| 北斗/GNSS机载动态PPP性能分析 |
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| 引用本文： | 赵龙,郭将,栗广才,罗锋.北斗/GNSS机载动态PPP性能分析[J].全球定位系统,2022,47(5):57-64. |
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| 作者姓名： | 赵龙 郭将 栗广才 罗锋 |
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| 作者单位： | 1.武汉大学 测绘学院, 武汉 430079 |
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| 基金项目： | 中国自然资源航空物探遥感中心青年创新基金(2020YFL02)；中央高校基本科研业务费专项资金(2042022kf1035)；武汉大学测绘遥感信息工程国家重点实验室专项科研经费资助. |
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| 摘 要： | 针对基于机载动态场景下的实测数据，使用开源的PRIDE PPP-AR软件，采用伪距和载波相位观测值构建双频的消电离层组合(IF)进行了动态精密单点定位(PPP)实验，并对比了单北斗卫星导航系统(BDS)以及BDS/GNSS在进行机载大动态PPP定位方面的性能. 结果表明:多系统组合在卫星数、卫星几何构型以及位置精度衰减因子(PDOP)等方面均优于单系统，且对比单GPS而言，平面(东(E)、北(N)、高程(U))方向的定位精度分别提升了10%和12%；此外将开源软件PRIDE PPP-AR的解算结果与商业软件WayPoint进行了对比，结果表明前者的定位精度在E和U方向分别提升了46%和36%，N方向提升最多，提升了近2倍，因而PRIDE PPP-AR具备更高的动态解算精度与可靠性.
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| 关 键 词： | 机载动态 精密单点定位(PPP) 多系统 性能评估 PRIDE PPP-AR |
| 收稿时间： | 2022-05-30 |
Performance analysis of BDS/GNSS airborne kinematic PPP |
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| Institution: | 1.School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China2.Key laboratory of airborne geophysics and remote sensing geology, Ministry of nature and resources, Beijing 100083, China3.GNSS Research Center, Wuhan University, Wuhan 430079, China |
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| Abstract: | Based on the measured data in the airborne kinematic scene, this paper uses the open-source PRIDE PPP-AR software to construct a dual-frequency ionosphere-free combination (IF) using the pseudorange and carrier phase observations for kinematic precise point positioning (PPP) experiment, and it also compares the performance of a single BDS system and BDS/GNSS in airborne large kinematic positioning. The results show that the number of satellites, satellite geometry and position dilution of precision (PDOP) of the multi-system combination are superior. In a single system, the positioning accuracy in the plane (east (E), north (N) and up (U) )directions are improved by 10% and 12% respectively. In addition, this paper compares the solution results of the open-source software PRIDE PPP-AR with the commercial software WayPoint, the results show that the positioning accuracy of the former is improved by 46% and 36% in the E and U directions respectively, and the N direction is the most improved, nearly doubled. Therefore, PRIDE PPP-AR has higher solution accuracy and better solution performance. |
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