摘要
针对多星频差定位系统,建立了频差定位模型。利用矩阵理论和统计信号处理理论,推导了由于频差、卫星自定位和卫星速度测量误差所产生的定位误差几何稀度(GDOP)公式,对其理论分析和仿真表明:地球约束能显著改善定位精度;频差测量误差和卫星位置速度测量误差对系统性能均有影响,但前者影响更大。
The model was established for the multi-satellite positioning systems based on frequency difference of arrival in this paper.And using matrix theory and statistical signal processing,the formula of GDOP（Geometric dilution of Precision） for passive source localization is derived when considering three types of measurement error as follows： FDOA,satellite position,satellite speed.Simulation result show： ① earth constraints can evidently improve the location precision;②satellite position（primary satellite error10m and relative error between satellites1m） and speed errors（1m/s） have little impact on the location position compared with FDOA errors.
出处
《煤炭技术》
CAS
北大核心
2010年第8期129-130,共2页
Coal Technology
