摘要
介绍了小波变换的原理和基于门限值的小波去噪方法,讨论了傅里叶分析与小波分析方法.针对模拟产生信号和试验测得的导弹含噪声回波信号分别用FFT分析方法和小波分析方法进行信号噪声消除.仿真结果表明,基于小波变换的去噪方法与传统的傅里叶分析方法相比,具有较高的精度和较快的速度.
Wavelet transform principle and wavelet coefficient threshold denoising method are briefly introduced in this paper. Next FFT method and the wavelet transform method are discussed. Both simulated signal and tested radio fuze signal are denoised by the FFT method and wavelet transform method. Simulation results show that the wavelet coefficient threshold denoising method has higher precision and faster speed than the FFT method.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2005年第3期256-259,共4页
Transactions of Beijing Institute of Technology
关键词
小波变换
无线电引信
信号处理
wavelet transform(WT)
radio fuze
signal processing
