海面背景下弱目标RCS估计及特性分析  

RCS estimation and characteristic analysis of weak target under sea background

作　　者：黎鑫[1,2] 夏晓云 张玉石 水鹏朗[2] LI Xin;XIA Xiaoyun;ZHANG Yushi;SHUI Penglang(National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao 266107,China;School of Electronic Engineering,Xidian University,Xi’an 710071,China)

机构地区：[1]中国电波传播研究所电波环境特性及模化技术重点实验室,山东青岛266107 [2]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《系统工程与电子技术》2023年第2期424-430,共7页Systems Engineering and Electronics

摘　　要：雷达截面积(radar cross section,RCS)可以为武器装备设计提供支撑。因此,许多国家都建立了标准测试场,可以满足大多数目标RCS测量的需要。对于海面背景下的非合作弱目标而言,只能依赖实际测试来获取目标RCS,但有时会面临多径干扰和信号弱的问题。针对该问题,在海上外定标和目标信杂比改善基础上,提出了一种目标RCS估计方法。设计并开展了海上目标RCS测量试验,并对测试数据进行了分析,验证了新方法的有效性,同时给出了弱目标RCS起伏特性的定性描述。The radar cross section(RCS)can provide a support for the design of weapons.Therefore,standard test sites have been established by many countries for the needs of most target RCS measurements.In terms of the non-cooperative weak target in a sea background,it can only rely on actual tests to obtain the target RCS for the problems of multipath interference and weak signal.In response to the current problem,a target RCS estimation method is proposed based on the offshore external calibration and the signal to clutter ratio improvement of the target.Meanwhile,an RCS experiment is designed and carried out on the sea surface.From the analysis of the measured RCS data,the results verify the effectiveness of the new method.Moreover,a qualitative description on the fluctuation characteristics of weak target RCS based on the coherent accumulation gain is given.

关 键 词：雷达截面积 海面背景 弱目标 外定标 

分 类 号：TN957.51[电子电信—信号与信息处理]