外辐射源雷达与多站时差定位雷达数据融合定位技术研究  

Research on the Data Fusion and Location Technology of External Illuminator Radar and Multi-Sites TDOA Radar

作　　者：徐华 沙虹伟 XU Hua;SHA Hongwei(Nanjing Glarun Defense System Co.,Ltd.,Nanjing Jiangsu 210039,China;Nanjing WeiNeng Power Equipment Co.,Ltd.,Nanjing Jiangsu 211102,China)

机构地区：[1]南京国睿防务系统有限公司,江苏南京210039 [2]南京维能动力设备有限公司,江苏南京211102

出　　处：《电子器件》2024年第5期1210-1214,共5页Chinese Journal of Electron Devices

摘　　要：在各种无源雷达系统中,外辐射源雷达具有较高距离测量精度但方位角测量精度较差,而多站时差定位雷达则恰恰相反,其具有较高的方位角测量精度而测距精度则较差。因此,将外辐射源雷达测量数据与时差定位雷达测量数据进行联合定位、融合处理,必可以取长补短,较大地提高外辐射源雷达的定位精度。在外辐射源雷达和多站时差定位雷达定位原理的基础上,建立了两者联合定位的模型;为解决两种雷达目标测量方程非线性的问题,首先采用扩展卡尔曼滤波(EKF)对两种雷达各自的定位结果进行非线性滤波,而后再对滤波后的目标位置估值进行融合定位处理。仿真结果表明,将外辐射源雷达联合多站时差定位雷达进行联合定位、融合处理后的目标定位精度得到了较大提高。In various passive radar system,external illuminator radar has high distance measurement accuracy but poor azimuth measurement accuracy,and multiple station time difference of arrival(TDOA)radar is just the opposite,it has a higher azimuth measurement accuracy while ranging accuracy is poor,so the joint positioning and fusion processing of the external illuminator radar measurement data and TDOA radar measurement data will complement each other,greatly improve the location accuracy of external illuminators radar.The joint location model based on the location principle of external illuminator and multi-station TDOA radar is established.In order to solve the nonlinear problem of measurement equation is solved,extended Kalman filter(EKF)is first used to filter location results of the two kinds of radar,then the result is made use of to do fusion processing.The simulation results show that by use of TDOA radar joint location,the accuracy of the external illuminator radar is greatly improved.

关 键 词：联合定位 外辐射源 时差定位 

分 类 号：TN959.7[电子电信—信号与信息处理]