基于DEM数据机载气象雷达地杂波抑制方法  

Ground clutter suppression in airborne weather radar base on DEM

作　　者：李天尧 李京华[1] 司君国 

机构地区：[1]西北工业大学电子信息学院,陕西西安710114

出　　处：《电子设计工程》2014年第3期14-17,20,共5页Electronic Design Engineering

摘　　要：针对机载气象雷达工作于气象模式时地杂波的抑制问题,应用基于地形可视化的方法在时域对地杂波进行抑制的方法。首先分析机载气象雷达下视时气象目标和地杂波的分布特点,然后根据DEM(Digital Elevation Model)表达地形的特点,利用增量法对地形进行可视化判断。对于气象雷达扫描区域内的可视化点判断其所在的距离单元。将这些贡献地杂波的单元予以剔除。通过仿真实验验证了该方法的有效性。The ground clutter suppression of airborne weather radar in weather pattern,Time domain method of ground clutter suppression based on terrain visualization is applied.First analysis the targets and ground clutter characteristics of distribution when airborne weather radar look-down,then according to the terrain features expressioned by DEM data,visualization judging by incremental method.Judging the range cell for the visual points of weather radar scan area.Take the clutter contribution unit to eliminate.The simulation results verified the effectiveness of this method.

关 键 词：机载气象雷达 DEM数据 地杂波抑制 增量法 地形可视化判断 

分 类 号：TN91[电子电信—通信与信息系统]