| PPP_AR模糊度固定模式下的PPP性能分析 |
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| 引用本文： | 张国利,张京奎,杨开伟.PPP_AR模糊度固定模式下的PPP性能分析[J].全球定位系统,2018,43(3):100-106. |
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| 作者姓名： | 张国利 张京奎 杨开伟 |
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| 作者单位： | 1.中国人民解放军 92941部队43分队,辽宁 葫芦岛 125001 |
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| 摘 要： | 利用6个IGS跟踪站一周的静态数据,采用采样间隔为30 s的卫星钟差产品,对精密单点定位（PPP）整周模糊度的固定模式——PPP_AR模式和常规的浮点解模式下的定位精度和收敛时间进行了比较试验。结果表明，PPP_AR模糊度固定模式下,数据之间具有自洽性,定位精度在E-W和N-S两个方向的RMS都优于1 cm,在U-D方向优于3.5 cm,明显高于浮点解模式下的定位精度。且PPP_AR模式下整周模糊度的固定率都在93％以上。PPP_AR模式下的收敛时间集中在20～25 min,浮点解模式25～35 min。
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| 关 键 词： | PPP_AR PPP 自洽性 定位精度 收敛时间 |
Performance Analysis of PPP in Mode of PPP_AR |
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| Institution: | 1.PLA 92941 43 Troops, Huludao 1250012.2.The 54th Research Institute of CETC, Shijiazhuang 050081, China3.State Key Laboratory of Satellite Navigation System and Equipment Technology, Shijiazhuang 050081,China |
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| Abstract: | In this paper, we use one a week data(the sampling interval of satellite clock is 30 s) of six IGS tracking stations to test?the positioning accuracy and convergence time under PPP?fixed ambiguity?pattern-PPP_AR mode and conventional float solution mode. The results show that under PPP_AR solving mode, and for self consistency between the data, positioning accuracy of RMS can be smaller?than 1 cm in both E-W and N-S directions, and in the U-D direction smaller than 3.5 cm,?The results are obviously?better than that of the conventional floating point solution mode. The ambiguity fixed rate under PPP_AR mode is larger than 93％, the convergence time of PPP_AR mode focused on 20～25 min, while of?the float solution mode?on 25～35 min. |
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