Detection of Controlled Accurate Seismic Source Signal Using Wigner-Hough Transformation
详细信息
- 责任者：Liu Xikang (Key Laboratory of Earthquake Prediction ; CEA ; Beijing 100036 ; China) ; Cui Rensheng
- 刊名：Earthquake
- 出版年：2013
- 卷期：33(3)
- 关键词：可控震源 ; vibroseis
- 页码：p.33-42
- 图表：10 illus., 13 refs.
- 分类号：1600
- issnNo：ISSN1000-3274
- isbnNo：CN11-1893/P
摘要
A method for signal detection of controlled accurate seismic source(CASS) with Wigner-Hough transformation is presented in this paper.The vibrant signal radiated by CASS and recorded by instruments at seismic stations is continuous and linearly frequency modulated(LFM).The Wigner-Ville transformation of a LFM signal is a image of time-frequency plane with a line.The Hough transformation may detect lines by integration along with them.The lines in a image become peaks in its Hough transformation image,they indicates the CASS signal existence while in detection of CASS signal.We mainly worked on the problems in applying Wigner-Hough transformation to the detection of CASS signal.The processed result of data from the experiment around Xinfengjiang reservoir in 2009 prove that this method is feasible.