Authors / CoAuthors
Hu, G. | Dawson, J. | Jia, M. | Deo, M. | Ruddick, R. | Johnston, G.
Abstract
GNSS is the most effective way to achieve a robust and globally consistent regional reference system. Recognising the importance of improving the regional geodetic framework in the Asia-Pacific region, the Asia-Pacific Reference Frame (APREF) project call for participation was released in March 2010. The APREF project is a joint initiative of the Permanent Committee for GIS Infrastructure of the Asia-Pacific (PCGIAP) and the International Association of Geodesy (IAG). Currently, GNSS data from a Continuously Operating Reference Station (CORS) network of approximately 400 stations, contributed by 28 countries, is available and processed by three Local Analysis Centres (LACs). The contributions of the LACs are combined into a weekly solution in SINEX format using the CATREF software. The products of the APREF project are coordinates and velocities of the APREF GNSS network stations in the recent realisation of the International Terrestrial Reference Frame (ITRF), and time series of the coordinates of the APREF CORS. Three kinds of APREF products are available, rapid daily solutions which are produced using IGS rapid products, final daily solutions which are produced using IGS final products, and the weekly combined solutions. The core product of the APREF is the weekly solution; it provides a reliable time-series of the regional reference frame in the ITRF and a quality assessment of the performance of participating Asia-Pacific GNSS CORS. In this paper, two case studies of the applications of the APREF project are presented: the detection of coseismic displacement and monitoring the stability of CORS.
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nonGeographicDataset
eCat Id
72813
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- External PublicationScientific Journal Paper
- ( Theme )
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- geodesy
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2011-01-01T00:00:00
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