Grid VRS technique of real time high-precision location-based service

doi:10.11947/j.AGCS.2022.20210435

Abstract

Abstract: In order to ensure the positioning performance of virtual reference station (VRS) based network RTK,reduce the loading impact of massive concurrent users on the solution server,and improve the service quality of VRS,this paper systematically proposed a VRS gridding technique for massive concurrent user services,and established two methods for VRS generation,namely the coordinates and triangulated irregular network (TIN) VRS grid.Considering that the key problem of space-related atmospheric delay correction is the influence of ionosphere delay,the experimental tests are conducted in the CORS convergence of middle and low latitudes respectively.The effective service spacing of gridded VRS under different regional conditions is analyzed and determined,the results show that the effective service spacing limits of grid VRS in the middle latitude and low latitudes are 12 and 7 km,respectively.Compared with the non-grid VRS (built with SPS results),the VRS generation and computing load can be greatly reduced,and the server's service capabilities to massive users can be significantly improved.

Key words: virtual reference station, atmospheric delay, virtual grid, grid space, location-based service

CLC Number:

P228

HUANG Dingfa, FENG Wei, LI Jianfeng, GONG Xiaoying, LI Shuaishuai. Grid VRS technique of real time high-precision location-based service[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(8): 1717-1724.

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