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针对机载多输入多输出(MIMO)雷达杂波分布呈现空时耦合特性,提出一种空时自适应杂波对消器。利用机载MIMO雷达的脉冲回波数据,构造杂波对消器的系数矩阵。通过空时自适应杂波对消器的预处理,可以有效地抑制杂波,并通过与常规空时处理算法的级联,最终可以有效提高动目标的检测性能。实现了由传统地基雷达杂波对消器向机载运动平台的推广。仿真结果表明,这种自适应杂波对消器不仅适用于正侧视雷达,对于非正侧视雷达也同样适用。
Aiming at the space-time coupling characteristic of clutter distribution of airborne multiple input multiple output (MIMO) radar, a space-time adaptive clutter canceller is proposed. Using the pulse echo data of airborne MIMO radar, the coefficient matrix of clutter canceller is constructed. Through the space-time adaptive clutter canceller pretreatment, it can effectively suppress the clutter, and finally can effectively improve the detection performance of the moving target by concatenating with the conventional space-time processing algorithm. The popularization of the traditional ground-based radar clutter canceller to airborne platform is realized. The simulation results show that this adaptive clutter canceller is not only suitable for the positive side-looking radar but also for the non-side-looking radar.