目标散射矩阵测量新方法的性能比较与分析  

Evaluation and Analysis of New Method of Measurement of Target Scattering Matrix

作　　者：黄振宇 赵博[2] 戴幻尧 汪连栋 周学全[3] 

机构地区：[1]电子信息系统复杂电磁环境效应国家重点实验室 [2]中国人民解放军93159部队 [3]国防信息学院

出　　处：《系统仿真学报》2015年第6期1308-1315,共8页Journal of System Simulation

基　　金：国家自然科学基金项目(61301236)

摘　　要：雷达极化信息处理的基础是极化测量,目前现有的目标全极化散射矩阵是通过正交双极化通道分时测量体制或瞬时测量体制得到的,对极化测量信号要求高,测量精度比较高,但系统复杂程度和代价也相对较大。利用单极化天线的空域极化特性对雷达接收回波信号进行处理,无需对雷达进行结构改造而仅进行软件技术更新的情况下,也能够获得目标的全极化散射矩阵。将从理论分析和计算机仿真实验2个方面对这2种极化测量体制进行比较和性能分析,通过仿真验证了新方法的优越性和广阔的研究前景,但也存在一定局限性。The basic theory of radar polarization signal processing is measurement of the target scattering matrix.The current algorithm of measurement of the target scattering matrix is gotten through orthogonal dual polarization channel in time-sharing or simultaneously,which demands orthogonal polarization measurement signals with complex coding.The measuring accuracy is higher.The complexity and the cost of the system are relatively higher.Scattering matrix can also be obtained by making use of the spatial polarization characteristics of the antenna to processing the radar echo without structure reformation of the radar.It only needs to renewal measurement technology.The comparison and performance analysis between the measurement method existed are given by theoretical analysis and simulation experiment.The superiority of the new method is verified which has broad prospects of research & application,although it has some limitation.

关 键 词：目标散射矩阵 极化雷达 极化 瞬时测量 空域极化特性 

分 类 号：TN957.51[电子电信—信号与信息处理]