 2012 gps time is 16 seconds ahead of utc. Greenwich mean time (gmt) is the ...

  • Page 179

    C-nav3050 user guide revision 10 page 179 of 186 6/8/2015 l-band isthe group of radio frequencies extending from approximately 400 mhz to approximately 1600 mhz. The gps carrier frequencies l1 (1575.4 mhz) and l2 (1227.6 mhz) are in the l-bandrange. L1 carrier frequency is the primary l-band carrier...

  • Page 180

    C-nav3050 user guide revision 10 page 180 of 186 6/8/2015 passes through the earth’s axis of rotation and the 0° meridian and the plane that passes through the axis of rotation and the point of interest. It is often abbreviated as lon. Mean sea level (msl) is a vertical surface that represents sea l...

  • Page 181

    C-nav3050 user guide revision 10 page 181 of 186 6/8/2015 ephemeris and health. This information is used to process the gps signal to obtain user position and velocity. Navstar is the name given to gps satellites, originally manufactured by rockwell international. National marine electronics associa...

  • Page 182

    C-nav3050 user guide revision 10 page 182 of 186 6/8/2015 position is the latitude, longitude, and altitude of a point. An estimate of error is often associated with a position. Position dilution of precision (pdop) is a measure of the magnitude of dilution of position (dop) errors in the x, y, and ...

  • Page 183

    C-nav3050 user guide revision 10 page 183 of 186 6/8/2015 pseudo-random noise (prn) is a sequence of data that appears to be randomly distributed but can be exactly reproduced. Each gnss satellite transmits a unique prn in its signals. Gnss receivers use prns to identify and lock onto satellites and...

  • Page 184

    C-nav3050 user guide revision 10 page 184 of 186 6/8/2015 reference station a reference station collects gnss data for a fixed, known location. Some of the errors in the gnss positions for this location can be applied to positions recorded at the same time by roving receivers which are relatively cl...

  • Page 185

    C-nav3050 user guide revision 10 page 185 of 186 6/8/2015 single difference between receivers is the instantaneous difference in the complete carrier beat phase measurements made at two receivers simultaneous observing the same signal. Single-frequency is a type of receiver that only uses the l1 gps...

  • Page 186

    C-nav3050 user guide revision 10 page 186 of 186 6/8/2015 universal time coordinated (utc) a time standard maintained by the us naval observatory, based on local solar mean time at the greenwich meridian. Gps time is based on utc. User segment is the portion of the gnss system with major components ...