摘要
本文对惯性测量系统的误差特性进行了理论分析,推导了运动状态下惯性测量系统的误差状态方程,根据系统动态矩阵的特征值分析得出系统误差存在着三种频率振荡,并给出了简化后的误差状态方程和方程的解析解。
This paper analyzes the error characteristics of Inertial Surveying System(ISS) and deduces the error state equation of ISS in motion.The analysis of the eigenvalues of the dynamical matrix of the system indicates that there are oscillations in three freguencies in system errors.The simplified error state equation and its analytic solutions are given,and the Position errors caused by gravity anomaly are discussed.
关键词
惯性测量
误差分析
惯性系统
导航
inertial surveying
error analysis
inertial systems
equations of state
