Realization of BDS/GPS Grid Virtual Pseudorange Differential Positioning and Pseudorange Correction Differential Positioning

doi:10.13474/j.cnki.11-2246.2018.0389

Abstract

Abstract: In order to solve the problem that large-scale reference stations provide network RTD services for mass users and guarantee the security of base station coordinates and data, this paper studies and implements BeiDou/GPS RTCM3.2 pseudorange differential services based on the grid virtualization differentiated service model. Compared with RTCM2.3 pseudorange correction difference service, this paper implements two kinds of differentiated services to form a complete network RTD data source service. Both types of services have been validated in the Sichuan Provincial BDS CORS. After testing, the grid virtual differential positioning services approach is feasible and can guarantee the security of the base station information. Also,this approach can increase the number of concurrent users by 50%. This approach can be used in provincial and regional CORS network RTD service.

Key words: grid virtual pseudorange differential positioning, grid virtual pseudorange correction differential positioning, RTCM2.3, RTCM3.2, BDS/GPS CORS

CLC Number:

P228

ZHANG Jingjing, CHEN Xianchun, BI Jinzhong, FANG Shushan, CHENG Bing. Realization of BDS/GPS Grid Virtual Pseudorange Differential Positioning and Pseudorange Correction Differential Positioning[J]. 测绘通报, 2018, 0(12): 83-86.

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