摘要
在强干扰的背景下,利用小波变换,提取出低频的轨道不平顺信号。为了能确切地反映出轨道不平顺信号,分别比较使用了Daubechies类小波,Meyer类小波与谐波小波,并对分析的结果作对比说明。结果表明,谐波小波变换可成功地提取到了轨道不平顺信号。
Accordlng to the characteristics that track irregularity is focus on the low frequency-band, data is reconstructed based on the wavelet transform, and some interferon is removed.In order to guarantee the reliability of the result, the Daubechies, the Meyer and the Harmonic wavelet families are employed to make a compare. The result indicated that the desired track irregularity could be extracted with the help of the hunnonic wavelet function effectively.
出处
《中国测试技术》
2006年第1期62-63,79,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
轨道不平顺
小波变换
谐波小波
微弱信号
Track irregularity
Wavelet transform
Harmonic wavelet
Weak signal
