雷达多径假目标分析及抑制  

Radar Multipath False Target Analysis and Suppression

作　　者：唐杰 范家强 Tang Jie;Fan Jiaqiang(Nanjing Institute of Electronic Technology,Nanjing,China)

机构地区：[1]南京电子技术研究所,江苏南京

出　　处：《科学技术创新》2023年第11期208-211,共4页Scientific and Technological Innovation

摘　　要：由于地面反射引起的多路径效应的影响,既会带来一次雷达低角跟踪不稳定问题,同时也是造成二次雷达出现假目标的主要原因。本研究在分析讨论多径反射类型、成因及初步抑制方法的基础上,结合工程实践,提出一种基于反射几何模型的抑制方法,通过阵地数据采集分析,反射体位置计算,建立和更新反射体位置数据库,再利用数据库信息对回波数据判断标记,实现对多径假目标的有效抑制。通过雷达实测数据验证该方法的可行性。The multipath effect caused by ground reflection not only brings the low Angle tracking instability of primary radar,but also causes the false target of secondary radar.In this research,based on the analysis and discussion of multipath reflection types,causes and preliminary suppression methods,combined with the engineering practice,a suppression method based on the reflection geometry model is proposed.Through the position data acquisition and analysis,the reflector position calculation,the reflector position database is established and updated,and the database information is used to judge and mark the echo data,so as to realize the effective suppression of the multipath false targets.The feasibility of this method is verified by the measured data of radar.

关 键 词：二次雷达 多路径 假目标 反射体 

分 类 号：TN957[电子电信—信号与信息处理]