| LCR－G／D重力仪静电反馈装置转换参数的确定 |
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| 引用本文： | 贾民育,孙少安,项爱民.LCR－G／D重力仪静电反馈装置转换参数的确定[J].大地测量与地球动力学,1994(3). |
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| 作者姓名： | 贾民育 孙少安 项爱民 |
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| 作者单位： | 国家地震局地震研究所 |
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| 摘 要： | 装配了静电反馈装置的ＬＣＲ－Ｇ／Ｄ型重力仪是目前世界上观测精度最好的相对重力仪，静电反馈装置的转换参数确定得正确与否是影响观测精度的重要因素之一。本文在研究了转换参数数学模型及精度的基础上，介绍了它的标定方法和计算方法，并根据ＬＣＲ－Ｇ－７９３、Ｇ－８５４两台仪器的标定结果，分析了转换参数的变化特征及影响标定精度的诸多因素，最后提出了标定和使用转换参数的注意事项。
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| 关 键 词： | 静电反馈，转换参数，标定 |
CALIBRATION OF TRANSLATION FACTOR OF THE ELECTROSTATIC FEEDBACK SYSTEM FOR LCR-G/D GRAVIMETERS |
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| Jia Minyu,Sun Shaoan and Xiang Aimin.CALIBRATION OF TRANSLATION FACTOR OF THE ELECTROSTATIC FEEDBACK SYSTEM FOR LCR-G/D GRAVIMETERS[J].Journal of Geodesy and Geodynamics,1994(3). |
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| Authors: | Jia Minyu Sun Shaoan and Xiang Aimin |
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| Abstract: | LaCoste & Romberg(LCR)model G/D grayimeters with electrostatic feedbeck system have the best precision in the world at present time when they are used for relative gravimetry.The calibration of translation factors which translate readings of the feedback system into values of gravity is very important for improving precision of measurements.In this paper,the method of determining the translation factors is reported after deriving mathematical reprasentation of them and studyins precision necessary to calibrate them,and the characteristics of the change of the translation factors with time and causes which can make influence on the precision of the calibration are analysed accordins to the results of the calibration for LCR-G-793 and G-854.Finally,the conclusion calls people's attention to some points when they calibrate and use the translation factors. |
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| Keywords: | electrostatic feedback translation factors calibration |
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