摘要
为了提高卫星定位系统的容错能力和鲁棒性,应用聚类方法提出了一种适用于多卫星的无源定位算法。依据三站时差定位原理,将每3颗卫星编成一组,用每组中的卫星分别对地面目标进行三站时差定位;再利用聚类方法融合估计目标的位置。仿真结果表明,此算法定位精度及稳定性优于传统的三站时差定位法和最小二乘法,可减少信息的不确定性,有助于提高系统的定位效果。
In order to improve the satellite passive location algorithm is presented for positioning system fault tolerance and robustness, a multi-satellite. According to the three-station TDOA location principle, three satellites are put into a group, and three-station TDOA location method is used for ground target with the satellites from each group, and then clustering method is used for fusion estimation of target position. The simulation results show that the proposed algorithm can provide better positioning the target and reduce the uncertainty of information, so the preci- sion and stability of this algorithm are higher than those of traditional three-station TDOA loca- tion method and least squares method.
出处
《航天器工程》
北大核心
2015年第2期140-143,共4页
Spacecraft Engineering
基金
山东航天基金资助项目(2013JJ006)
关键词
多卫星
无源定位
聚类分析
时差定位
multi satellite
passive location
clustering analysis
TDOA location
