中文摘要：

此前角闪烁特性的研究对象多为偶极子或自由空间中的典型目标，而海、地粗糙面环境中雷达目标角闪烁特性研究的需求更为迫切。采用矩量法与矩阵Uv分解相结合（method of moments with theuv，MOM-UV）的快速计算方法，仿真求得PM谱粗糙面及其上方二维目标的各成分感应电流。再利用相位梯度法得到复合散射角闪烁线偏差的精确计算结果，并进一步分析各成分感应电流对角闪烁的贡献，探究耦合对于目标角闪烁特性的影响。

英文摘要：

Previous study on angular glint mostly focuses on dipoles or canonical targets in free space. How- ever, the angular glint characteristic of radar targets over a rough surface background such as sea or earth is of more practical interest, and this will be studied in ：this paper. By employing the method of moments with the UV matrix decomposition technique （MOM-UV）, the induced surface currents on the targets and the rough surface are obtained. Subsequently, the angular.glint error is calculated precisely by using the phase gradient method. Moreover, the angular glint error contributions from different current components are compared and studied, which reveals the effects of the coupling on the angular glint error.