【摘要】 提出了一种对图像配准误差稳健的多通道合成孔径雷达地面动目标检测定位方法。该方法根据图像配准误差的方向确定观测矢量,计算特征系数矢量,利用动目标的空域导向矢量和特征系数矢量构造特征导向矢量,然后利用自适应波束形成技术进行杂波抑制的同时估计动目标的运动速度,最后对目标重新定位。该方法能够在图像配准误差较大的情况下获得满意的动目标检测性能和较高的测速定位精度。仿真结果验证了方法的有效性。更多还原

【Abstract】 A novel approach to ground moving target indication and location is proposed for multi-channel SAR systems in the presence of coregistration error.In the proposed approach,the eigen coefficient vector and eigen steering vector are defined,the adaptive beamforming approach is used to clutter rejection,and the velocity of moving target can be determined simultaneously,the moving target can be relocalized subsequently.This method has a good robustness to image coregistration error,and can provide accurate estimate of ground moving target radial velocity.The validity and superiority of this method are verified by the simulated data.更多还原