Weak signal blind source separation in Passive Radar System with strong interference

In Passive Radar System, obtaining the mixed weak object signal against the super power signal (jamming) is still an challenging task. In this paper, a novel framework based on the Passive Radar System is designed for the weak object signal separation. We first propose an Interference Cancellation algorithm (IC-algorithm) to extract the mixed weak object signal from the strong jamming. Then, an improved FastICA algorithm with K-means cluster is designed to separate each weak signal from the mixed weak object signal. We verify the proposed method based on several simulations. The experimental results demonstrate the effectiveness of the proposed method.