Fixed-frequency slice computation of discrete Cohen's bilinear class of time-frequency representations


Ozgen M.

SIGNAL PROCESSING, cilt.80, sa.2, ss.219-230, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 80 Konu: 2
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0165-1684(99)00124-3
  • Dergi Adı: SIGNAL PROCESSING
  • Sayfa Sayıları: ss.219-230

Özet

This communication derives DFT-sample-based discrete formulas directly in the spectral-correlation domain for computing fixed-frequency slices of discrete Cohen's class members with reduced computational cost, both for one-dimensional and multidimensional (specifically two-dimensional (2-D)) finite-extent sequence cases. Frequency domain integral expressions that define discrete representations are discretized to obtain these discrete implementation formulas. 2-D ambiguity function domain kernels are chosen to have separable forms for analytical convenience. Simulations demonstrating the DFT-sample-based computation in particle-location analysis of in-line Fresnel holograms are presented. (C) 2000 Elsevier Science B.V. All rights reserved.