Impact of multiple-tone jamming on acquisition performance of DSSS receiver

The impact of multiple-tone jamming on acquisition performance of DSSS receiver is studied on the basis of two-dimensional correlation acquisition principle.,which makes use of DSSS receiving system modulated by BPSK and each message code is spread by integral number periods of PN code.The ideal frequency distribution of multiple-tone jamming is presented with the mathematical analysis of power spectrum of PN sequence.The multiple-tone jamming can broaden the interference domain with better performance when the carrier frequency can't be estimated accurately,and the performance of multiple-tone jamming is worse than single-tone jamming when the carrier frequency can be estimated accurately.At last,the simulation results validate the correctness of theory.