BDS-3精密单点定位时间传递综合性能分析 |
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引用本文: | 翟宏亮,王胜利. BDS-3精密单点定位时间传递综合性能分析[J]. 全球定位系统, 2022, 47(4): 31-38. DOI: 10.12265/j.gnss.2021101306 |
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作者姓名: | 翟宏亮 王胜利 |
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作者单位: | 1.中煤科工集团南京设计研究院有限公司, 南京 210031 |
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基金项目: | 中煤科工集团南京设计院有限公司自立科研项目(ZL21-KY02) |
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摘 要: | 我国北斗三号卫星导航系统(BDS-3)的建设已基本完成,因而,充分利用当前BDS-3进行精密单点定位(PPP)的时间传递亟需深入研究.本文从两方面来充分研究BDS-3 PPP时间传递:1)北斗二号卫星导航系统(BDS-2)、BDS-3和BDS-2+BDS-3 PPP时间传递;2)钟模型约束的BDS-3 PPP时间传递.试验结果表明:相比BDS-2 PPP,BDS-3和BDS-2+BDS-3 PPP结果平滑残差的均方根(RMS)值可减少约为34.5%和38.23%,960 s的稳定度分别提高35.81%和37.75%;相比传统的白噪声(WN)模型,基于钟模型的BDS-3和BDS-2+BDS-3 PPP时间传递所得平滑残差RMS值分别减少65.17%和74.42%;频率稳定度最大可提高80%.
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关 键 词: | 北斗三号卫星导航系统(BDS-3) 精密单点定位(PPP) 时间传递 原子钟模型 北斗二号卫星导航系统(BDS-2) |
收稿时间: | 2021-10-13 |
Comprehensive performance analysis of BDS-3 precise point positioning time transfer |
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Affiliation: | 1.China Coal Technology and Engineering Group Nanjing Design and Research Institute Co., Ltd., Nanjing 211800, China2.College of Ocean Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China |
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Abstract: | The construction of China’s BeiDou-3 Navigation Satellite System (BDS-3) has been basically completed. Therefore, full use of the current BDS-3 satellite for precise point positioning (PPP) time transfer requires urgent research. This article analyzes BDS-3 PPP time transfer in two aspects. 1) BeiDou-2 Navigation Satellite System (BDS-2), BDS-3 and BDS-2+BDS-3 PPP time transfer. 2) Clock model constrained BDS-3 PPP time transfer. The results show that the root mean squares (RMS) values of smoothed residual value obtained by BDS-3 and BDS-2+BDS-3 PPP can be reduced by 34.5% and 38.23%, the frequency stability of 960 s is increased by 35.81% and 37.75% respectively, compared with BDS-2 PPP; compared with the traditional white noise model, the RMS values of the smoothed residual obtained by BDS-3 and BDS-2+BDS-3 PPP time transfer with the clock model is reduced by 65.17% and 74.42%; in addition, frequency stability can be increased up to 80%. |
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