ZHAO Lin, ZHAO Hong-bin, YAN Chao. Study on tracking loops of INS-aided GPS in complex environment[J]. 2011, 30(10): 22-25. DOI: 10.13873/j.1000-97872011.10.003.
In order to realize ultra-tight INS-GPS integration receiver tracking high dynamic and weak GPS signal
the architecture of the ultra-tight INS-GPS integration system is discussed.According to the relation between noise and bandwidth of carrier wave loop
a specific realization scheme for carrier wave of INS-aided GPS receiver and code tracking loop is studied and designed.The overall loop is simulated.The computer test results validate that the carrier wave and bandwidth of code loops can be down to 2
0.03 Hz.When the carrier to noise ratio is 45 dB/Hz;when the bandwidth are above or equal to 20
0.5 Hz
the loops can effectively track the weak signal of 30 dB /Hz in high dynamic scene of acceleration 5gn and jerk ±20 gn/s.