Three-Dimensional Geodetic Control by Interferometry with GPS (Global Positioning System): Processing of GPS Phase Observables

Interferometry with the NAVSTAR Global Positioning System (GPS) is the most efficient method of establishing three-dimensional geodetic control on local and regional scales. This is already true, even though the constellation of satellites is incomplete. We consider some theoretical and practical as...

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Bibliographic Details
Main Authors: Bock,Y, Abbot,R I, Counselman,C C , III, King,R W, Gourevitch,S A
Format: Report
Language:English
Subjects:
ACCURACY
ALGORITHMS
ARTIFICIAL SATELLITES
CONTROL
COORDINATES
Geodesy
GEODETIC SATELLITES
GLOBAL POSITIONING SYSTEM
INTERFEROMETRY
MULTIPLE OPERATION
NETWORKS
OBSERVATION
ORBITS
PE61102F
PROCESSING
REGIONS
SCALE
STATIONS
THREE DIMENSIONAL
WUAFGL2309G1BD
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Summary:Interferometry with the NAVSTAR Global Positioning System (GPS) is the most efficient method of establishing three-dimensional geodetic control on local and regional scales. This is already true, even though the constellation of satellites is incomplete. We consider some theoretical and practical aspects of using differenced carrier-phase observations of the GPS satellites to establish three-dimensional control networks. We present simple and efficient algorithms for processing multi-station, multi-satellite observations. These algorithms have been used to establish three-dimensional control networks. Under widely varying conditions, we have obtained accuracies of 1 to 1.5 parts per million (ppm) in all three coordinates, or by 1 to 3 cm for the coordinates differences between network stations separated 10 to 20 km. when interferometry is used also to determine the satellite orbits, we anticipate improvement of the accuracy of regional control networks to the level of 0.1 ppm. Keywords: Geodesy; Geodetic control; Geodetic networks; Three dimensional geodesy; Satellite geodesy; NAVSTAR Global Positioning System; and Interferometry. Presented at International Symposium on Precise Positioning with the Global Positioning System (1st), Rockville, MD 15-19 Apr 85.