物探与化探2024，Vol.48Issue(4)：1018-1024,7.DOI:10.11720/wtyht.2024.1377
DGS-AT1M型海洋重力仪静态观测结果分析与评估
Analysis and assessment of static measurement results from a DGS-AT1M marine gravimeter
摘要
Abstract
The performance of marine gravimeters directly determines the quality of measured data,while their stability serves as a crit-ical indicator reflecting their performance.Based on the static test conducted using a DGS-AT1M marine gravimeter,this study ana-lyzed the dominant factors affecting the measured results in the static test.It explored the method and process for stability assessment in the static test,analyzing and assessing the stability of this marine gravimeter.First,this study calculated the changes in the theoretical gravity value of earth tide,correcting the earth tide effect on static measurement results.Then,this study analyzed the single-day data and the overall data.Finally,based on the stability assessment process,this study calculated the zero-drift rate,monthly drift,and ac-curacy of the marine gravimeter using the residual measured values after earth tide correction.The calculation results show that this ma-rine gravimeter yielded a monthly drift value of-1.020 mGal,and high zero drift linearity at a drift rate of-0.034 mGal/day.This marine gravimeter exhibited a measurement accuracy of 0.085 mGal,aligning with the gravity survey specifications.Therefore,it can be applied to high-precision marine gravity surveys.关键词
DGS-AT1M型海洋重力仪/静态观测/固体潮/稳定性/零点漂移/测量准确度Key words
DGS-AT1M marine gravimeter/static measurement/earth tide/stability/zero drift/measurement accuracy分类
天文与地球科学引用本文复制引用
张彬彬,万丽丽..DGS-AT1M型海洋重力仪静态观测结果分析与评估[J].物探与化探,2024,48(4):1018-1024,7.基金项目
国家自然科学基金项目(42249902) （42249902）
