北斗全球导航卫星的运动学解算方法研究  

Research on Kinematics Parameters Calculation Algorithms of Compass Global Navigation Satellite

作　　者：张卫柱[1,2] 严薇 孙亮[1,2,4] 徐道柱 

机构地区：[1]地理信息工程国家重点实验室 [2]西安测绘研究所 [3]61363部队 [4]93995部队

出　　处：《测绘与空间地理信息》2014年第8期50-52,56,共4页Geomatics & Spatial Information Technology

基　　金：地理信息工程国家重点实验室基金项目(SKLGIE2013-M-4-4)资助

摘　　要：在GNSS中,获取各个可见卫星的位置和速度是卫星导航接收机实现定位、测速和定时的必要条件。介绍北斗全球导航卫星的星历数据参数,依据卫星星历参数,给出了卫星空间位置、运行速度和加速度的数学表达式;研究基于轨道插值的卫星状态估计方法,利用分段三次埃尔米特插值计算卫星位置与速度;采用Matlab软件编制星历参数法与插值法的解算软件,并通过实验仿真验证了两种方法的可行性。结果表明,插值法得到的卫星位置误差可满足导航定位需求,在处理数据量大的情况下,插值法提高了计算效率。In GNSS （ Global Navigation Satellite System ） , the obtaining of visible satellites′position and velocity is necessary condition to achieve positioning , timing and velocity by Satellite navigation receivers .Ephemeris data expression of Compass is introduced .The Mathematical expression of the satellite position , running speed and acceleration is given according as satellite Ephemeris .The state estimate of satellite is researched based on orbit interpolation , the position and velocity of satellite is computed by Amy Stewart interpo-lation algorithm .Corresponding Calculation software of Ephemeris data expression and interpolation algorithm is developed , digital simulation proves the feasibility of two algorithms , the results show that the error of satellite position can satisfy the requirement of nav-igation and position using interpolation algorithm , in the case of vast data processing , corresponding computation efficiency is en-hanced comparing Ephemeris data expression .

关 键 词：北斗全球导航卫星 运动学 星历数据 埃尔米特插值算法 

分 类 号：P228[天文地球—大地测量学与测量工程]