Impact of LEO for BDS signal and Successive Interference Cancellation algorithm
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.
LEO navigation augmentationBDSSICquantization effect
万方数据
维普
