惯性测量中计算重力元素的新方法

A Inertial Gravity Vector Real-time Estimation Me thood

本文首先介绍了用惯性技术测定重力元素的基本原理,并分析了惯性测量系统目前采用的重力元素计算方法的优缺点;并在此基础上提出了一个计算重力元素的新方法。理论分析及防真结果均表明:相对于目前所用方法而言,本文给出的方法不仅计算工作量少、内存量小,而且求得的结果精度高。

Starting with the intoduction of the principle in inertical gravity vector determination, the present real-time estimation methods are reviewed. Then a new anomalous gravity vector estimation method is given . It is shown that concerning the accuray, computation and memory requirements the method proposed in the paper seems to be superior to the present used methods especially in areas where the change in δg is large.