北斗三号在极区导航定位性能的研究  

Research on navigation and positioning performance of the BDS-3 system in the polar region

作　　者：韩宇 刘国林[1] 杨世寨 陶秋香[1] 王凤云 郭在洁 HAN Yu;LIU Guolin;YANG Shizhai;TAO Qiuxiang;WANG Fengyun;GUO Zaijie(College of Geomatics,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;Yantai Weizheng Real Estate Appraisal Co.,Ltd.,Yantai,Shandong 264003,China)

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266590 [2]烟台卫正房地产估价有限公司,山东烟台264003

出　　处：《测绘科学》2021年第5期25-32,共8页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41774002,41404003,41876202);山东省自然科学基金项目(ZR2017MD020);研究生科技创新项目(SDKDYC190207)。

摘　　要：针对GPS导航系统在极区范围内导航定位困难的问题,提出了一种采用创新型星座设计的北斗三号(BDS-3)系统对极区进行导航定位的新方法。采用轨道模拟的方式对BDS-3卫星模型解算,通过计算极区卫星可见性、高度角以及精度因子等主要导航性能指标,对极区内定位性能指标的单点统计以及均值分布统计情况与GPS导航系统进行对比。随着截止高度角的增大,极区东半球部分BDS-3的可观测到的卫星数量比GPS更多;所有极区东半球以及部分极区西半球区域的各类DOP值明显低于GPS。因此,创新型星座设计的BDS-3在高对流层延迟下比GPS更有定位优势,为极区导航定位提供了新的选择。According to the difficulty of GPS navigation system’s navigation and positioning in the polar region,a new method for navigation and positioning in the polar region using the BDS-3 system with an innovative constellation is proposed.Calculate the BDS-3 satellite model by orbital simulation.Comparing the single-point statistics of positioning performance indicators and the distribution statistics of the mean value in the polar regions with the GPS navigation system by calculating the main navigation performance indicators such as the visibility of the polar satellites,the height angle and the Dilution of Precision shows that with the increase of the height angle,the number of observable satellites of BDS-3 in the eastern hemisphere of polar regions is more than that of GPS.The DOPs of all the eastern hemisphere in polar regions and part of the polar regions in the western hemisphere are significantly lower than GPS.Therefore,the BDS-3 with innovative constellation design has more advantages than GPS under high tropospheric delay,provided a new choice for polar region navigation and positioning.

关 键 词：北斗三号 极区导航定位 卫星可见性 卫星高度角 精度因子 

分 类 号：P228[天文地球—大地测量学与测量工程]