Direction-finding of Low Probability Interception Signals in Jammer

The information of low probability interception (LPI) signals is useful in practice,but LPI signals are often hided or put in jammer,which show more difficulty in direction-finding.This paper exploits the characters of signals and uses spectral correlation theory in direction-finding of LPI signals in jammer.The simulation results show that the combination of array direction-finding and spectral correlation theory can get better results than the method of MUSIC in direction-finding of LPI signals.