基于GPS精密单点定位的低轨卫星几何法定轨  

Kinematic Orbit Determination of Low-Earth Orbiters Based on GPS Precise Point Positioning Technique

作　　者：韩保民[1] 杨元喜[2] 

机构地区：[1]山东理工大学建筑工程学院,山东淄博255049 [2]西安测绘研究所,陕西西安710054

出　　处：《西南交通大学学报》2007年第1期75-79,共5页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(40474001)

摘　　要：为了提高几何法定轨的精度,系统分析了考虑低轨卫星受力情况的几何法定轨原理及数学模型,将动力学平滑结果作为几何法定轨的先验轨道,提出了一种改进的众数投票法,并将其成功地应用于低轨卫星几何法定轨,提高了基于非差观测值的数据预处理质量,避免了低轨卫星轨道出现较多的间隔,从而提高了定轨精度.In order to advance orbiting results obtained using the present kinematic orbit determination method, the principle and mathematic model of kinematic orbit determination based on GPS PPP （precise point positioning） technique considering dynamic information on a low-earth-orbiter （LEO） were analyzed. By using smoothed orbiting result as the priori orbit of an LEO, an improved majority voting method was proposed and successfully used in kinematic orbit determination. With this proposed method, the quality of data pre-processing based on undifferenced observations from an onboard GPS receiver can be improved and big phase breaks causing many gaps in the orbit of an LEO can be avoided efficiently, as a result, orbiting accuracy can be enhanced.

关 键 词：星载GPS 低轨卫星 精密单点定位 改进的众数投票方法 几何法定轨 

分 类 号：P228.4[天文地球—大地测量学与测量工程]