Title :
Bispectral analysis of two-dimensional random processes
Author :
Chandran, Vinod ; Elgar, Steve
Author_Institution :
Dept. of Electr. & Comput. Eng., Washington State Univ., Pullman, WA, USA
fDate :
12/1/1990 12:00:00 AM
Abstract :
The extension of bispectral analysis from one-dimensional random processes (e.g. time series) to two-dimensional random processes is presented. Use of the symmetry properties of the bispectrum reduces the number of computations considerably. Numerical simulations demonstrate the ability of two-dimensional bispectral estimation to detect quadratic phase coupling between waves traveling in different directions. By windowing the data, bicoherence leakage can be reduced
Keywords :
random processes; spectral analysis; bicoherence leakage; bispectral analysis; data windowing; harmonic processes; numerical simulations; one-dimensional random processes; quadratic phase coupling; symmetry properties; time series; two-dimensional bispectral estimation; two-dimensional random processes; Analytical models; Computational modeling; Fourier transforms; Information analysis; Leak detection; Multidimensional systems; Numerical simulation; Random processes; Two dimensional displays; Working environment noise;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
