测绘通报 ›› 2018, Vol. 0 ›› Issue (6): 12-16,67.doi: 10.13474/j.cnki.11-2246.2018.0168

• 学术研究 • 上一篇    下一篇

极区北斗卫星数据质量特征分析

左宗, 陈明剑, 李滢, 姚翔   

  1. 信息工程大学, 河南 郑州 450001
  • 收稿日期:2018-01-02 修回日期:2018-02-23 出版日期:2018-06-25 发布日期:2018-07-07
  • 作者简介:左宗(1993-),男,硕士生,主要研究方向为GNSS精密定位技术研究。E-mail:zongzuo1@163.com
  • 基金资助:
    装备预研基金项目(9140A24011314JB52001)

Characteristics Analysis of GNSS Data Quality in Polar Region

ZUO Zong, CHEN Mingjian, LI Ying, YAO Xiang   

  1. Information Engineering University, Zhengzhou 450001, China
  • Received:2018-01-02 Revised:2018-02-23 Online:2018-06-25 Published:2018-07-07

摘要: 为明确极区环境对北斗卫星数据质量和卫星导航定位服务的影响,本文利用极区所有IGS站可用的北斗卫星观测数据和中山站实测数据,结合信噪比、多路径误差和电离层延迟变化率等评价指标,全面分析了北斗卫星导航系统在极区的数据质量特征。结果表明:极地测站的北斗卫星观测数据质量受高度角影响更大;信噪比整体水平相对于低纬测站低,北斗卫星的信噪比水平与GPS相当;多路径效应更加严重,需在数据预处理中予以考虑;极地测站数据受电离层活动的影响大且存在时段差异。

关键词: BDS, 数据质量, 极地, 多路径, 电离层延迟变化率

Abstract: In order to clarify the influence of polar environment on the quality of BeiDou satellite data and satellite navigation and positioning services,all the BeiDou satellite observation data acquired in IGS stations and the observations of Zhongshan station are used to analyze the BDS data quality characteristics in the polar region,combined with SNR,multipath error and ionospheric delay rate.The results show that the data of BDS observations in polar stations are more affected by the elevation;the overall signal-to-noise ratio is lower than that of low latitude stations which is comparable to GPS;the multipath effect is more serious;the data from the polar stations are greatly influenced by the ionospheric activities and are different in different time periods.

Key words: BDS, data quality, polar region, multipath, ionospheric delay changing rate

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