现阶段北斗卫星导航系统可用性分析  

Usability Analysis of Beidou Satellite Navigation System at the Present Stage

作　　者：郁聪冲[1,2] 边少锋[1,2] 

机构地区：[1]海军工程大学导航工程系,湖北武汉430033 [2]海岛(礁)测绘技术国家测绘局重点实验室,山东青岛266510

出　　处：《海洋测绘》2012年第5期74-76,共3页Hydrographic Surveying and Charting

基　　金：973计划项目(2012CB719902);国家自然科学基金项目(41071295;40904018);海岛(礁)测绘技术国家测绘地理信息局重点实验室项目(2010B04);水下测控技术重点实验室延伸性发展基金项目(YS0C261102)

摘　　要：我国自主研发的北斗卫星导航系统目前已发射9颗卫星,其中投入使用的3颗GEO和3颗IGSO在亚太地区组成了一个"3+3"的星座。研究系统可用性,对北斗卫星导航系统后期建设和改进具有重要意义。通过STK和mathematica对该星座的DOP值和可见星数进行了仿真分析。仿真结果表明,现阶段"3GEO+3IGSO"星座在服务区域内可见性和定位精度较好,具有良好的可用性。Beidou Satellite Navigation System,which is run by our country herself,has already launched 9 satellites.With 3 GEOs and 3 IGSOs,a ‘3＋3’ constellation has been formed in the Asia Pacific region.The research on the system ability has a profound impact on the further construction and improvement of the Beidou Satellite Navigation System.In this paper,a simulate analysis of DOP and the visible satellites of the constellation have been made through STK and mathematica.As is shown from the simulate analysis,in the ‘3GEO＋3IGSO’ constellation serice area,the visibility is good and the positioning is quite accurate,which make it clear that the ‘3GEO＋3IGSO’ constellation has a high level of usability.

关 键 词：北斗 DOP 可见性 仿真分析 

分 类 号：P228.4[天文地球—大地测量学与测量工程]