一种机载前视雷达杂波距离依赖性补偿方法

针对机载前视阵雷达近程回波距离依赖性严重，直接距离采样估计杂波协方差矩阵会导致地面动目标检测(ground moving target indication, GMTI)性能下降，提出了一种完全基于数据的前视阵雷达处理新方法。该方法利用最小二乘准则对近程的杂波进行变换，然后再进行空时自适应处理(space time adaptive processing, STAP)。该方法不需要知道雷达的先验参数，在存在误差的情况下具有稳健性。基于计算机仿真数据的实验结果表明了方法的有效性。

Method to compensate clutter range dependence for airborne forward looking radar

The clutter has range dependence for forward looking radars in short range gate. If these data are directly used to estimate the clutter covariance matrix, the ground moving target indication (GMTI) performance is likely to descend. To deal with this problem, a new method based on least square is proposed. The method transforms the short range clutter by using a least square method. The method does not need to know the prior parameters of a radar but still has robustness in factual environment with uncertain errors. The results from experiments show the validity of the method.