| 基于高灵敏度检波器数据的分频匹配滤波方法及其应用(英文) |
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| 引用本文： | 沈洪垒,田钢,石战结.基于高灵敏度检波器数据的分频匹配滤波方法及其应用(英文)[J].应用地球物理,2013,10(1):15-24. |
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| 作者姓名： | 沈洪垒 田钢 石战结 |
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| 作者单位： | 浙江大学地球科学系;浙江大学文化遗产研究院 |
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| 基金项目： | financially supported by the National Natural Science Foundation of China(No.41104072);College Students Science and Technology Innovation Activity Plan in Zhejiang Province(No. 2012R401214) |
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| 摘 要： | 具有较高自然频率的高灵敏度检波器在采集数据时可以通过压制低频信号来相对提高高频能量,但这也造成了其低频响应差的问题,如果将高灵敏度数据与常规数据进行优势组合,就可以达到拓宽频带的目的。为此,本文提出分频段匹配滤波的方法,即在保持常规数据低频优势的前提下,对其高频端进行匹配滤波,实现不同频带范围内的优势互补,从而改善地震记录。通过引入不同主频的雷克子波模拟得到具有常规数据和高灵敏度数据特点的理论模型,论证了分频匹配滤波方法的可行性。在对野外单炮地震记录处理中发现,分频匹配滤波方法拓宽了地震记录的有效频带宽度,提高了地震记录的分辨率。
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| 关 键 词： | 高灵敏度 有效带宽 分频匹配 分辨率 |
Partial frequency band match filtering based on high-sensitivity data: method and applications |
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Shen Hong-Lei
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Tian Gang
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Shi Zhan-Jie.Partial frequency band match filtering based on high-sensitivity data: method and applications[J].Applied Geophysics,2013,10(1):15-24. |
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| Authors: | ,
Shen Hong-Lei
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Tian Gang
,
Shi Zhan-Jie |
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| Institution: | 1. Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China
2. Cultural Heritage Research Institute, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | During seismic data acquisition, a high-sensitivity geophone with a high inherent frequency can increase high frequency energy by suppressing low frequency signals. This could cause a worse response at low frequencies. If the advantages of high-sensitivity data and conventional data are combined, the effective bandwidth will be broadened. Considering this, we propose a partial frequency band match filtering method which can combine the advantages of both high frequency and conventional frequency ranges. By introducing Ricker wavelets with different dominant frequencies and amplitudes, we established a theoretical model which possesses characteristics of both types of seismic data and demonstrates the feasibility of the partial frequency band match filtering method. A test using single shot records shows the effectiveness of this method for widening the effective frequency band. |
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| Keywords: | High-sensitivity effective bandwidth partial frequency band match resolution |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
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