一种空中二次雷达目标单站无源定位技术  

A Passive Positioning Technique of Arial SSR Target

作　　者：崔凯[1] 姜建军[1] 张建峰[1] CUI Kai;JIANG Jian-jun;ZHANG Jian-feng(No. 36 Research Institute of CETC, Jiaxing 314033, Zhejiang, China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《电子信息对抗技术》2018年第6期12-16,21,共6页Electronic Information Warfare Technology

摘　　要：在椭圆-角度定位方法的基础上提出了一种应用于二次雷达(SSR)信号的单站定位技术,利用二次雷达工作原理和特点,首先确定询问台与测向接收平台所处位置之间的几何关系,精确测量SSR脉冲的方向和到达时间,通过匹配方法找到隶属同一工作关系的询问和应答脉冲群,从而得到时间特征并转化为距离信息。根据椭圆-角度混合定位方法,解算出空中目标的位置,得出了信号的几何稀释定位误差(GDOP)解析表达式,仿真分析了不同参数下的GDOP。结果表明该技术具备很好的工程实用性。A passive positioning technique is applied for Second Surveillance Radar(SSR)signal based on ellipse-angle positioning.According to the principle of SSR,firstly the geometric relation between interrogation station and Direct-Finder receiver are determined,combining Direction Of Arrival(DOA)and Time Of Arrival(TOA)of SSR signal measured,the distance between arial target and interrogation station is obtained according to the relationship of interrogation and responder signal through pulse pairing.Finally based on the formula of hybrid ellipseangle positioning and Geometric Dilution Of Precision(GDOP),several results of different parameter are simulated.It is shown that this technique has a good engineering performance.

关 键 词：二次雷达 椭圆-角度混合定位 脉冲匹配 定位误差 测向 

分 类 号：TN958.96[电子电信—信号与信息处理]