Title :
Analysis of electromagnetic backscattering data using wavelets
Author :
Kim, H. ; Ling Hao
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
A wavelet analysis of backscattering data is presented. In contrast to the RWFT (running window Fourier transform), the wavelet transform technique has a multiresolution property through the use of multiscale windows. Therefore, multiscale events in the frequency data can be more effectively resolved in the time-frequency plane by the wavelet transform. Results for an open-ended waveguide cavity and a dispersive plasma cylinder are presented. From the two examples considered, it is observed that the wavelet transform provides good resolution in simultaneously identifying the scattering centers and resolving the resonant phenomena of the target, while adequately describing the dispersive scattering mechanisms in the intermediate region.<>
Keywords :
backscatter; electromagnetic wave propagation in plasma; electromagnetic wave scattering; waveguide theory; wavelet transforms; dispersive plasma cylinder; dispersive scattering mechanisms; electromagnetic backscattering; multiresolution property; multiscale events; multiscale windows; open-ended waveguide cavity; resonant phenomena; time-frequency plane; wavelet analysis; wavelet transform; Backscatter; Data analysis; Dispersion; Electromagnetic analysis; Electromagnetic scattering; Electromagnetic waveguides; Fourier transforms; Time frequency analysis; Wavelet analysis; Wavelet transforms;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221707
