地震学报2012，Vol.34Issue(6)：865-872,8.DOI:10.3969/j.issn.0253-3782.2012.06.013
绝对重力仪测量结果的振动划线处理方法初步研究
Study on vibration scribing algorithm for an absolute gravitational measurement
摘要
Abstract
In view of the vibration error introduced by the measurement of self-developed high-precision absolute gravimeter prototype, this paper presents a new vibration suppression algorithm. The algorithm uses time information of the intersection of a set of parallel lines with the same slope and the vibration curves of reference prism recorded to determine the time displacement coordinates of gravitational acceleration calculations on the falling trajectory. Using the least square method, the absolute gravity value was obtained based on these coordinates. Analysis on the algorithm's applicability to different gravity values and the suppression for different interference noises show that this algorithm can effectively improve system deviation and accuracy of the measurement for the interference with dominant frequency greater than 0. 2 Hz and peak-to-peak values less than 500 counts. Finally, the result from actual experimental data shows that the algorithm has doubled the measurement accuracy and can provide software support for miniaturization and mobile measuring of absolute gravimeters.关键词
绝对重力仪/振动抑制/重力测量Key words
absolute gravimeter/ vibration suppression/ gravity measurement分类
天文与地球科学引用本文复制引用
龙剑锋,黄大伦,滕云田,吴琼,郭欣..绝对重力仪测量结果的振动划线处理方法初步研究[J].地震学报,2012,34(6):865-872,8.基金项目
中国地震局基本科研业务费(DQJB01A02)"高精度绝对重力仪关键技术研究"项目资助. （DQJB01A02）
