基于小波能量元激光陀螺漂移信号去噪方法研究  

De-noising method for Ring Laser Gyro Drift signal Based on Wavelet Energy member

作　　者：毛猛[1] 王雪梅[1] 

机构地区：[1]第二炮兵工程学院,西安710025

出　　处：《微计算机信息》2009年第16期266-267,314,共3页Control & Automation

摘　　要：为了减少陀螺仪的误差并提高其精度,需要对陀螺仪误差进行估算与补偿,本文应用Allan方差法对激光陀螺的输出数据进行定性分析,得出激光陀螺所包含的各种误差及其整个噪声统计特性,并且应用基于小波能量元的方法对激光陀螺的漂移输出数据进行处理,结果表明小波能量元的方法可以有效的出量化噪声外的消除激光陀螺的各种噪声。Errors of inertial navigation systems are mainly caused by the errors of the gyros. The evaluation and compensation of errors of gyros is an important way to improve the precision of gyros. In this paper, Allan variance is used to analyze the output of ring laser gyro （RLG） qualitatively, variant kinds of RLG noise and the statistical characters of general noise are identified and ex- pressed by Allan Variance, and the output data of RLG is processed by wavelet energy member. The results show that the variant kinds of RLG noises can be eliminated by wavelet energy member effetely except for quantization noise.

关 键 词：能量元 小波分析 阈值 Allan方差法 随机误差分析 

分 类 号：TJ202[兵器科学与技术—武器系统与运用工程]