极地研究

极地研究 ›› 2015, Vol. 27 ›› Issue (1): 91-97.DOI: 10.13679/j.jdyj.2015.1.091

• 研究论文 • 上一篇    下一篇

北斗系统在远洋及南极地区的定位性能分析

杜玉军1,2 王泽民2  安家春2  谢苏锐2   

  1. 1武汉大学测绘学院, 湖北 武汉 430079； 2武汉大学中国南极测绘研究中心, 湖北 武汉 430079
  • 收稿日期:2014-02-13 修回日期:2014-04-29 出版日期:2015-03-30 发布日期:2015-03-30
  • 通讯作者: 王泽民
  • 基金资助:

    国家自然科学基金;863计划重大项目;国家海洋局极地专项

POSITIONING ANALYSIS OF BEIDOU NAVIGATION SATELLITE SYSTEM OVER OCEAN AND ANTARCTIC REGIONS

Du Yujun1,2, Wang Zemin2, An Jiachun2, Xie Surui2   

  1.  
    1School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
    2Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China
  • Received:2014-02-13 Revised:2014-04-29 Online:2015-03-30 Published:2015-03-30
  • Contact: Ze-Min WANG

PDF (PC)

1859

被引次数

2

摘要： 利用北斗/GPS双系统四频率接收机, 于2011年10月至2012年4月采集了中国第28次南极考察沿线的北斗和GPS实测数据, 跨度北至中国天津, 南至南极内陆昆仑站。从C/A码伪距的信噪比和多路径、可见卫星数、PDOP值、标准定位的精度等方面对比分析了北斗和GPS系统在航线上不同区域, 尤其是在远洋及南极地区不同运动状态下的定位效果。结果表明现阶段的北斗系统信号质量总体上与GPS相当；在45°以内的中低纬度地区, 动态定位精度与GPS相当, 水平和高程方向分别可达10 m和20 m左右, 而静态定位水平方向精度为米级, 与GPS相当, 高程方向10 m左右, 较GPS略差；在中高纬地区, 由于可见卫星数较少、卫星分布较差, 定位精度较差或无法定位。

关键词: 北斗卫星导航系统, 信号质量, 定位分析, 标准定位, 南极地区

Abstract: Using the BeiDou/GPS dual-system four-frequency receiver, BeiDou and GPS data were collected from Tianjin in China to Kunlun Station in Antarctica, along the route of the 28th Chinese National Antarctic Research Expedition. Based on the signal-to-noise ratio and multipath of the C/A code (Coarse/Acquisition code), visible satellites, PDOP (Position Dilution of Precision), and single-frequency point positioning using the C/A code, the navigational and positioning features of BeiDou and GPS were analyzed during different parts of the voyage, especially in the ocean and Antarctic regions, under different movement modes. Results showed that the signal quality of BeiDou is generally as good as that of GPS. At 45°, the precision of BeiDou kinematic positioning is consistent with GPS, i.e., 10 and 20 m in the horizontal and vertical directions, respectively. The precision of static positioning reaches several meters in the horizontal direction, which is comparable with GPS, and about 10 m in the vertical direction, which is worse than GPS. In mid- and high latitudes, because of the lack of visible satellites, positioning accuracy is poor and even positioning failed.

Key words: BeiDou Navigation Satellite System, signal quality, positioning analysis, standard positioning, Antarctic region