BDS-3 B2 Frequency Distortion Signal Generation

This paper focuses on the generation of distorted signals on the BDS-3 B2 frequency. Firstly, the 2OS model of traditional BPSK signals is introduced, and the 2OS anomaly model suitable for modern GNSS signals and its general form are given, providing a methodological support for generating different distorted signals. Based on this, eight types of digital distortion are proposed. Since analog distortion is caused by the failure of the simulator device on the satellite signal generation equipment, a method of implementing analog distortion using filters is proposed. The filters used are ideal bandpass filters, Butterworth low-pass filters, and FIR filters, and their differences are compared.