Hello all
Last week, an Open Geospatial Consortium (OGC) virtual meeting was hold.
During that meeting, we got a link to a video about dynamic Coordinate
Reference Systems (CRS). This video explains issues to be aware for
anyone who wants to locate a point on Earth with a precision better than
3 meters. In particular the use of WGS84 is not sufficient for such
precision, unless coordinate values are completed by an epoch.
https://youtu.be/IKM-bR6SwVs
This video is produced by IOGP (International Association of Oil & Gas
Producers). IOGP is the creator and maintainer of the EPSG geodetic
dataset, which provides Coordinate Reference System definitions used by
about all GIS (Geographic Information Systems) to my knowledge. The
presenter is Roger Lott, who has been the editor of ISO 19111
(referencing by coordinates) latest revision, of ISO 19162 (Well Known
Text 2) standard and is currently leading the standardization of a file
format for datum shift grids deformation models and more. The recent
advances in OGC/ISO international standards on referencing by
coordinates owe him a lot.
More details on the topic discussed in the video can be found there:
https://www.iogp.org/bookstore/product/geomatics-guidance-note-25-dynamic-versus-static-crss-and-use-of-the-itrf/
Martin
