| 星间单程伪距联合监测站数据确定北斗三号卫星轨道和钟差 |
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| 引用本文： | 阮仁桂,魏子卿,贾小林.星间单程伪距联合监测站数据确定北斗三号卫星轨道和钟差[J].测绘学报,2019,48(3):269-275. |
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| 作者姓名： | 阮仁桂 魏子卿 贾小林 |
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| 作者单位： | 西安测绘研究所,陕西西安710054;地理信息工程国家重点实验室,陕西西安710054;信息工程大学,河南郑州450052;西安测绘研究所,陕西西安710054;地理信息工程国家重点实验室,陕西西安710054 |
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| 基金项目： | 国家自然科学基金（41704035；41774012） |
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| 摘 要： | 提出利用原始单程星间伪距数据联合地面监测站载波相位和伪距数据同时确定北斗卫星轨道和钟差的方法。该方法引入时间窗概念,用多项式表示卫星钟差,从而能够直接对非同时观测的原始单程伪距数据进行平差处理。收集中国境内的6个iGMAS监测站和星间测距数据对北斗三号卫星进行轨道和钟差确定试验。结果表明,轨道重叠段互差在R、T和N方向的RMS分别为0.078、0.321和0.375 m,钟差重叠段互差的RMS和STD分别达到0.589和0.519 ns。相比于仅用国内监测站数据的结果,轨道和钟差的改进幅度分别超过80%和60%。星间链路单程伪距残差的平均RMS为0.083 m,星间链路信号发射和接收设备时延偏差估值的平均稳定度分别为0.53和0.72 ns。
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| 关 键 词： | 星间链路 原始单程星间伪距 设备时延偏差 定轨 钟差解算 |
| 收稿时间： | 2018-10-22 |
| 修稿时间： | 2018-12-20 |
BDS-3 satellite orbit and clock determination with one-way inter-satellite pseudorange and monitoring station data |
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| RUAN Rengui,WEI Ziqing,JIA Xiaolin.BDS-3 satellite orbit and clock determination with one-way inter-satellite pseudorange and monitoring station data[J].Acta Geodaetica et Cartographica Sinica,2019,48(3):269-275. |
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| Authors: | RUAN Rengui WEI Ziqing JIA Xiaolin |
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| Institution: | 1. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China;
2. State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China;
3. Information Engineering University, Zhengzhou 450052, China |
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| Abstract: | In this paper,BDS-3 satellite orbits and clock offsets are determined by using the original one-way inter-satellite-link (ISL) pseudorange data together with the carrier phase and pseudorange data of ground monitoring stations. The satellite clock offsets are expressed by piecewise polynomial with appropriate piecewise intervals (e.g. 1 min), thus the non-simultaneously observed one-way ISL pseudorange data can be processed directly. Experiments of orbit determination and clock estimation for BDS-3 satellites with observation data from 6 iGMAS stations in China and ISL pseudorange data are carried out. The results show that the RMS of the overlapping orbit differences in R, T and N directions are 0.078, 0.321 and 0.375 m, respectively. The RMS and STD of the overlapping clock differences of satellite are 0.589 and 0.519 ns, respectively. Compared with the results obtained with only data from monitoring stations, the improvements of orbit and clock exceed 80% and 60% respectively. The average RMS of one-way ISL pseudo-range residuals is 0.083 m, and the stability of estimated hardware delay bias for transmitting and receiving ISL equipment is 0.53 and 0.72 ns on average, respectively. |
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