Title :
Ultrasonic characterization of scattering media by higher order spectra: a cumulant derivation
Author :
Miralles, Ramón ; Vergara, Luis
Author_Institution :
Dept. de Comunicaciones, Univ. Politecnica de Valencia, Spain
Abstract :
We consider a simplified ultrasonic material model and obtain the theoretic third order cumulant. Assuming that the scattering distribution can be modeled with a random variable A˜n, we show the third order cumulants dependence on the probability density function of A˜n. Simulations of the model are also presented in order to validate it and to check the number of points needed in the estimation process
Keywords :
backscatter; higher order statistics; probability; random processes; ultrasonic applications; ultrasonic scattering; backscattering model; cumulant derivation; estimation process; higher order spectra; probability density function; random variable; scattering distribution; scattering media; simplified ultrasonic material model; third order cumulant; ultrasonic characterization; Attenuation; Backscatter; Filtering theory; Probability density function; Rough surfaces; Scattering; Signal processing; Signal to noise ratio; Surface roughness; Transducers;
Conference_Titel :
Higher-Order Statistics, 1999. Proceedings of the IEEE Signal Processing Workshop on
Conference_Location :
Caesarea
Print_ISBN :
0-7695-0140-0
DOI :
10.1109/HOST.1999.778760
