ASA 124th Meeting New Orleans 1992 October

4aUW13. Fourth-order cumulants and spectra of acoustic data.

Roger F. Dwyer

Naval Undersea Warfare Ctr., Code 3331, New London, CT 06320

In a recent paper [Dwyer, J. Acoust. Soc. Am. 90, 918--926 (1991)] properties of the Fourier transform of a special case of the fourth-order cumulant were discussed and the results of a transmit--receive experiment presented. The data from this experiment have now been analyzed for more general cases of the fourth-order cumulant and its corresponding spectrum. The paper reviews theoretical properties of fourth-order cumulants and spectra, discusses applications in underwater acoustics, and presents results from acoustical experiments and simulations.