Wavelet transform techniques for time varying propagation and scattering characterization

It is shown that linear time varying (LTV) propagation and scattering channels are efficiently characterized by wideband spreading functions that can be estimated using continuous wavelet transforms (CWT). We show that the CWT domain characterization of LTV propagation channels leads naturally to a wavelet domain implementation of maximum likelihood detectors of multi-highlight objects whose echos are distributed in range and time-scale.