Maritime Moving Target Detection With Space-based Passive Radar Based on Multi-frame Modified Wigner-Ville Distribution

摘要

This study focuses on maritime moving target detection with space-based passive radar. It is hard to detect maritime moving target due to the low radar cross section (RCS) and low target's energy. Particularly, when target moves far away from the receiver, it is normally submerged by strong noise. To solve the problem, a maritime moving target detection method based on multi-frame modified wigner-ville distribution (M-WVD) is proposed. Keystone transform is first applied to concentrate the energy of moving target into one range cell. For further energy accumulation, M- WVD based multiple frames method and non-coherent integration technique is used. Simulation data are provided to demonstrate the effectiveness of proposed method.