捷联惯导系统非线性误差补偿的随机采样法  

A Study on the Random Sampling Method for Compensating the Nonlinear Errors in Inertial Navigation

作　　者：郁光辉[1] 刘晓光[1] 戴亚平[1] 陈家斌[1] 

机构地区：[1]北京理工大学自动控制系,北京100081

出　　处：《北京理工大学学报》2002年第6期722-726,共5页Transactions of Beijing Institute of Technology

基　　金：兵总预研项目

摘　　要：为了补偿由于惯性敏感元件高频振动整流所引起的非线性输出误差,研究一种新的补偿方法——随机采样法.以加速度计为对象,对随机采样法进行描述和分析,并与传统的固定采样频率方法进行了对比.在此基础上,对原随机采样法进行了改进.最后给出了详细的仿真程序和结果.仿真结果表明,新的随机采样法比原方法的精度有明显改善,所引入白噪声的强度更小,但计算负担的增长不是很明显.In order to compensate the nonlinear errors induced by the rectification for high frequency vibrations in the inertial measure unit (IMU), the paper presents a new random sampling method. Taking an accelerometer, as the objective, the paper gives a more detailed description and analysis on the random sampling method, and presents detailed simulation procedures and results. An improved method is proposed aiming at the shortcomings of the original random sampling method. Results of simulation show that the new method causes only a white noise of smaller intensity while the computing load is not much increased.

关 键 词：捷联惯导系统 误差补偿 随机采样法 非线性误差 双速算法 惯性导航系统 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]