摘要
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。
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 air-borne radar clutter and improve the clutter rej ection 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 im-prove the clutter rej ection performance of STAP when the antenna elements error exists in the receiving channel in forward-looking airborne radar.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2014年第12期2388-2392,共5页
Systems Engineering and Electronics
基金
国家自然科学基金(61303034)
基本科研业务费(K5051303011)资助课题
