| 一种高精度北斗基线解算软件的研制与性能分析 |
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| 引用本文： | 严丽,黄丁发,朱东伟.一种高精度北斗基线解算软件的研制与性能分析[J].武汉大学学报(信息科学版),2017,42(12):1785-1791. |
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| 作者姓名： | 严丽 黄丁发 朱东伟 |
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| 作者单位： | 1.西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室, 四川 成都, 610031 |
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| 基金项目： | 国家自然科学基金41374032长江学者和创新团队发展计划PCSIRT |
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| 摘 要： | 针对高精度载波相位相对定位解算的需求，研制了北斗基线解算软件BGO（BeiDou Navigation Satellite System/Global Positioning System Office）。BGO能单独处理北斗及GPS数据，也可以将北斗与GPS观测数据进行联合解算。结合一高速铁路基础平面控制网（basic plane control network，CPI）的测试表明，BGO解算北斗基线X、Y、Z方向的分量精度分别优于1 mm、2 mm、1 mm，能满足高精度高速铁路CPI控制网的要求；BGO处理GPS数据的精度与TGO（Trimble Geomatics Office）软件、Bernese软件基本一致，处理北斗与GPS联合基线性能与TBC（Trimble Business Center）软件相当。相比独立系统，联合处理北斗和GPS数据能有效提高基线解算合格率与精度。
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| 关 键 词： | 北斗 GPS 基线解算软件 北斗和GPS联合数据处理 性能分析 |
| 收稿时间： | 2015-12-16 |
Development and Performance Analysis of a High Precision BDS Baseline Processing Software |
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| Affiliation: | 1.State-Province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | BDS(BeiDou Navigation Satellite System) is the first heterogeneous constellation and the only currently fully operational tri-band navigation system. However, the international and domestic market is still dominated by GPS(Global Positioning System), since BDS starts relatively late. Because of the differences between BDS and GPS in space-time reference frame, constellation structure, signals and data quality, the existing high precision GPS data processing software can not directly deal with the BDS data. In order to realize high precision BDS positioning, the corresponding BDS data processing software must be developed as soon as possible. In this paper, the key issues of BDS/GPS high precision relative positioning are studied, and static relative positioning algorithm model is proposed. Moreover, this paper introduces a self-developed high precision BDS and GPS baseline processing software BGO(BDS/GPS Office), which contains BDS, GPS and combined baseline processing modules. The software is applied to process a CPI control network of high speed railway. The results show that BDS baseline precision is better than 1 mm in X and Z direction, and is better than 2 mm in Y direction. The experiment indicates that BDS baseline solutions meet the requirement of high speed railway CPI data processing. GPS baseline solutions from BGO are equivalent to the results from TGO(Trimble Geomatics Office) and Bernese software, and BDS/GPS combined baseline solutions from BGO are well-matched with the solutions from TBC(Trimble Business Center) software. Comparing BDS and GPS alone system, BDS/GPS combined could improve qualified rate and precise of baseline solutions. |
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