Abstract: 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.

Key words: Signal detection, CASS, LFM, Wigner-Hough transform