导航卫星信号模拟器伪距生成实时仿真研究  

Real-time Simulation of Pseudo-Range Generation of Navigation Satellite Signal Simulator

作　　者：罗益鸿[1] 王威[1] 郗晓宁[2] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073 [2]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《计算机仿真》2009年第7期77-80,共4页Computer Simulation

基　　金：国家863计划资助项目(2007AA12Z307)

摘　　要：高精度伪距数据的实时生成是导航卫星信号模拟器开发需要解决的一项关键技术。在监测接收机测试中,信号模拟器生成伪距数据时必须采用高精度而复杂的卫星轨道和伪距误差项计算模型,但是复杂的计算模型严重影响了伪距数据生成的实时性。针对问题,提出了迭代计算与插值计算相结合的伪距生成方法,并采用方法对监测接收机和普通定位接收机用户进行了伪距数据的实时生成仿真和精度分析。结果表明方法能满足伪距数据生成的实时性和精度要求。The generation of high accuracy real - time pseudo - range data is one of the key problems that need to be solved in the development of navigation satellite signal simulator. In the monitoring receiver test, high accuracy and complex satellite orbit and pseudo - range error models must be used to generate pseudo - range by signal simulator. But the real - time property of pseudo - range generation is badly affected by complex models. In view of this problem, a pseudo - range generation integrated method that combines iterative algorithm with interpolation method was presented, and real - time pseudo - range generate simulation as well as accuracy analysis of monitoring receiver and navigation receiver user were provided. The result indicates that this method can meet the real - time and accuracy requirements of pseudo - range generation.

关 键 词：卫星导航 信号模拟器 伪距 监测接收机 实时仿真 

分 类 号：P228[天文地球—大地测量学与测量工程]