quotation:		[Copy]
		[Copy]

This Paper:Browse 4355 Download 2465
双星时差频差无源定位系统定位算法工程指标分析
王勤果,龙宁
0 Fontlarge +\|Default\|Small
(中国西南电子技术研究所，成都 610036)

摘要:

通过计算时差、频差测量精度，以及卫星运动引起的时差、频差变化率，提出双星时差频差无源定位系统的信号最佳采样时间为10～100 ms。进一步推导了工程可实现的定位精度，仿真结果表明双星系统工程可实现的定位精度约为1～3 km。研究和结论对双星定位系统定位精度指标的论证与分解具有借鉴意义。

关键词: 双星定位时差频差工程实现信号采样时间定位精度

DOI：

基金项目:

Engineering Index Analysis of Localization Algorithm for Dual satellite Passive Geolocation Using TDOA and FDOA

WANG Qin-guo,LONG Ning

(Southwest China Institute of Electronic Technology，Chengdu 610036，China)

Abstract:

By computing the mea surement precision of TDOA(Time Difference of Arrival) and FDOA(Frequency Differ ence of Arrival), TDOA and FDOA′s change rate caused by satellite′s moveme n t,this paper puts forward that the best signal sampling time is 10～100 ms in Du alsatellite Passive Geolocation System using TDOA and FDOA. Further more, loc alization p recision of engineering realization is deduced. Simulation results show that loc alization precision is about 1～3 km. The research and conclusion can provide re ference for demonstration and analysis of localization pr ecision index of dualsatellite passive geolocati on system.

Key words: dual satellite geolocation TDOA FDOA engineering realization signal sampling time localization precision