摘要
探讨了多小波预处理方法对信号去噪性能的影响,选取不同的多小波函数和不同的预处理方法,利用改进的阈值函数,对实际的探地雷达(GPR)图像进行阈值化处理和对比分析,结果表明选取合适的预处理方法,采用DGHM多小波对GPR图象去噪可获得比其他方法更好的效果.
The influence on signals de-noising with the multiwavelets pre-processing methods is discussed and investigated in this paper. The de-noising effect of ground penetrating radar (GPR) image with multiwavelets based on different pre-processing methods and an improved thresholding function is analyzed and compared. The results of simulation experiment indicate that the de-noising effect of GPR image with DGHM multiwavelet based on proper pre-processing methods is better than those traditional methods.
出处
《地球物理学进展》
CSCD
北大核心
2005年第2期469-475,共7页
Progress in Geophysics
基金
教育部博士基金(20030290003)
山东省自然科学基金(Y2002G08)资助.
关键词
多小波
探地雷达(GPR)
预处理
性能分析
multiwavelet, ground penetrating radar(GPR), pre-processing, performance analysis
