机载前视阵雷达阵元误差稳健的空时插值补偿方法

空时插值方法通过对地面杂波空时导向矢量进行插值变换,能够有效地降低机载前视阵雷达地面杂波的距离依赖性,改善空时自适应处理器的杂波抑制性能。然而,当机载雷达接收通道存在阵元误差时,该方法对接收的数据处理失效。针对该问题,提出一种稳健的空时插值方法,该方法在杂波空时导向矢量周围选取约束导向矢量,然后进行插值变换,补偿地杂波距离依赖性。仿真结果表明,当机载雷达接收通道存在阵元误差时,该方法能够有效地降低接收的地杂波数据的距离依赖性,提高空时自适应处理器的杂波抑制性能。

Forward-looking airborne radar antenna error robust space-time interpolation compensation method

Space time interpolation method implements interpolation transformation on the space time stee ring vectors of the clutter. It can effectively mitigate the range dependence problem of the forward looking airborne radar clutter and improve the clutter rejection performance of the space time adaptive processing (STAP). However, it annuls to process the received clutter data when the antenna element error exists. Aiming at this problem, a robust space time interpolation method is proposed. The proposed method selects calibration stee ring vectors around the space time steering vector of the ground clutter, then implements the interpolation transformation, and compensates the clutter with the range dependence problem. The simulation results show that the proposed method can effectively mitigate the range dependence problem existing in the clutter and improve the clutter rejection performance of STAP when the antenna elements error exists in the receiving channel in forward looking airborne radar.