Research and Evaluation on Key Technological Target System for Marine and Airborne Gravity Surveys

doi:10.11947/j.AGCS.2018.20170617

Abstract

Abstract: Technological standard is an important scientific basis for marine and airborne gravity surveys. In accordance with the lack of the present specifications to reflect the trend of the times for marine and airborne gravity surveys,a detail analysis and research is made on key targets, such as the density of surveying line layout, survey accuracy, space resolution, zero drift and dynamic repeatability of air-sea gravimeter,etc. An evaluation system of survey accuracy targets including root mean square of errors(RMS),systematic error and mean error for marine and airborne gravity surveys is suggested. And an evaluation system of stability targets including calibration accuracy of scale value, total month zero drift, RMS of nonlinear month drift and limited deviation of nonlinear month drift is proposed. The methods of testing and evaluating the above technological targets are introduced. And some key mathematic models about reduction of observed values for marine gravity survey,Eötvös correction for airborne gravimetry,platform tilt correction and evaluation of survey accuracy for air-sea-borne gravimetry are analyzed and modified. The obtained conclusions provide useful theoretical support for the revision of existing specifications for future civil-military inosculation of marine and airborne gravity surveys.

Key words: marine and airborne gravimetry, technological standard, target system, analysis and research, test and evaluation, model modification

CLC Number:

P223

HUANG Motao, LIU Min, WU Taiqi, LU Xiuping, DENG Kailiang, ZHAI Guojun, OUYANG Yongzhong, CHEN Xin. Research and Evaluation on Key Technological Target System for Marine and Airborne Gravity Surveys[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(11): 1537-1548.

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