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^-5m/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。
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^- 5m / s2/ day in two years. On such a basis in combination with the related data provided by manufacturers,the service lifetimes of CG-5 gravimeters have been inferred in this paper. The normal mean operational lifetime seems to be about 10 years in the area of forty degrees north latitude.
出处
《物探与化探》
CAS
CSCD
2015年第2期383-386,共4页
Geophysical and Geochemical Exploration
关键词
CG-5重力仪
漂移
使用寿命
仪器性能
CG-5 gravimeter
drift
service lifetime
instrument performance
