To enable the full spectrum of GNSS usability, the establishment and maintenance of
respective geodetic infrastructures for GNSS positioning services (GIPS) are
Besides the geomonitoring component (GIPS-4) for GNSS-stations coordinate integrity monitoring as well as for their use as early-warning and disaster mitigation geomonitoring networks (www.monika.ag, www.goca.info), GIPS has two transformation components. Both transformation components concern the GNSS-consistent infrastructure for spatial information (cadastre, GIS, urban planning, precise outdoor/indoor navigation, construction, transportation, meteorology, land management, precise agriculture, etc.).
The horizontal transformation component (GIPS-1) is related to the georeferencing of spatial objects between the different modern regional ITRF-related frames (e.g. ETRF89 in Europe, SIRGAS in South America etc.) and the existing classical national reference frames (fig. 5). GIPS-1 requires the establishment of respective datum-transformation databases (see www.geozilla.de). These databases enable the set up of RTCM transformation messages (GIPS-3), and they can be for the used on GNSS controllers, in both cases as infrastructure for GNSS-positioning services. Further these transformation-parameter databases (GIPS-1) are needed interdisciplinarily in GIS-related applications.
The computation of HRS (Geoid N or QGeoid NQG) - as task of GIPS-2 - enables by H = h – N the conversion of ellipsoidal GNSS heights h to physical height H. GIPS-2 (www.dfhbf.de) is therefore the second essential transformation component and modern spatial infrastructure by enabling precise GNSS height-positioning in GNSS positioning services.