Beidou differential base station is composed of choke antenna, base station equipment and post-differential software. It can realize pseudo-range differential and carrier phase differential of GPS and Beidou B3 frequency points.
The Beidou/GPS differential base station is used to receive satellite signals broadcast by the Beidou satellite system and the GPS satellite system, and realize self-positioning through operations such as capture, tracking, demodulation and solution. At the same time, it outputs and records the original telegrams broadcast by the Beidou and GPS satellite systems and the observation data of the satellite receiver in real time for real-time differential and post-differential processing.
【The main technical parameters】
a) Positioning update rate: 20Hz;
b) Raw data update rate: 1Hz;
c) Single point horizontal position accuracy: ≤10m (1σ);
d) Single point elevation position accuracy: ≤15m (1σ);
e) Horizontal velocity measurement accuracy: ≤0.2m/s (1σ);
f) Elevation speed measurement accuracy: ≤0.2m/s (1σ);
g) Real-time carrier phase differential accuracy: ≤40cm+1ppm (baseline length ≤40km);
h) Real-time pseudo-range differential accuracy: ≤5m (baseline length ≤40km);
i) Post-carrier phase differential accuracy: ≤8cm+1ppm (baseline length ≤40km);
j) Post-pseudorange differential accuracy: ≤5m (baseline length ≤40km)。