웨이브릿 변환을 이용한 해양 탄성파탐사 자료의 잡음 감쇠

• 영문명: Noise Attenuation of Marine Seismic Data with a Wavelet Transform
• 발행기관: 한국항해항만학회
• 저자명: 김진후(Jin-Hoo Kim) 김성보(Sung-Bo Kim) 김현도(Hyun-Do Kim)
• 간행물 정보: 『한국항해항만학회 학술대회논문집』2008년도 공동학술대회 지구환경변화와 해양산업의 전망 논문집, 183~184쪽, 전체 2쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2008.06.30

영문 초록

Seismic data is often contaminated with high-energy, spatially aliased noise, which has proven impractical to attenuate using Fourier techniques. Wavelet filtering, however, has proven capable of attacking several types of localized noise simultaneously regardless of their frequencies. In this study a 2-D stationary wavelet transform is used to decompose seismic data into its wavelet components. A threshold is applied to these coefficients to attenuate high amplitude noise, followed by an inverse transform to reconstruct the seismic trace. The stationary wavelet transform minimizes the phase-shift errors induced by thresholding that occur when the conventional discrete wavelet transform is used.

목차

Abstract

1. 서론

2. 2-D 웨이브릿 변환

3. 탄성파 자료의 잡음 감쇠

4. 결론

참고문헌

키워드

해양 탄성파탐사 웨이브릿 변환 잡음 감쇠 이산 웨이브릿 변환 Marine seismic survey Wavelet tranform Noise Attenuation DWT