| BDS/GPS非差“一步法”融合定轨数据质量及精度分析 |
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| 引用本文： | 庞鹏,李建文,代桃高,李涌涛.BDS/GPS非差“一步法”融合定轨数据质量及精度分析[J].测绘科学技术学报,2017(6):593-596,601. |
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| 作者姓名： | 庞鹏 李建文 代桃高 李涌涛 |
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| 作者单位： | 1. 信息工程大学,河南郑州,450001;2. 63883部队,河南洛阳,471000 |
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| 摘 要： | 目前BDS/GPS融合定轨方法主要为"两步法"融合定轨。但在解算过程中,两个系统之间存在系统偏差会使BDS定轨精度下降。为降低融合定轨中系统偏差对轨道精度的影响,采用B1/B3和L1/L2频点组合的非差"一步法"融合定轨的方法,把BDS和GPS卫星置于同一参考框架下进行定轨,并对B1/B3频点的数据进行质量分析。结果分析证明,B1/B3频点数据质量优于B1/B2频点数据质量;"一步法"非差融合定轨获取的BDS轨道精度也优于"两步法"融合定轨获取的BDS轨道精度。其中BDS-MEOIGSO卫星定轨精度优于100 mm;BDS-GEO卫星定轨精度优于1 000 mm。
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| 关 键 词： | 融合定轨 非差 一步法 数据质量 精度 |
Data Quality and Accuracy Analysis of BDS/GPS Non-Differential One-Step Multi-Orbit Determination |
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| Abstract: | At precent,determinating orbit by "two-step" is the main method of BDS/GPS multi-orbit determination.However,during the calculation process,the systematic bias of the reference frame will reduce the accuracy of BDS orbit determianted.In order to eliminates the systerm bias,one-step non-differential multi-orbit determination with B1/B3 & L1/L2 is adopted.In this method,GPS and BDS stallites are processed in one reference frame for determination.And the data quality of B1/B3 are analysised.The result shows that the data quality of B1/B3 is better than that of B1/B2,and the accuray of BDS satellite orbit determinating in one step is better than that in two steps.The orbit accuracy of BDS-MEO and IGSO is better than 100 mm,and that of the BDS-GEO orbit is better than 1000 mm. |
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| Keywords: | multi-orbit determination non-differential one-step method data quality accuray |
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