Analysis of virtual grid technology impact on dynamic positioning of network RTK

doi:10.13474/j.cnki.11-2246.2020.0157

Abstract

Abstract: For the consideration of RTK users of large concurrent networks, the virtual grid technology has been gradually generalized in the upgrade of BeiDou ground-based augmentation system. This paper first introduces the principle of virtual grid technology, and takes the Qianxun BDS ground-based augmentation system as an example to study the implementation procedures and details of virtual grid technology. Meanwhile, the rule of the Qianxun BDS ground-based augmentation system virtual grids’ distribution in April 2018 and June 2019 is analyzed in this paper. Then, for the dynamic positioning application, the influence of virtual grid point switching on dynamic positioning is studied. The results show that the effect of virtual grid point switching on dynamic positioning is in the centimeter level, which can be neglected for vehicle dynamic applications. This paper has reference significance for the large concurrency and dynamic application of BDS ground-based augmentation system in the future.

Key words: virtual grid, network RTK, dynamic application, BeiDou, real-time positioning

CLC Number:

P228

LI Lihong, SHI Junbo, OUYANG Chenhao. Analysis of virtual grid technology impact on dynamic positioning of network RTK[J]. Bulletin of Surveying and Mapping, 2020, 0(5): 115-118.

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