| BDS/GPS组合天顶对流层延迟的精度分析 |
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| 引用本文： | 陈振国,唐龙江. BDS/GPS组合天顶对流层延迟的精度分析[J]. 测绘工程, 2017, 26(9). DOI: 10.19349/j.cnki.issn1006-7949.2017.09.002 |
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| 作者姓名： | 陈振国 唐龙江 |
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| 作者单位： | 1. 江苏省核工业二七二地质大队,江苏 南京 210000;核工业建设集团有限公司,江苏 南京 210000;2. 辽宁工程技术大学 测绘与地理科学学院,辽宁 阜新,123000 |
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| 基金项目： | 国家青年科学基金资助项目 |
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| 摘 要： | 在现有的精密轨道和钟差条件下,选取8个MGEX跟踪站2014年6—9月的观测数据,详细分析利用BDS/GPS组合PPP法在未固定跟踪站坐标和固定跟踪站坐标情况下估计ZTD的效果,并与IGS提供的对流层产品对比分析。实验分析表明,利用PPP法估计ZTD,BDS ZTD现阶段的STD优于34mm,GPS ZTD与BDS/GPS组合现阶段的STD相当,均优于14mm。与未固定跟踪站情形下估计的BDS ZTD相比,固定跟踪站坐标的方式虽然可以提高利用BDS估计ZTD的稳定性,但不能提高精度。
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| 关 键 词： | BDS/GPS组合 IGS对流层产品 PPP法 MEGX跟踪站 ZTD |
Precision analysis on the zenith tropospheric delays using combined BDS/GPS Data |
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| CHEN Zhenguo,TANG Longjiang. Precision analysis on the zenith tropospheric delays using combined BDS/GPS Data[J]. Engineering of Surveying and Mapping, 2017, 26(9). DOI: 10.19349/j.cnki.issn1006-7949.2017.09.002 |
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| Authors: | CHEN Zhenguo TANG Longjiang |
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| Abstract: | In order to analyze the precision of the zenith tropospheric delays (ZTD) using combined BDS/GPS data under the conditions of the existing final products, the PPP method is used to calculate observation data from June to September in 2014 collected from 8 MGEX stations fixed and unfixed.ZTD result from different conditions is compared with ZTD products of IGS.The result shows that the standard deviation (STD) of BDS ZTD is better than 34mm and in addition.A similar result is achieved by combined BDS/GPS compared to that of GPS only by using PPP method.Compared with BDS ZTD under the unknown of MGEX station, the BDS ZTD under the known of MGEX station is more stable.However, the precision can''t be improved. |
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| Keywords: | combined BDS/GPS ZTD products of IGS Precision Point Positioning method MGEX station ZTD |
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