物探与化探2018，Vol.42Issue(1)：220-224,5.DOI:10.11720/wtyht.2018.1.28
探地雷达信号消噪中的时频谱分解重排算法
Research on denoising of ground penetrating radar signals using the time-frequency spectral decomposition reassignment algorithm
摘要
Abstract
In order to improve the denoising effect of the current time frequency (TF) method on ground penetrating radar signals,the authors accomplished the denoising m the TF domain by using the spectral decomposition reassignment algorithm.The application of a window function in traditional TF transforms to dividing the signal causes a blurred TF distribution,i.e.,TF energies of the signal are distributed around the true instantaneous frequencies,which makes it easier to damage useful information of the signal during denosing if the threshold is inappropriate.The spectral decomposition reassignment algorithm is capable of making energy of the signal more concentrated around the true instantaneous frequencies by relocating TF result of the signal,thus obtaining higher TF resolution and reducing the opportunity of damaging useful information of the signal during denosing.Processing results of both synthetic and real data suggest that the denoising effect of the reassignment method is better than that of traditional TF including Gabor transform methods.关键词
时频谱分解重排算法/探地雷达/短时傅里叶变换/消嗓/瞬时频率Key words
spectral decomposition reassignment algorithm/ground penetrating radar/short time Fourier transform/denoising/instantaneous frequency分类
天文与地球科学引用本文复制引用
吴楠,吴舰,吴志坚..探地雷达信号消噪中的时频谱分解重排算法[J].物探与化探,2018,42(1):220-224,5.基金项目
贵州省科技厅科技支撑计划项目(黔科合SY[2010]3023号) （黔科合SY[2010]3023号）
