雷达低角测量误差仿真分析及改善方法  

Simulation Analysis and Improvement Method of Low-angle Measurement Error for Radar

作　　者：陆小凯[1] 钱乔龙 吴俭[1] LU Xiao-kai;QIAN Qiao-long;WU Jian(The 723 Institute of CSIC,Yangzhou 225101,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101

出　　处：《舰船电子对抗》2020年第2期26-29,共4页Shipboard Electronic Countermeasure

摘　　要：针对多路径效应引起的雷达低角测量误差,建立了多路径几何模型和角误差计算模型,对低角测量误差进行了仿真分析,并提出一种改善雷达低角测量精度的方法。该方法基于宽带捷变频联合自适应角误差修正,利用宽带捷变频去除镜像信号与直达信号的相关性,根据不同海情、目标高度实时选择误差补偿曲线对角误差进行修正。仿真结果证实了该方法的有效性。Aiming at the low-angle measurement error of radar caused by multipath effect,the multipath geometry model and angle error calculation model are established,and the simulation analysis is performed to the low-angle measurement error.Meanwhile,a method to improve the low-angle measurement accuracy of radar is proposed.The method is based on the adaptive angle error correction combined with wide-band frequency agility,uses wide-band frequency agility to remove the correlation of image signal and direct signal,according to different sea conditions and target heights,selects the error correction curve for the angle error correction in real time.Simulation results confirm the effectiveness of the method.

关 键 词：多路径效应 低角测量 宽带捷变频 角误差修正 

分 类 号：TN953.5[电子电信—信号与信息处理]