C-Nav 2050M User Manual - page 156
C-Nav2050 User Guide
both carriers (L1 and L2) of the satellite signal. The
stream of data is designed to inform the user about the
health and position of the satellite. The satellite
message can be decoded by the receiver and u
positioning in real time.
Selective Availab
sed for
ility (S/A) is the deliberate
e
y as
mplete carrier beat
here is no compensation for
t, jam, or demodulate making
values
mean. The larger the standard
deviation is, the more spread out the values are from
degradation of the GPS signal by encrypting the P-cod
and dithering the satellite clock. When the US
Department of Defense uses S/A, the signal contains
errors, which can cause positions to be inaccurate b
much as 100 meters.
Signal-to-Noise Ratio (SNR) is a measure of a
satellite’s signal strength.
Single Difference between receivers is the
instantaneous difference in the co
phase measurements made at two receivers
simultaneous observing the same signal.
Single-frequency is a type of receiver that only uses
the L1 GPS signal. T
ionospheric effects. The C-Nav1010 is a single
frequency receiver.
Space Segment is the portion of the GPS system with
major components in space (e.g., satellites).
Space Vehicle (SV) a GPS satellite.
Spread Spectrum Radio (SSR) is a radio that uses
wide band, noise like (pseudo-noise) signals that are
hard to detect, intercep
any data transmitted secure. Because spread spectrum
signals are so wide, they can be transmitted at much
lower spectral power density (Watts per Hertz), than
narrow band signals.
Standard Deviation is a measure of how widely
are dispersed from the
G-24