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Application of Single-Frequency Time-Space Filtering Technique for Seismic Ground Roll and Random Noise Attenuation | ||
| فیزیک زمین و فضا | ||
| مقاله 4، دوره 44، شماره 4، دی 1397، صفحه 41-51 اصل مقاله (781.11 K) | ||
| شناسه دیجیتال (DOI): 10.22059/jesphys.2018.249021.1006959 | ||
| نویسنده | ||
| Mohammad Radad* | ||
| Assistant Professor, Department of Petroleum and Geophysics, Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran | ||
| چکیده | ||
| Time-frequency filtering is an acceptable technique for attenuating noise in 2-D (time-space) and 3-D (time-space-space) reflection seismic data. The common approach for this purpose is transforming each seismic signal from 1-D time domain to a 2-D time-frequency domain and then denoising the signal by a designed filter and finally transforming back the filtered signal to original time domain. The technique is efficient for ground roll and also random noise attenuation. However, if we deal with a large data set and a great number of contaminated signals with ground roll noise, a much move consuming time will be required. In this paper, time-frequency filtering is formulated and carried out by a different approach. The data is transformed from original time-space domain into several single-frequency time-space domains, and the filters to reduce noise is designed in the new domains. The transform is easily and completely invertible. The employed time frequency analysis method is a high-resolution version of S-transform. Application to synthetic and real shot gathers confirms the good performance and efficiency of the method for attenuating ground roll noise and random noise. | ||
| کلیدواژه‌ها | ||
| Time-frequency analysis؛ Single-frequency section؛ Filtering؛ Seismic noise | ||
| عنوان مقاله [English] | ||
| Application of Single-Frequency Time-Space Filtering Technique for Seismic Ground Roll and Random Noise Attenuation | ||
| نویسندگان [English] | ||
| Mohammad Radad | ||
| Assistant Professor, Department of Petroleum and Geophysics, Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran | ||
| چکیده [English] | ||
| Time-frequency filtering is an acceptable technique for attenuating noise in 2-D (time-space) and 3-D (time-space-space) reflection seismic data. The common approach for this purpose is transforming each seismic signal from 1-D time domain to a 2-D time-frequency domain and then denoising the signal by a designed filter and finally transforming back the filtered signal to original time domain. The technique is efficient for ground roll and also random noise attenuation. However, if we deal with a large data set and a great number of contaminated signals with ground roll noise, a much move consuming time will be required. In this paper, time-frequency filtering is formulated and carried out by a different approach. The data is transformed from original time-space domain into several single-frequency time-space domains, and the filters to reduce noise is designed in the new domains. The transform is easily and completely invertible. The employed time frequency analysis method is a high-resolution version of S-transform. Application to synthetic and real shot gathers confirms the good performance and efficiency of the method for attenuating ground roll noise and random noise. | ||
| کلیدواژه‌ها [English] | ||
| Time-frequency analysis, Single-frequency section, Filtering, Seismic noise | ||
| مراجع | ||
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