Interference Impact on BeiDou Signal Reception Performance

The BeiDou satellite receiving signal is interfered, and its receiving performance will be greatly affected, and even the signal will not be captured directly. Based on equivalent carrier-to-noise ratio, a method to evaluate the reception performance of BeiDou signal is presented, the influence of interference on reception performance of BeiDou signal is studied, and the relationship between the relevant evaluation parameters and the equivalent carrier-to-noise ratio and its calculation method is analyzed. Finally, through MATLAB simulation, the relationship between the reception performance of the signal and the equivalent carrier-to-noise ratio and the pre-detection integration time are obtained. Comparison results show that the greater the interference power is, the closer the center frequency of the interference is to the center of the band of the signal, and the smaller the equivalent carrier-to-noise ratio is, the poorer the reception performance of the signal is; under the same interference conditions, increasing the pre-detection integration time of the carrier tracking loop can reduce the influence of interference on the reception performance of the BeiDou signal.