永兴岛基准站的重复绝对重力测量研究  

Repeated absolute gravity surveying at Yongxing Island base station

作　　者：纪立东 张宏伟 肖凡 王应建 李建国 夏晨 

机构地区：[1]61365部队

出　　处：《测绘科学》2014年第2期11-13,36,共4页Science of Surveying and Mapping

基　　金：国家自然科学基金(41174026)

摘　　要：本文主要描述了永兴岛基准站绝对重力测量的实施过程，重力值的计算原理及参数改正，重力垂直梯度测定方法、计算模型及示意图，并将永兴岛基准站历次的测量结果进行了比对分析，结果表明从1999年～2010年该站的绝对重力值整体变化趋势是减小的，变化量为16．2×10^-8 m·s-2。This paper introduced the implementation process of measuring at Yongxing Island base station, the determination of gravity and corrections, determination of the vertical gradient of gravity, formulas and schematic diagram. After the previous measurement results were compared, the result showed that the trend of the gravity value from 1999-2010 was decreasing, felled by 16.2×10^-8 m·s-2.

关 键 词：绝对重力测量 FG5绝对重力仪 永兴岛基准站 重力垂直梯度 

分 类 号：P223.1[天文地球—大地测量学与测量工程]