Abstract:

The detection performance of the ground slow extended target will drop for multichannel airborne synthetic aperture radar (SAR) in the case of the limited aperture, a new detection and radial velocity estimation method of the ground slow extended moving target is presented based on tensor product (TP).Firstly, TP operation is used for multi channel data in the SAR image domain.Secondly, the modified signal fitting method is used for the TP data of the extended target to detect the slow moving target and estimate the radical velocity, which can effectively avoid the problem of performance degradation for the traditional adaptive matched filter under the condition of the limited azimuth aperture. The simulation results indicate that the proposed method can significantly improve the moving target detection probability in the low velocity and has high estimation precision of radial velocity.