In order to evaluate the cross-correlation interference brought by the Low Earth Orbit(LEO)navigation augmentation to BeiDou navigation satellite system(BDS)signal receiving,simulation results are present to indicate the relationship between the optimal carrier-to-noise ratio loss and LEO power enhancement under different quantization bit-width.In order to mitigate the interference caused by LEO signal,an acquisition and tracking architecture is proposed based on the Successive Interference Cancellation(SIC)algorithm,and the LEO signal regeneration and amplitude estimation methods are given.The carrier-to-noise ratio loss of received BDS signal before and after SIC under different LEO signal power and different quantization bits are simulated.The results demonstrate that the carrier-to-noise ratio of received BDS signal reverts to the ideal value after SIC.
关键词
低轨增强/北斗/干扰消除/量化效应
Key words
LEO navigation augmentation/BDS/SIC/quantization effect
维普
万方数据