文章基本信息

标题：Cross-coupling correction for LaCoste & Romberg airborne gravimeter
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作者：Zhongmiao Sun ; Zheren Xia ; Yingchun Li 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2007
卷号：10
期号：3
页码：163-167
DOI：10.1007/s11806-007-0081-5
出版社：Taylor and Francis Ltd
摘要：The cross-coupling corrections for the LaCoste & Romberg airborne gravimeter are computed as a linear combination of 5 so-called cross-coupling monitors. The weight factors (coefficients) determined from marine gravity data by the factory are obviously not optimal for airborne application. These coefficients are recalibrated by minimizing the difference between airborne data and upward continued surface data (external calibration) and by minimizing the errors at line crossings (internal calibration) respectively. An integrating method to recalibrate the above-mentioned coefficients and the beam scale factor simultaneously is also presented. Experimental results show that the systemic errors in the airborne gravity anomalies can be greatly reduced by using any of the recalibrated coefficients. For example, the systemic error is reduced from 4.8 mGal to 1.8 mGal in Datong test.
关键词：airborne gravimetry; cross-coupling correction; airborne gravimeter; systemic error