摘要
惯性定位精度主要取决于惯性元器件的性能和对测线土地球重力场的模型逼近精度。重力场误差(即扰动重力矢量δg)足惯性系统(INS、ISS)的一项主要误差源。本文给出了两个研究δg影响的方法,讨论了不同应用环境中由δg直接及间接引起的各项定位误差的大小及变化规律。最后,讨论了减弱重力场误差影响、提高导航定位精度的几个方法。
Inertial positioning accuracy is primarily dependent on the performance of the system hardware and the quality of the gravity field modelling.The gravity disturbance vector is a most important source of errors.This paper presents two methods of evaluating gravity -induced errors,from which the direct gravity—induced effects and the indirect ones are studied.Finally the -related error reduction approa ches for improving the inertial positions are outlined.
出处
《中国惯性技术学报》
EI
CSCD
1991年第2期50-55,31,共7页
Journal of Chinese Inertial Technology
基金
国家教委博士点基金
