摘要
利用Ｄｅｂｅｃｈｉｅｓ 正交小波基，经过多尺度变换能够将一个序列分解成平滑的基本趋势序列和局部的变化细节序列。本文借助多尺度信号分解理论，提出了一种基于小波分析的信号特征提取算法。仿真结果表明利用该算法能够有效地对信号进行趋势估计。最后，本文将该算法应用于液浮陀螺移信号的试验建模中，实现了陀螺漂移信号的趋势项提取。
Based on multiscale analysis,a series could be divided into a smooth trend and a local detail by using Debechies's orthonormal wavelet basis.An algortim of signal eature extraction is presented based on Multiscale theory in this paper.The simulation results indicate that this approach is feasible in effecticely estimating the sigmal's trend.At last,this approach is applied to model the gyro's drift,and the trend of a gyro's drift extracted successfully.
出处
《中国惯性技术学报》
EI
CSCD
1999年第4期59-61,70,共4页
Journal of Chinese Inertial Technology
关键词
小波分析
多分辨分析
小波分解
特征提取
wavelet analysis
multiresolution analysis
wavelet decomposition
feature extraction
