| 北斗卫星天线相位中心改正模型精化及对精密定轨和定位影响分析 |
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| 引用本文： | 张勤,燕兴元,黄观文,解世超,曹钰. 北斗卫星天线相位中心改正模型精化及对精密定轨和定位影响分析[J]. 测绘学报, 1957, 49(9): 1101-1111. DOI: 10.11947/j.AGCS.2020.20200289 |
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| 作者姓名： | 张勤 燕兴元 黄观文 解世超 曹钰 |
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| 作者单位： | 1. 长安大学地质工程与测绘学院, 陕西 西安 710054;2. 中山大学测绘科学与技术学院, 广东 广州 510275 |
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| 基金项目： | 国家重点研发计划（2018YFC1505102）；国家自然科学基金面上项目（41774025；41731066）；陕西省技术创新指导专项基金（2018XNCGG05）；北斗二代重大专项（GFZX0301040308） |
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| 摘 要： | 针对BDS-2和BDS-3卫星联合精密定轨和精密定位中高精度BDS-2 IGSO/MEO卫星天线相位中心改正在轨估计模型的缺失问题，本文采用了改进的PCV和z-offset参数估计方法，精化了BDS-2 IGSO/MEO卫星B1I/B3I无电离层组合PCC模型。数值验证结果表明：相比北斗官方发布的PCO地面标定值，本文精化的PCC模型使得精密轨道SLR残差的STD减小了0.6~2.4 cm，改善百分比为8.6%~33.3%；基于本文精化的BDS-2和已有BDS-3卫星精化的PCC模型使得精密定位浮点解在高程方向显著提升了9.5 mm（37.2%）。
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| 关 键 词： | 北斗二号 北斗三号 卫星天线相位中心改正模型 联合精密定轨 精密定位 |
| 收稿时间： | 2020-06-30 |
| 修稿时间： | 2020-08-21 |
Refinement of BeiDou satellite antenna phase center correction model and its impact on precision orbit determination and positioning |
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| ZHANG Qin,YAN Xingyuan,HUANG Guanwen,XIE Shichao,CAO Yu. Refinement of BeiDou satellite antenna phase center correction model and its impact on precision orbit determination and positioning[J]. Acta Geodaetica et Cartographica Sinica, 1957, 49(9): 1101-1111. DOI: 10.11947/j.AGCS.2020.20200289 |
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| Authors: | ZHANG Qin YAN Xingyuan HUANG Guanwen XIE Shichao CAO Yu |
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| Affiliation: | 1. College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China;2. School of Geospatial Engineering and Science, Sun Yat-sen University, Guangzhou 510275, China |
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| Abstract: | Aiming at the lack of high accurate antenna phase correction (PCC) model for the BDS-2 IGSO and MEO satellites, in the BDS-2 and BDS-3 satellites joint precision orbit determination (POD) and precise point positioning (PPP), in this paper, an improved method for estimating PCV and z-offset parameters is used to refine the B1I/B3I ionosphere-free linear combination PCC model for the BDS-2 IGSO and MEO satellites. Compared with the results obtained using the ground-calibrated PCO model published by BeiDou official, the STD of SLR residuals obtained by the POD using the refined PCC model is reduced by 0.6~2.4 cm, and the improvement percentage is about 8.6%~33.3%. The floating PPP solution results, based on the refined BDS-2 satellite PCC model in this paper and the existing BDS-3 PCC model, have been significantly improved by 9.5 mm (37.2%) in the elevation direction. |
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