摘要
利用离散小波框架(DWF)结合非线性软阈值方法对瞬态雷达反射回波信号进行去噪处理。通过对模拟雷达散射回波信号去噪,并与传统的傅立叶方法,样条拟合,标准正交Daubechies小波基,sym4小波基,双正交bior2.2小波基法进行了数据对比,表明该方法对瞬态非平稳信号去噪效果更为明显。
This paper uses the digital wavelet frame (DWF) combined with nonlinear soft-thresholding method to denoise the transient scatter response signal. Through simulate the radar scatter response signal,compared to the traditional Fourier truncation,spline fitting,standardOrthogonal Daubechies wavelet bases,sym4 wavelet base,biorthogonal bior(2,2) wavelet base.The result shows this method is better in denoising the transient unplacidity signals.
出处
《安徽大学学报（自然科学版）》
CAS
2003年第1期60-64,共5页
Journal of Anhui University(Natural Science Edition)
基金
国家自然科学基金重点资助项目(69971001)
