BDS-3/GNSS multi-frequency precise point positioning ambiguity resolution using observable-specific signal bias
BDS-3/GNSS multi-frequency precise point positioning ambiguity resolution using observable-specific signal bias
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利用可观测特定信号偏置的BDS-3/GNSS多频精密单点定位模糊度解析
DOI：
10.1016/j.measurement.2022.111134
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发表时间：
2022-04
期刊：
影响因子：
5.6
通讯作者：
Shen Fei
中科院分区：
文献类型：
--
作者：
Cao Xinyun;Yu Xuesheng;Ge Yulong;Liu Tianjun;Shen Fei
With the completion of the BeiDou Global Navigation Satellite System (BDS-3), more available frequencies have brought opportunities for precise point positioning ambiguity resolution (PPP-AR). This research theoretically deduced the multi-frequency PPP-AR model and the rule of observable-specific signal bias (OSBs) transformation. Then 34 International GNSS Service stations were selected to investigate the multi-frequency BDS-3 and multi-GNSS PPP-AR. The results suggested that the OSBs products provided by Centre National D'Etudes Spatiales (CNES) have absorbed the impact of inter-frequency clock bias and could be directly added to the original observations to restore the integer characteristics of the multi-frequency ambiguity. Meanwhile, the antenna phase center correction should keep consistent when using the CNES OSBs to restore the Melbourne-Wübbena ambiguity. The BDS-3 quad-frequency ambiguity-fixed convergence time was 39.0 and 25.1 min for kinematic and static PPP, which was shortened by nearly 15.0 and 3.4 min than the dual-frequency ambiguity-fixed solution. The quad-system multi-frequency PPP-AR showed the optimal state, which was 0.66, 0.76 and 2.66 cm for kinematic mode while 0.31, 0.31 and 1.02 cm for static mode in east, north, and up directions, respectively.
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影响因子：
2.6
作者：
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