Terms of Reference and Objectives

The sub-commission is concerned with the following areas of investigation:

- Regional geoid projects: data sets, involved institutions,

- comparison of methods and results, data exchange, comparison with global models

- gravimetric geoid modeling techniques and methods, available software

- GPS/leveling geoid determination:

- methods, comparisons, treating and interpretation of residuals

- common treatment of gravity and GPS/leveling for geoid determination

- geoid applications: GPS heights, sea surface topography, integration of geoid models in GPS receivers, vertical datums

- other topics: topographic effects, downward and upward continuation of terrestrial, airborne, satellite data specifically as applied to geoid modeling

To meet these goals, the Sub-commission invites the establishment of Special Study Groups (SSG’s) on relevant topics, and of projects on regional geoid determination. It promotes and organizes special sessions at IAG Symposia and other conferences, and reports on the research work in these areas of interest. Also, the sub-commission plans to facilitate the interaction of the various regional geoid projects by organizing links of communication on the Internet.