测绘通报 ›› 2018, Vol. 0 ›› Issue (6): 7-11.doi: 10.13474/j.cnki.11-2246.2018.0167

• 学术研究 • 上一篇    下一篇

多系统融合全球电离层建模研究

王健1,2, 党亚民1,2, 王虎2, 张龙平2, 刘宗强1,2, 韩恒星1,2   

  1. 1. 山东科技大学测绘科学与工程学院, 山东 青岛 266590;
    2. 中国测绘科学研究院, 北京 100830
  • 收稿日期:2018-01-04 修回日期:2018-02-22 出版日期:2018-06-25 发布日期:2018-07-07
  • 作者简介:王健(1992-),男,硕士生,主要研究方向为电离层及GNSS数据处理与分析。E-mail:1126646072@qq.com
  • 基金资助:
    国家自然科学基金(41474011);全球连续监测评估系统项目(CFZX0301040308-06);中国测绘科学研究院基本科研业务费(7771707;7771806)

Research on Multisystem Fusion Global Ionospheric Modeling

WANG Jian1,2, DANG Yamin1,2, WANG Hu2, ZHANG Longping2, LIU Zongqiang1,2, HAN Hengxing1,2   

  1. 1. College of Geomatics, Shandong University of Science and Technology, Qingdao 266590, China;
    2. Chinese Academy of Surveying and Mapping, Beijing 100830, China
  • Received:2018-01-04 Revised:2018-02-22 Online:2018-06-25 Published:2018-07-07

摘要: 近年来,我国BDS的建设和应用为GNSS电离层研究带来了新的机遇和挑战。本文采用中国测绘科学研究院iGMAS分析中心数据,构建了三系统融合全球电离层球谐函数模型,并对结果进行分析。研究表明:除去精度较差的海洋区域,在大陆地区,多系统融合全球电离层建模结果能较精确地表达电离层VTEC;对比三系统差分码偏差DCB的精度统计结果,GPS卫星系统C1P2码偏差均小于1 ns,大部分在0.5 ns以内,精度最高;GLONASS卫星系统C1P2码偏差均小于2 ns,精度比GPS系统略低;BDS卫星系统B1B2码偏差均小于1 ns,精度比GLONASS系统略高,但不如GPS系统稳定,码偏差随年积日变化较大,可能是BDS系统星座结构不完善的原因。

关键词: 电离层, GNSS, 球谐函数, 差分码偏差

Abstract: In recent years,the construction and application of BDS in China have brought new opportunities and challenges for the study of the GNSS ionosphere.Based on the data from iGMAS analysis center of Chinese Academy of Surveying and Mapping,a global system of ionospheric spherical harmonic function is built up by three systems,and the results are analyzed.The research shows that the poor performance of marine areas removed in the mainland,multisystem integration of global ionospheric modeling results can accurately express the ionospheric VTEC;the accuracy of statistical results of code deviation DCB contrast three system,GPS satellite system C1P2 code deviation is less than 1ns,most of the highest accuracy within 0.5 ns,GLONASS satellite;C1P2 code deviation is less than 2 ns,the accuracy is slightly lower than the GPS system;BDS satellite system B1B2 code deviation is less than 1 ns,the precision is slightly higher than the GLONASS system,but GPS has better stability,with the product code deviation of daily variation is large,may cause the constellation structure of the BDS system is not perfect.

Key words: ionosphere, GNSS, spherical harmonics, differential code bias

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