Direct Signal Cancellation of GSM Based Passive Radar System

Passive location systems using non-cooperative illuminator obtain unprecedented attention.A passive location method using GSM signal is proposed.Firstly the character of the illuminator GSM is an-alyzed,then direct signal cancellation,as the key skill of this system,is studied.A new method named Expanding Correlation Algorithm(ECA) is proposed to offset the direct signal.Compared with the tradi-tional one,this algorithm is shown to be more effective by the simulation.