Matching pursuits with a wave-based dictionary

Author

Mcclure, Mark R. ; Carin, Lawrence

Author_Institution

Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA

Volume

45

Issue

12

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

2912

Lastpage

2927

Abstract

The method of matching pursuits utilizes a nonlinear iterative procedure to project a given waveform onto a particular dictionary. For scattering problems, the most appropriate dictionary is composed of wave objects that are consistent with the underlying wave phenomenology. A signal scattered from most targets of interest can be decomposed in terms of wavefronts, resonances, and chirps-and each of these subclasses can be further subdivided based on characteristic wave physics. Here, we investigate the efficacy of applying the method of matching pursuits with a wave-based dictionary for the processing of scattering data. The performance of this algorithm is examined for scattering data with and without additive noise

Keywords

electromagnetic wave scattering; iterative methods; radar cross-sections; radar signal processing; additive noise; chirps; matching pursuits; nonlinear iterative procedure; performance; radar; resonances; scattering problems; wave objects; wave-based dictionary; wavefronts; Chirp; Dictionaries; Diffraction; Dispersion; Doppler radar; Frequency; Matching pursuit algorithms; Radar scattering; Resonance; Signal processing algorithms;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.650250

Filename

650250