用信号处理技术及传播理论还原雷声频谱

欧阳玉花?; 袁萍; 贾向东; 王小云; 薛思敏

doi:10.7498/aps.62.084303

物理学报

用信号处理技术及传播理论还原雷声频谱

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欧阳玉花?, 袁萍, 贾向东, 王小云, 薛思敏. 2013: 用信号处理技术及传播理论还原雷声频谱, 物理学报, null(8): 084303. doi: 10.7498/aps.62.084303

引用本文:

欧阳玉花?, 袁萍, 贾向东, 王小云, 薛思敏. 2013: 用信号处理技术及传播理论还原雷声频谱, 物理学报, null(8): 084303. doi: 10.7498/aps.62.084303

2013: Thunder acoustic spectrum obtained by using digital signal processing and propagation effects?, Acta Physica Sinica, null(8): 084303. doi: 10.7498/aps.62.084303

Citation:

2013: Thunder acoustic spectrum obtained by using digital signal processing and propagation effects?, Acta Physica Sinica, null(8): 084303. doi: 10.7498/aps.62.084303

用信号处理技术及传播理论还原雷声频谱

兰州交通大学数理学院,兰州 730070
西北师范大学物理与电子工程学院,兰州 730070
西北师范大学计算机科学与工程学院,兰州 730070

Thunder acoustic spectrum obtained by using digital signal processing and propagation effects?

摘要: 以往关于雷声的研究都限于观测点雷声频域范围的探讨,由于噪音和衰减因素的影响,观测点的雷声频谱有很大失真.针对在兰州地区观测的一次雷暴过程中的雷声信号,利用数字信号处理技术,由观测点处的雷声音频信号得到频率谱,并对雷声频谱进行噪音分析;然后结合声音在大气中传播的衰减理论,分析了不同大气环境对声吸收的影响,并推算出了声源附近的雷声频率谱.
- 雷声频谱 /
- 信号处理 /
- 传播理论 /
- 峰值频率
Abstract: @@@@There are a few references on thunder at present, moreover they are all about thunder frequency spectrum at observation location. However, thunder frequency spectrum in observation location is a distorted signal because of noises and sound attenuation effects. In this paper, thunder signal from lightning discharge channels is obtained in Lanzhou of China. By using digital filter and Fourier transform, thunder frequency spectrum at the observation location is gained. Then, thunder frequency spectrum near lightning discharge channel is computed with the theory of sound propagation effects.

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用信号处理技术及传播理论还原雷声频谱

兰州交通大学数理学院,兰州 730070
西北师范大学物理与电子工程学院,兰州 730070
西北师范大学计算机科学与工程学院,兰州 730070

关键词:

摘要: 以往关于雷声的研究都限于观测点雷声频域范围的探讨,由于噪音和衰减因素的影响,观测点的雷声频谱有很大失真.针对在兰州地区观测的一次雷暴过程中的雷声信号,利用数字信号处理技术,由观测点处的雷声音频信号得到频率谱,并对雷声频谱进行噪音分析;然后结合声音在大气中传播的衰减理论,分析了不同大气环境对声吸收的影响,并推算出了声源附近的雷声频率谱.

English Abstract

Thunder acoustic spectrum obtained by using digital signal processing and propagation effects?

兰州交通大学数理学院,兰州 730070
西北师范大学物理与电子工程学院,兰州 730070
西北师范大学计算机科学与工程学院,兰州 730070

Keywords:

Abstract: @@@@There are a few references on thunder at present, moreover they are all about thunder frequency spectrum at observation location. However, thunder frequency spectrum in observation location is a distorted signal because of noises and sound attenuation effects. In this paper, thunder signal from lightning discharge channels is obtained in Lanzhou of China. By using digital filter and Fourier transform, thunder frequency spectrum at the observation location is gained. Then, thunder frequency spectrum near lightning discharge channel is computed with the theory of sound propagation effects.

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用信号处理技术及传播理论还原雷声频谱

Thunder acoustic spectrum obtained by using digital signal processing and propagation effects?

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用信号处理技术及传播理论还原雷声频谱

English Abstract

Thunder acoustic spectrum obtained by using digital signal processing and propagation effects?

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