About This Working Group
The FIG Working Group 5.2 (Reference Frame in Practice) was initially
created at the FIG Congress in Brighton in 1998 and reorganised at the
FIG Congresses in Washington 2002 and in Munich 2006. Its work plan and
mission is described below. In short terms, the working group will try
to summarize important questions for the surveyor regarding reference
frame issues. This is done at this webpage by gathering technical
manuals, fact sheets, links etc. and can be seen more as internet portal
for information. Among the links we have also gathered links to national
agencies that are responsible for national transformation formulae etc.
The proposed Chair of the working group is:
Mikael Lilje (Sweden),
Geodetic Research Division
SE-802 81 GÄVLE
SWEDEN
e-mail: mikael.lilje@lm.se
The Core Members for the period 2002-2006 were besides the chair
also:
Their participation for the period 2006-2010 needs to be confirmed.
Beside the core members group, there were a reference member group.
The members were :
- Bengt Eurenius (Sweden)
- Francoise Duquenne (France)
- Per-Ola Eriksson (Sweden)
- Vladimir Sedlak (Slovakia)
- Graeme Blick (New Zealand)
- Matt Higgins (Australia)
- Ales Cepek (Czech Republic)
Anyone can be a member of the working group. If you are interested to
contribute, please send an email to Mikael Lilje or Rob Sarib.
The working group meets specifically during FIG events as the FIG
Working Weeks. At these events the working group tries to organise
special sessions concerning the subject. The working group also tries to
develop or search the Internet for Technical Fact Sheets as outlined
above.
Work Plan
Policy Issues
- Work to bring together all organisations involved in defining or
using reference frames to develop common approaches and avoid
duplication. Such organisations include FIG, the International
Association of Geodesy (IAG), ISO, groups of national mapping
agencies, other influential national agencies (such as the US
Department of Defence’s National Geospatial-Intelligence Agency (NGA),
which is responsible for WGS84.) and alliances of commercial
organisations (such as Open GIS Consortium and the European Petroleum
Survey Group).
- Continue the existing co-operation with IAG on the African
Reference Frame Project (AFREF) as well as facilitate similar
actions on other continents such as South America and Asia
- Provide background technical information on relevant issues
written in a way that is accessible to the surveying practitioners.
- Develop an inventory of approaches to reference frame issues in
different countries (including transformation methodologies) that is
accessible to surveying practitioners
- Examine the concepts of dynamic and semi-dynamic datums.
- Examine how surveying practitioners are changing how they access
the reference frame, through less emphasis on networks of ground
monuments and more emphasis on Global Navigation Satellite Systems
(GNSS) base stations.
- Examine global positioning services such as OmniSTAR and
StarFire and their use for positioning in a national reference
frame
- Examine the increased use of GNSS for height determination and the
use of geoid models etc for connection to local height datums.
- Examine the role that the satellite missions GRACE, GOCE and
CHAMP will have on global geoid models
- Examine the increasing role of aerial and space based imagery in
the realisation of reference frames.
- Liaise with Commission 4 to review and revise (where required)
FIG Publication 37, Vertical Reference Surface for Hydrography
Chair
Mikael Lilje (Sweden), e-mail:
mikael.lilje@lm.se
Specific project(s)
- Initiate, contribute and facilitate meeting(s) of all
organisations involved in defining or using (regional) reference
frames to develop common approaches and avoid duplication.
- Continue development of Technical Fact Sheets that briefly explain
basic concepts, practical applications and issues and which summarise
the activities of organisations with specific responsibilities in the
field.
- Ensure terminology used in above publications conform to and give
substance to the relevant Standards coming from ISO TC211.
- Ensure that the working group web page is running and updated.
Workshops
- Participation in FIG Working Weeks and other major Commission
events (see events section below) with dedicated Technical Sessions
and/or Workshops as appropriate.
- Seminars and meetings involving key organisations involved in
defining or using (regional) reference frames will be convened at a
venue, time and date to be confirmed by the Working Group Chairs.
- Symposium on Applications of Permanent GPS/GNSS Networks. WG 5.2
and WG 5.3 event.
Publications
- Web page
- FIG Working Weeks will include Technical Papers on specific
issues and presented by Working Group Members and other invited
experts.
- Technical Fact Sheets as outlined above.
- Working group final report will be presented at FIG Congress,
2010.
Time table
- Draft publications will be presented at FIG Working Weeks during
the term of this plan and according to a timetable to be developed
by the Working Group Chairs.
- Working group final report: dedicated session, FIG Congress,
2010.
|
