Research On Ground Moving Target Indicator Based On Compressed Sensing

This paper studies the methods of ground moving target indication based oncompressed sensing of multichannel interferometric SAR. Traditional SAR-GMTImethods must follow Nyquist sampling theorem, which will bring a great burden on thestorage of data and the transmission unit. In signal processing based on compressedsensing, the number of samples is highly decreased and simultaneously the detectionperformance of the target can be guaranteed, so that the burden of hardware system isrelieved. In this paper, we propose a measurement approach of tri-channel GMTI.Firstly, we conduct a random sampling along the azimuth direction in order to acquirethe echo data of three channels respectively. Then the DPCA method is applied tosuppress the clutter and remove the stationary targets. Finally, we test and verify thepossibility of speed measurement by formula derivation and then discuss in whatconditions can accurate speed measurement be realized. The proposed method is provedby computer simulations and can achieve sound effects.