Other
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusm.g21a..08w&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #G21A-08
Other
1227 Planetary Geodesy And Gravity (5420, 5714, 6019), 1229 Reference Systems, 1241 Satellite Orbits, 1247 Terrestrial Reference Systems
Scientific paper
The dedicated goal of the International GPS Service (IGS) is 'to provide a service to support geodetic and geophysical research activities through GPS data and data products'. To accomplish its mission IGS began routine operations in Jan 1994. Nowadays operations are based on a large number of components like a globally distributed tracking network of about 200 stations, local and regional data centers as well as eight analysis centers. This presentation summarizes the measurement principles of the GPS and GLONASS microwave satellite navigation systems. An overview of current IGS-products will be given and factors limiting the accuracy of these products are discussed. Moreover IGS serves as one of the technique center of the IERS and therefore the delivered products follow designated IERS standards as close as possible. It can be anticipated that the IGS will also play an important role within the framework of an upcoming Globally Integrated Geodetic Observing System. Even today there are a number of scientific crosslinks to other space geodetic techniques and services e.g. to the ILRS in the determination of the geocentre or to the IVS in questions of a temporal and spatial densification of the reference frame. The above-mentioned initiative will strengthen further the cooperation and increase the scientific outcome.
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