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2010 | OriginalPaper | Chapter

1. Preliminary Results of a GPS/INS Airborne Gravimetry Experiment Over the German Alps

Authors : Ch. Gerlach, R. Dorobantu, Ch. Ackermann, N.S. Kjørsvik, G. Boedecker

Published in: Gravity, Geoid and Earth Observation

Publisher: Springer Berlin Heidelberg

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Abstract

Airborne gravimetry using a combination of GPS and a strapdown inertial measurement unit (IMU) is a well known method. We will present preliminary results of a flight campaign that was carried out in a Cessna 172 with a navigation grade IMU (iNAV-RQH) over a \(20 \times 20\,\textrm{km}\) region in the German Alps. The experiment can be considered an extreme case with dense mapping of a very local area with rough gravity field in a very small aircraft. The recovered gravity disturbance along the trajectory is checked for internal consistency at crossover points. This indicates a precision of the solution in the range of 3 mgal for a spatial resolution for 2 km. Besides classical DGPS we also make use of absolute Precise Point Positioning (PPP), which is an useful alternative if it comes to post-processing solutions, especially for remote areas. The results indicate that the accuracy of the PPP solution is well suited for airborne gravimetry.

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Metadata
Title
Preliminary Results of a GPS/INS Airborne Gravimetry Experiment Over the German Alps
Authors
Ch. Gerlach
R. Dorobantu
Ch. Ackermann
N.S. Kjørsvik
G. Boedecker
Copyright Year
2010
Publisher
Springer Berlin Heidelberg
Book
Gravity, Geoid and Earth Observation

Print ISBN: 978-3-642-10633-0

Electronic ISBN: 978-3-642-10634-7

Copyright Year: 2010

DOI
https://doi.org/10.1007/978-3-642-10634-7_1