Latest results in strapdown airborne gravimetry using an iMAR RQH unit

D. Becker, M Becker, Arne Vestergaard Olesen, Jens Emil Nielsen, René Forsberg

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Abstract

This paper summarizes the results of four recent airborne gravity campaigns, carried out between October 2013 and October 2015. For the measurements, a strapdown inertial measurement unit, type iMAR RQH 1003, was used in combination with a geodetic two-frequency GNSS receiver (Javad Delta). A centralized Kalman-Filter in combination with an RTS-smoother is used to estimate three-dimensional gravity disturbances, i.e. also including the deflections of the vertical (vector gravimetry). A thermal correction is applied to the QA2000 accelerometers in order to remove most of the long term drifts, relaxing the common requirement of an adjustment of the strapdown gravity data. Results were evaluated based on cross-over statistics, indicating standard deviations in the range from 1.0 to 1.4 mGal (without adjustment). This is an excellent result for strapdown gravimetry, clearly reaching the accuracy level of the classical instruments and thereby emphasizing the large potential of strapdown gravimetry for future campaigns
Original languageEnglish
Title of host publicationProceedings of the 4th IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements (TG-SMM 2016)
PublisherState Research Center of the Russian Federation
Publication date2016
Pages19-25
ISBN (Electronic)9785919950332
Publication statusPublished - 2016
Event4th IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements - Saint Petersburg, Russian Federation
Duration: 12 Apr 201615 Apr 2016

Conference

Conference4th IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements
CountryRussian Federation
CitySaint Petersburg
Period12/04/201615/04/2016

Cite this

Becker, D., Becker, M., Olesen, A. V., Nielsen, J. E., & Forsberg, R. (2016). Latest results in strapdown airborne gravimetry using an iMAR RQH unit. In Proceedings of the 4th IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements (TG-SMM 2016) (pp. 19-25 ). State Research Center of the Russian Federation .