Publications [#339012] of Lawrence Carin

Papers Published

1. Dasgupta, N; Runkle, P; Couchman, L; Carin, L, Dual hidden Markov model for characterizing wavelet coefficients from multi-aspect scattering data, Signal Processing, vol. 81 no. 6 (June, 2001), pp. 1303-1316, Elsevier BV [S0165-1684(00)00262-0], [doi]
   (last updated on 2024/12/31)

   Abstract:
   Angle-dependent scattering (electromagnetic or acoustic) is considered from a general target, for which the scattered signal is a non-stationary function of the target-sensor orientation. A statistical model is presented for the wavelet coefficients of such a signal, in which the angular non-stationarity is characterized by an "outer" hidden Markov model (HMMo). The statistics of the wavelet coefficients, within a state of the outer HMM, are characterized by a second, "inner" HMMi, exploiting the tree structure of the wavelet decomposition. This dual-HMM construct is demonstrated by considering multi-aspect target identification using measured acoustic scattering data. © 2001 Elsevier Science B.V.

   Keywords:
   Electromagnetic wave scattering;Acoustic wave scattering;Markov processes;Mathematical models;Wavelet transforms;Trees (mathematics);