| 双密度双树小波变换的闪电信号去噪研究 |
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| 引用本文： | 火元莲,张广庶,吕世华,王彦辉,李亚珺. 双密度双树小波变换的闪电信号去噪研究[J]. 激光与红外, 2013, 43(9): 1076-1079 |
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| 作者姓名： | 火元莲 张广庶 吕世华 王彦辉 李亚珺 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所,甘肃兰州730000;西北师范大学物理与电子工程学院,甘肃兰州730070
2. 中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金重点项目，公益性行业科研专项基金 |
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| 摘 要： | 为了克服噪声对闪电信号数据处理的影响,提出了一种基于双密度双树小波变换的闪电信号去噪方法.采用该方法分别对标准闪电波和实测的闪电信号进行了去噪研究,实验结果表明双密度双树小波变换能够有效滤除闪电信号中的噪声,效果优于传统的小波阈值法,而且比硬件去噪更加经济、方便和实用,值得进一步的推广和应用.
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| 关 键 词： | 双密度双树小波 小波阈值法 闪电信号 去噪 |
Lightning signals denoising with double density dual tree wavelet transform |
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| HUO Yuan-lian , ZHANG Guang-shu , L Shi-Hua , WANG Yan-hui , LI Ya-jun. Lightning signals denoising with double density dual tree wavelet transform[J]. Laser & Infrared, 2013, 43(9): 1076-1079 |
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| Authors: | HUO Yuan-lian ZHANG Guang-shu L Shi-Hua WANG Yan-hui LI Ya-jun |
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| Affiliation: | Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou 730000;Physics and Electronic Engineering College of Northwest Normal University, Lanzhou 730070,China |
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| Abstract: | To alleviate the effect of noise on lightning signal data processing, a denoising method based on Double Density Dual Tree wavelet is proposed. General lightning signal and real lightning signal are denoised with this method respectively. Experiment results show the proposed method can effectively alleviate noise of lightning signal and it is superior to the traditional wavelet threshold. Compared with denoising method based on hardware, the proposed method is more economical, convenient and practical. |
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| Keywords: | double density dual tree wavelet transform wavelet thresholding lightning signal denoising |
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