A parameter estimation scheme for multi-component BPSK interferences

BPSK interference is also called the matched spectrum interference, because its wave form and frequency coverage matches that of satellite navigation signal. As efficient wideband interference, it heavily menaces the safety of Global Navigation Satellite System (GNSS) and is taken as an important target of interference monitoring. However, there are hardly any researches on signal separation and parameter estimation of non-cooperative muti-component BPSK interferences. Thus, a parameter estimation scheme for multi-component BPSK interferences based on a modified Phase Lock Loop (PLL) is put forward. Simulations show that the proposed scheme has equal code Bit-Error-Ratio to that of cooperative Successive Interference Cancellation (SIC).