国家现代测绘基准体系基础设施建设一期工程绝对重力观测

摘要

This paper introduces the first phase of the project of the construction of the national infrastructure absolute gravity observation modern surveying benchmark system in 2013-2014 by A10/028 and FG5/214 gravimeters.The measured results are analyzed,showing that the absolute gravity observation precision and difference is 5 μGal,meeting the requirements of high precision gravity base construction.The results also show that A10/028 is adaptable to field observations of gravity changes,that FG5/214 signal acquisition has advantages,and that using two sets of absolute gravimeter data in the same periodim proves the accuracy of observation results.%介绍了2013～2014年使用A10/028和FG5/214两台绝对重力仪在国家现代测绘基准体系基础设施建设一期工程中绝对重力观测的情况,并对观测结果进行分析.结果显示,两台绝对重力仪观测结果精度及较差都在5 μGal以内,满足高精度重力基准建设的技术要求;A10/028具有一定的野外观测适应性,FGS/214对重力细微变化信号的捕获具有优势,两台绝对重力仪同期观测对于提高观测结果的可靠性和准确度具有积极的作用.