学术论文

      CG-5重力仪的漂移与寿命

      Zero drift of CG-5 gravimeter and its service lifetime

      摘要:
      漂移及其线性度是重力仪最重要的性能指标,在很大程度上决定了其精度和寿命。对14台CG?5重力仪漂移数据的分析表明,多数仪器使用2年后的平均漂移率约在(0.7~1.7)×10-5 m/s2/d之间。以此为基础,结合厂家提供的相关数据,对CG?5重力仪的使用寿命进行了推测。得到北纬40°地区,仪器平均寿命约10年的结论。
      Abstract:
      The zero drift and its linearity are the most important performance indexes of gravimeter and also considerably dominate the instrumental accuracy and lifetime. Based on an analysis of drift data from 14 CG?5 gravimeters, the authors found that the average drift rates of the majority of instruments are between 0.7 and 1.7×10-5 m/s2/day in two years. On such a basis in combination with the relat?ed data provided by manufacturers, the service lifetimes of CG?5 gravimeters have been inferred in this paper. The normal mean opera?tional lifetime seems to be about 10 years in the area of forty degrees north latitude.
      作者: 沈博 [1] 袁尚武 [2] 马玄龙 [3] 郝晓菡 [1]
      Author: SHEN Bo [1] YUAN ShangWu [2] MA XuanLong [3] HAO XiaoHan [1]
      作者单位: 中国地质大学地球物理与空间信息学院,湖北 武汉,430074 河南省地质局第三地质矿产调查院,河南 信阳,464000 湖北省地质局地球物理勘探大队,湖北 武汉,430056
      刊 名: 物探与化探 ISTICPKU
      年,卷(期): 2015, (2)
      分类号: P631.1
      机标分类号: U66 TN7
      在线出版日期: 2015年4月17日