Title :
A hyper harmonic resolution by using the discrete prolate spheroidal wave functions
Author :
Khenchaf, A. ; Saillard, J.
Author_Institution :
Inst. de Recherche et d´´Enseignement Superieur aux Tech. de l´´Electron., Nantes, France
Abstract :
Based on the harmonic analysis method, discrete spheroidal wave functions are used to achieve a very high spectral resolution. For an N samples vector of the measured signal, the classical Fourier transform discrimination capability is 1/N, while in the method proposed, for the same number of samples, the discrimination capability might attain the value of 2/P, with P as the dimension of the FFT. Additional comparative study of other classical windows (rectangular, Hamming, and Tseng) is made
Keywords :
electromagnetic wave scattering; fast Fourier transforms; harmonic analysis; wave functions; FFT; Fourier transform discrimination; Hamming window; Tseng window; discrete prolate spheroidal wave functions; harmonic analysis method; measured signal; point scatterers; rectangular window; spectral resolution; target recognition; vector; Bandwidth; Eigenvalues and eigenfunctions; Fourier transforms; Frequency; Harmonic analysis; Polarization; Radar scattering; Signal resolution; Target recognition; Wave functions;
Conference_Titel :
Radar Conference, 1990., Record of the IEEE 1990 International
Conference_Location :
Arlington, VA
DOI :
10.1109/RADAR.1990.201118
