Approach of virtual observations generation of a multi-reference GPS station network

Guorong Yu

doi:10.1117/12.774556

10 November 2007 Approach of virtual observations generation of a multi-reference GPS station network

Guorong Yu

Proceedings Volume 6795, Second International Conference on Space Information Technology; 679546 (2007) https://doi.org/10.1117/12.774556
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

The generation of virtual reference station observations to relay the corrections to the rover receiver for use with standard RTK software is one of important architectures of reference station networks RTK positioning. The approach of virtual observations generation based on a multi-reference GPS station network is presented in this paper. Ambiguities for the baselines in the reference network are determined firstly. The inter-reference-station differential spatially-correlated errors are estimated using highly accurate coordinates of the reference stations and resolved ambiguities. These spatially-correlated errors are interpolated among the network region as corrections. These network-generated corrections are used to correct the zero-differential observables of one reference station, which is usually the closest one to the rover (the so-called primary reference station). These corrected zero-differential observables, named virtual observations, are processed using conventional single reference station differential GPS algorithms. A test conducted using regional reference networks in Jiangsu(China) demonstrates the effectiveness of the approach to reduce the time to integer ambiguity resolution, and to increase the distance over which centimeter level accuracies can be achieved.

Citation Download Citation

Guorong Yu "Approach of virtual observations generation of a multi-reference GPS station network", Proc. SPIE 6795, Second International Conference on Space Information Technology, 679546 (10 November 2007); https://doi.org/10.1117/12.774556

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