摘要
针对空间多站对运动辐射源的无源定位和测速问题,提出基于脉冲串信号时差及其变化率的定位测速方法。在WGS-84地球模型中空间三站和高程约束条件下,采用“两步法”实现目标定位和测速处理算法,并在典型参数测量误差条件下开展定位和测速性能仿真分析。分析结果表明,时差变化率测量误差是影响测速精度的主要因素。
To estimate location and velocity of moving target in multiple-observer systems,a method by means of time difference of arrival(TDOA)and time difference rate of change measurements is proposed.Considering the known emitter attitude and WGS-84 earth sphere model,a two-step method is used to solve the problem of emitter localization and velocity estimation.Simulation results show that the measurement error of time difference rate of change is the main factor affecting the velocity estimation accuracy.
作者
徐海源
苏成晓
汪华兴
XU Haiyuan;SU Chengxiao;WANG Huaxing(Beijing Institute of Remote Sensing Information,Beijing 100011,China)
出处
《电子信息对抗技术》
北大核心
2022年第4期53-57,共5页
Electronic Information Warfare Technology
关键词
无源定位
测速
时差
时差变化率
passive location
velocity measurement
time difference of arrival
time difference rate of change
