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| THE DETERMINATION OF THE POSITION, VELOCITY AND ACCELERATION SOFTWARE FOR GPS IN AIRBORNE GRAVIMETRY |
| LIU Yin-biao1,2, LI Xiao-bin1,3, ZHANG Gui-bin1 |
1. School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China;
2. Inner Mongolia Institute of Geological Survey, Hohhot 010020, China;
3. Mine Safety Technology Branch of China Coal Research Institute, Beijing 100013, China |
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Abstract The key problem that airborne gravimetry has to solve is how to separate the disturbing accelerations generated by aviation from the total acceleration observed by gravimeter. The GPS technology is one of the methods to solve the problem. With it, we can get the position, velocity, acceleration and any other parameters of the aircraft carrier with high accuracy which can be used to make the necessary correction of the total acceleration. The authors have developed the GPS post-processing software system for airborne gravimetry, which is called EGPS, on the basis of the concept of software architecture. The software is the integration of different functional components according to certain interactive mode. EGPS uses the method of pseudo-range difference to get the position, and employs the method of Doppler frequency shift to get the velocity of the aircraft carrier with high accuracy. This paper presents the processing results of actual airborne gravimetry GPS data using EGPS. The data support a conclusion that EGPS has basically met the requirement of airborne gravimetry for GPS post-processing.
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Received: 13 February 2012
Published: 10 December 2012
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