Ultrasound Speckle Reduction

after Coded Excitation and Pulse Compression

REC Technique Duplication

Below:  Duplication of Dr. M. L. Oelze's work with the Resolution Enhancement Compression technique.  REC makes use of convolution equivalence in order to make one signal (h1) act like another (h2, which has a larger bandwidth).  The difference in the resulting signals (right, top and bottom) is due to a time delay in the pre-enhanced chirp (vpre).

REC Technique

Below:  Spectra of above signals to show that the resulting signals are, in fact, the same.

REC Technique Frequency Analysis


Photo Gallery

Duplication of REC [3] technique