GPS Software Development for Use in Aerogravimetry: Strategy, Realization, and First Results

Guochang Xu, Klaus Hehl, and Detlef Angermann

Abstract:	One of the most important problems in aero- gravimetry is to determine tl..-? position, velocity and acceleration of the gravir,.eter. For a resolu- tion of the gravity field of 1 x..gal/km, accuracies of 1 m (height), 7 cm/s and 0 001 cm/s2, respec- tively, are required. The GPS system now pro- vides a powerful tool to direct1.b. determine the po- sition and velocity of the movmg gravimeter. As a first step of the aerogravimetiry project in Geo- ForschungsZentrum Potsdam, a new GPS soft- ware for static and kinematic measurements is un- der development. The software is equipped with an adjustment-filter core, which provides sever- al well derived algorithms specifically suitable for GPS data processing, and a modules integrator, which includes several data processing methods and their combinations. An important feature of the software is tha.t block-wise correlated data can be processed sequentially allowing increasing number of unknowns and arbitrarily introduction of condition equations. The residuals are anal- ysed with spectral analysis methods and system- atic errors can be studied. The application of the software is unlimited in number of sites and ses- sions, theoretically. The GPS data preprocessing was included into the main procedure in view of the intended goal of real time processing. A carborne gravity campaign applying GPS kinematic navigation was carried out together with Bundesanstalt fuer Geowissenschaften und Rohstoffe (BGR) at the end of 1993 in Germany, The application of our new GPS software and the first results of GPS navigation are presented.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1637 - 1642
Cite this article:	Xu, Guochang, Hehl, Klaus, Angermann, Detlef, "GPS Software Development for Use in Aerogravimetry: Strategy, Realization, and First Results," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1637-1642.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In