GPS + GLONASS CORS Processing: The Asian-Pacific APREF Case
The ongoing completion of the GLONASS system asks for a new assessment of its performance in relation to CORS network processing. The recent established Asian-Pacific Reference Frame (APREF) offered such an opportunity. Daily double-difference network solutions have been computed both for GPS-only and GPS + GLONASS processings. The formal precision of the daily solutions as well as the time series of the coordinates and reference frame parameters, derived from multi-annual combinations (2. 5 years) of the daily solutions, have been used to assess the effect of the additional GLONASS observations on the estimates of the coordinates and the stability of the reference frame. Results show that, for 24-h data batches, GLONASS adds little improvement when compared to GPS-only processing.
KeywordsGPS GLONASS CORS ITRF REFERENCE FRAME
The work was supported by iVEC through the use of advanced computing resources located at iVEC@MURDOCH. Part of the presented work has been done in the framework of the Australian Space Research Project (ASRP2, Platform Technologies for Space, Atmosphere and Climate). The third author is the recipient of an Australian Research Council Federation Fellowship (project number FF0883188): this support is gratefully acknowledged.
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