An Modified Method for Airborne Gravimetry Data Processing

WANG Haihong; NING Jinsheng; LUO Zhicai

doi:10.13203/j.whugis20160242

Volume 41 Issue 4

Apr. 2016

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Geomatics and Information Science of Wuhan University > 2016 > 41(4): 511-515. > DOI: 10.13203/j.whugis20160242

WANG Haihong, NING Jinsheng, LUO Zhicai. An Modified Method for Airborne Gravimetry Data Processing[J]. Geomatics and Information Science of Wuhan University, 2016, 41(4): 511-515. DOI: 10.13203/j.whugis20160242

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An Modified Method for Airborne Gravimetry Data Processing

1.
School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2.
Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan 430079, China

Funds: The National Natural Science Foundation of China, Nos.41174062, 41131067; the Project of China, No.2013CB733302; the Special Fund for Surveying, Mapping and Geoinformation Scientific Research in the Public Interest, No.201512002.

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Received Date: October 13, 2014
Published Date: April 04, 2016

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Abstract

Abstract

At present, Vertical components gravity is measured and solved in a local frame with the E tv s correction in airborne scalar gravimetry systems. The classic method ignores the vertical deflection effect. In this study, an improved formula is presented and the gravity measurement problem is solved in a quasi-inertial frame. The modified method improves the classical formulas for scalar systems theoretically, avoiding computing Eötvös and other approximations. The method was validated using a numerical test. The results show that the unnecessary approximations found in the traditional method will cause sub-mGal level errors. However, these errors can become almost negligible after applying a low-pass fillter with cut-off frequency at less than 1/60 s. In addition to this theoretical advantage, the modified method can acquire mGal-level horizontal gravity estimates through a precise data processing.
- airborne gravimetry,
- Eö,
- tvö,
- s correction

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