捷联寻北仪的误差补偿技术及信号处理方法研究  

Error Compensation and Signal Processing in Strapdown North Seeking System

作　　者：刘星桥[1] 任明荣[2] 陈家斌[1] 谢玲[1] 宋春雷[1] 

机构地区：[1]北京理工大学,北京100081 [2]北京工业大学,北京100022

出　　处：《航天控制》2005年第5期9-12,22,共5页Aerospace Control

基　　金：国防预研基金项目:413090503

摘　　要：捷联寻北仪采用中等精度两自由度动力调谐速率陀螺仪,来感测地球自转角速度在两个水平方向的分量,从而确定地理北向。各种干扰的存在会削弱有用信号,从而降低寻北精度。本文分析了陀螺静态及动态漂移误差对寻北精度的影响,提出了有效的误差补偿技术;针对有用信号的特点提出了简单实用的噪声消除法。仿真和试验结果说明,文中所提方法能有效地提高寻北精度。Two-freedom dynamical tuned gyro with moderate accuracy are adopted in strapdown north seeking system which is used to measure two components of the earth angular rate, so that the north direction can be determined. But many disturbances corrupt the useful information and deteriorate the accuracy of the north seeking system. The effect of error to north seeking accuracy is analyzed in this paper and the technology of error compensation is proposed, After analyzing the characteristic of useful signal, this paper also presents a simple and practical denoising method. Simulation and experiment proves that the methods mentioned above can improve the north seeking accuracy greatly.

关 键 词：动力调谐陀螺仪 陀螺漂移 误差补偿 数据滤波 

分 类 号：TN965.6[电子电信—信号与信息处理]