摘要
为了评估北斗单系统(BeiDou satellite navigation system,BDS)及多全球导航卫星系统(global navigation satellite system,GNSS)在极区环境下的导航定位性能,从可见卫星数、位置精度因子、定位精度和高度角变化等多个性能指标对南北极四个测站进行分析。首先介绍了多GNSS的位置精度因子计算模型,然后利用开普勒轨道参数仿真各卫星导航系统数据,详细分析了北斗单系统、北斗双系统以及四系统的性能。仿真结果表明,双系统和四系统能够显著增加可见星数和降低位置精度因子值,从而提高定位精度。四个测站中中山站可见卫星数最多,且各方面性能指标最优,高纬度区域昆仑站性能最差。此外,BDS/GLONASS格洛纳斯组合可以显著增加高仰角卫星,能够改善极区定位性能。
To evaluate the navigation and positioning performance of the BeiDou Single Satellite Navigation System(BDS)and multi-global navigation satellite system(GNSS)in the polar area,the number of visible satellites,position dilution of precision(PDOP)value,positioning accuracy,and elevation angle variation of four stations at the north and south poles were analyzed.Firstly,the PDOP calculation model of multi-GNSS system was introduced,and then the data of satellite navigation system,which was simulated with the Kepler orbit parameters was applied to evaluate the performance of BeiDou uni-,dual-,and quadr-system in detail.The simulation results show that the dual-system and quadr-system can significantly increase the number of visible satellites and decrease the PDOP value,thus improving the positioning accuracy.Among the four stations,the Zhongshan station has the largest number of visible satellites and the best performance,while the Kunlun station,the worst.In addition,the dual-system of BDS/GLONASS combination can significantly increase the high-elevation satellites and improve the performance in polar positioning.
作者
吴有龙
杨忠
陈维娜
姚文进
陈闯
WU You-long;YANG Zhong;CHEN Wei-na;YAO Wen-jin;CHEN Chuang(College of Intelligent Science and Control Engineering,Jingling Institute of Technology,Nanjing 211169,China;School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China;Zhinengdanyao Ministerial Key Laboratory,Nanjing University of Science and Technology,Nanjing 210094,China;School of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,China)
出处
《科学技术与工程》
北大核心
2021年第1期32-39,共8页
Science Technology and Engineering
基金
国家自然科学基金青年科学基金(61803188)
江苏省高等学校自然科学基金面上项目(19KJB510028)
中央高校基本科研业务费专项(30916014101)。
关键词
极区
位置精度因子
高度角
可见星
polar region
position dilution of precision
elevation angle
visible satellites
