Volume 32 Issue 1
Feb.  2004
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YAN Shu. The joint time-frequency interpretation of transient sounding signal on the lossy layered earth[J]. COAL GEOLOGY & EXPLORATION, 2004, 32(1): 48-51.
Citation: YAN Shu. The joint time-frequency interpretation of transient sounding signal on the lossy layered earth[J]. COAL GEOLOGY & EXPLORATION, 2004, 32(1): 48-51.

The joint time-frequency interpretation of transient sounding signal on the lossy layered earth

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  • Received Date: July 13, 2003
  • Available Online: March 17, 2023
  • Time-frequency analysis is a powerful tool of signal processing,which has been used successfully in non-stationary signals recently.This paper uses joint time-frequency analysis (JTFA) for processing transient electromagnetic (TEM) field signals that have diffuse feature in geophysical exploration.First, the transient electromagnetic response on the layered earth excited by a step pulse is simulated using digital filtering and Gaver-Stehfest; and then their time-frequency characteristics are investigated with Gabor expansion.The sequences of the earth are distinguished successfully,which provides a new interpreting method for TEM prospecting.

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