A Target Detection Method of Distributed Passive Radar without Direct-Path Signal

At present, there are many technical methods in the field of target detection, but detection greatly affected by direct-path signals and need support such as extracting pure signals, so they cannot be used under condition without-direct-path signals. In this paper, a distributed method is studied system. case achieved generalized likelihood ratio test (GLRT). same time, input echo time synchronization, impact delay should eliminated. However, traditional estimation realized through coherent processing between echoes, which requires high signal-to-noise (SNR). Therefore, proposed paper. Finally, experimental results show that accuracy GLRT improved, also improved Moreover, improved.