| 联合BDS/GPS的北斗广域差分实时电离层延迟格网改正方法研究 |
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| 引用本文： | 房成贺,陈俊平,兰孝奇,张磊.联合BDS/GPS的北斗广域差分实时电离层延迟格网改正方法研究[J].大地测量与地球动力学,2019,39(2):169-177. |
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| 作者姓名： | 房成贺 陈俊平 兰孝奇 张磊 |
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| 作者单位： | 中国航天电子技术研究院卫星导航系统工程中心,北京市,100094;中国卫星导航系统管理办公室测试评估研究中心,北京市,100094;中国科学院上海天文台,上海市南丹路80号,200030;河海大学地球科学与工程学院,南京市西康路1号,211100;南京高等职业技术学校,南京市黄山路58号,210019 |
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| 摘 要： | 研究并实现中国区域北斗广域差分实时电离层延迟格网改正算法,针对北斗单系统实时建立电离层延迟格网的不足,提出联合BDS/GPS的北斗广域差分实时电离层延迟改正方法。比较BDS、GPS以及BDS/GPS观测的实时电离层延迟格网,并利用北斗单频单点伪距定位进行精度验证。结果表明,在有效格网点覆盖充足的地区,BDS与GPS实时电离层延迟格网定位效果相当;而联合BDS/GPS观测的实时电离层延迟格网极大提高了偏远地区的单频定位精度与可定位历元数,也使原本单系统格网覆盖充足的地区定位效果得到进一步增强和稳定。
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| 关 键 词： | BDS/GPS 实时 广域差分 电离层延迟 格网改正 |
Research on Beidou Wide Area Real-Time Differential Ionospheric Delay Grid Correction Based on BDS/GPS Observations |
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| FANG Chenghe,CHEN Junping,LAN Xiaoqi,ZHANG Lei.Research on Beidou Wide Area Real-Time Differential Ionospheric Delay Grid Correction Based on BDS/GPS Observations[J].Journal of Geodesy and Geodynamics,2019,39(2):169-177. |
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| Authors: | FANG Chenghe CHEN Junping LAN Xiaoqi ZHANG Lei |
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| Institution: | (GNSS System Engineering Center,China Academy of Aerospace Electronics Technology,Beijing 100094,China;Test and Assessment Research Center,China Satellite Navigation Office,Beijing 100094,China;Shanghai Astronomical Observatory,CAS,80 Nandan Road,Shanghai 200030,China;School of Earth Science and Engineering,Hohai University,1 Xikang Road,Nanjing 211100,China;Nanjing Technical Vocational College,58 Huangshan Road,Nanjing 210019,China) |
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| Abstract: | This paper studies the realization of the Beidou wide-area differential real-time ionospheric delay grid correction algorithm in China, and the short-term establishment of the ionospheric delay grid for the Beidou system. Results of BDS-only, GPS-only, and BDS/GPS combined ionospheric delay grid corrections are analyzed and compared. Results show that BDS-only and GPS-only ionospheric delay grid corrections performance are equivalent in the region, with sufficient effective grid point coverage, and the BDS/GPS combined ionospheric delay grid corrections have higher accuracy and improve the positioning accuracy of single frequency user. |
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| Keywords: | BDS/GPS real-time wide area differential ionospheric delay grid corrections |
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