摘要
测向交叉定位精度低,而时差定位需要3个接收站并且对时统的要求较高.为降低系统的复杂度同时保证较高的定位精度,提出利用雷达作为外辐射源进行侦察的测向距离和实现对目标进行定位.首先利用雷达作为外辐射源的测向距离和侦察定位的数学模型,分析了影响定位误差的因素;然后推导出理论定位精度的几何稀释(GDOP);最后进行了仿真实验.仿真结果验证了影响测向距离和定位精度的因素,对实际工程应用中的设计具有指导意义.
Considering low accuracy of bearing-crossing location and the need of three receiving stations using time-difference-of-arrival (TDOA) location and relatively more rigorous synchronization, in order to reduce the system complexity and also guarantee the relatively higher positioning accuracy, this paper puts forward a target location method by direction and distance-sum using radar as external illuminator. Firstly, the paper introduces a mathematical model of direction and distance-sum using radar as external illuminator, and analyzesthe factors affecting location errors. And then it derives out the geometric dilution of precision (GDOP) of theoretical location accuracy. Finally, the paper offers the simulation experiments, and simulation results confirm the factors affecting direction and distance-sum location accuracy, which has provided guidance for the practical engineering application.
作者
胡泽宾
张庆庆
张和发
HU Zebin;ZHANG Qingqing;ZHANG Hefa(No.38 Research Institute, China Electronic Technology Group Corporation, Hefei 230088, China)
出处
《空军预警学院学报》
2017年第1期28-30,35,共4页
Journal of Air Force Early Warning Academy
关键词
测向交叉定位
时差定位
测向距离和联合定位
定位精度
几何稀释
bearing-crossing location
TDOA location
direction and distance-sum location
location accuracy
geometric dilution of precision
