Asia Pacific Reference Frame
The member countries of the 18th United Nations Regional Cartographic Conference for Asia and the Pacific
(UNRCC-AP; October 2009, Bangkok) recognised the importance of a consistent and improved regional geodetic framework and agreed to improve the reference frame in Asia-Pacific region.
Asia Pacific Reference Frame (APREF) was materialised to create and maintain an accurate geodetic framework in the Asia-Pacific region in order to fulfil the requirements of a vast subset of users in surveying, industry, research organisation and general public.
Background and objective
There are numerous GNSS networks in the Asia-Pacific region but these networks are sparse and in-accessible compared to Europe and Americas. Moreover these networks are also not inter-linked or linked to the global frame. This absence of sharing data has a degrading impact on the accuracy and nature of geodetic analysis that can be performed.
The short term objectives of APREF are to:
- Foster GNSS data sharing in the Asia-Pacific region
- Develop and maintain a reliable source of coordinates and velocities for geodetic stations in the region
The longer term objectives of APREF are to:
- Work in cooperation with IGS to create and maintain APREF permanent CORS network
- Increase the contribution of APREF stations to the International Terrestrial Reference Frame (ITRF)
- Provide more infrastructure to support geodetic projects
- Establish a dense velocity field model in Asia and the Pacific for scientific applications and the long-term maintenance of the Asia-Pacific reference frame
- Organise regular symposia addressing activities carried out at national and regional levels related to the work and objectives of APREF.
More details about the project are available here.