重力仪小周期项的标定  

On the Calibration of the Small Periodic Terms for Gravimeter

作　　者：江志恒 刘乃苓[1] 

机构地区：[1]国家测绘局测绘科学研究所

出　　处：《测绘科学》1991年第3期22-27,共6页Science of Surveying and Mapping

摘　　要：本文详细地讨论了用基线法标定重力仪小周期(周期小于1mGal=10^(-5)ms^(-2)误差的有关问题,同时指出:按国内现有条件和现行的观测程式难以精确确定小周期误差,借以改正观测值的意义不大,甚至有时还会损害原有的观测精度。Problems about the possibility of calibrating the small periodic error (order lessthan 10^(-5)ms^(-2))are discussed in this paper. The idea is that it is impossible to calibrate the small periodic terms accurately by using the gravimetrie baselines now available in China. Even worse, it may damage the observation' s accuracy when they are introduced in adjustment.

关 键 词：周期项 重力仪 观测值 中误差 精确确定 振幅比 格值函数 观测精度 周期误差 采样间隔 

分 类 号：P2[天文地球—测绘科学与技术]