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7 March 2019 Investigation on the dynamic characteristics of CG-6 relative gravimeter for the micro-gravity network
Shan-liang Liu, Jin-yang Feng, Qi-yu Wang, Duo-wu Su, Chun-jian Li, Shu-qing Wu
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Proceedings Volume 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation; 110531V (2019) https://doi.org/10.1117/12.2511622
Event: 10th International Symposium on Precision Engineering Measurements and Instrumentation (ISPEMI 2018), 2018, Kunming, China
Abstract
CG-6 is a new generation of full-automatic relative gravimeter produced by Scintrex Company, Canada. It can be used to measure the vertical gravity gradient. This paper mainly addresses dynamic precision of CG-6 relative gravimeters in the vertical gravity gradient measurements during the Comparison of Absolute Gravimeters. This paper analyzes the repeatability and consistency of 4 CG-6 gravimeters in dynamic test. We process the static and dynamic experimental data of 4 CG-6 gravimeters. Results show that the dynamic precision of CG-6 gravimeters in vertical gravity gradient measurements is better than 3μGal1. The static drift rates are all less than 3μGal ∙ h-1. One of the CG-6 gravimeters has been used to monitor the NIM (National Institute of Metrology, China) local gravity network, especially in measuring the vertical gravity gradients. This allows for an evaluation of the overall dynamic performance of CG-6 gravimeters and their stability concerning highly precise determination of vertical gravity gradients for the micro-gravity network.
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Shan-liang Liu, Jin-yang Feng, Qi-yu Wang, Duo-wu Su, Chun-jian Li, and Shu-qing Wu "Investigation on the dynamic characteristics of CG-6 relative gravimeter for the micro-gravity network", Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 110531V (7 March 2019); https://doi.org/10.1117/12.2511622
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