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Detection of echoes using time-frequency analysis techniques
IEEE Transactions on Instrumentation and Measurement
Abstraci- The following is a presentation of echo detection techniques based on time-frequency signal analysis for the measuring of thickness in thin multilayer structures. These techniques are shown to provide high-resolution signal characterization in a time-frequency space, and good noise rejection performance. In particular, the Short-Time Fourier Transform, the Gabor expansion, the Cross-Ambiguity Function and the Wigner-Ville Distribution are analyzed and compared with techniques such asdoi:10.1109/19.481308 fatcat:dl4dtmhorvbq3dhd2g4a643dya