REFRACTION WAVE SNR IMPROVEMENT BASED ON SVI METHOD

SHAO Yulan; LI Tanglyu; LIAO Yi; TONG Siyou; WU Zhiqiang

2014 Vol. 30, No. 5

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SHAO Yulan, LI Tanglyu, LIAO Yi, TONG Siyou, WU Zhiqiang. REFRACTION WAVE SNR IMPROVEMENT BASED ON SVI METHOD[J]. Marine Geology Frontiers, 2014, 30(5): 52-57,63.

Citation:

SHAO Yulan, LI Tanglyu, LIAO Yi, TONG Siyou, WU Zhiqiang. REFRACTION WAVE SNR IMPROVEMENT BASED ON SVI METHOD[J]. Marine Geology Frontiers, 2014, 30(5): 52-57,63.

REFRACTION WAVE SNR IMPROVEMENT BASED ON SVI METHOD

1 Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Ocean University of China, Qingdao 266100, China;
2 Qingdao Institute of Marine Geology, Qingdao 266071, China

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Corresponding author: TONG Siyou, tsy@ouc.edu.cn

Received Date: 27 February 2014

Abstract

Abstract

The refraction wave plays an important role in the seismic exploration. However, the amplitude and the signal-to-noise ratio(SNR) of refraction are always low because of many factors, such as near-surface noise and attenuation. Supervirtual refraction interferometry(SVI) was proposed by Bharadwaj, Mallinson, etc (2011) to improve the SNR of refraction. In this article, some experiments were conducted to analyzing the resistance of SVI method to noise and the influence of the numbers of correlation and convolution traces on processing effect. It illustrates that for the data which contain a SNR greater than 0.2, the SNR can be improved a lot after implementing the SVI method as long as the requirement for number of correlation and convolution traces was met.
- supervirtual refraction interferometry /
- head-wave refraction /
- signal-to-noise ratio /
- reciprocal equation