光纤陀螺组合的多尺度多传感器数据融合  

Multi-scale multi-sensor data fusion of fiber optic gyroscope combination

作　　者：刘颖[1] 蔡秀梅[1] 刘瑾[1] 

机构地区：[1]西安邮电大学自动化学院,陕西西安710121

出　　处：《西安邮电大学学报》2015年第1期75-79,共5页Journal of Xi’an University of Posts and Telecommunications

基　　金：陕西省教育厅科学研究计划资助项目(2013JK0993;2013JK0197);西安邮电大学青年教师科研基金资助项目(ZL2013-30)

摘　　要：针对四个光纤陀螺的冗余组合,提出一种多尺度多传感器数据融合算法。该算法对4个光纤陀螺的冗余组合数据进行预处理,并对各个尺度上小波变换的系数采用自适应权值的方法进行数据融合,最后采用合适阈值和阈值函数对融合后的小波系数进行重构。仿真结果表明,该算法可以有效提高光纤陀螺组合系统的可靠性和精度,融合后的光纤陀螺组合精度可以提高一个数量级。A multi-scale and multi-sensor data fusion algorithm is designed for redundant fiber optic gyroscope combination. Four groups of virtual sensor data are produced in three directions of east, north and top, based on the four fiber optic gyroscopes data preprocessing. There are four sets of data in each direction. A wavelet transform are done on data from each group. Data fusion using adaptive weights is carried out in the wavelet coefficients in every scale. Wavelet coefficients are reconstructed by using the right threshold and threshold function after the data fusion. Experimental results show that this scheme can effectively improve the precision and reliability of fiber optic gyroscope combined system. The precision of the three directions can be improved by one order in magnitude.

关 键 词：光纤陀螺 冗余设计 小波去噪 数据融合 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]