Title :
The K-distribution for modeling the envelope amplitude of a backscattered signal
Author :
Keyes, Tim K. ; Tucker, William T.
Author_Institution :
Corp. Res. & Dev., Gen. Electr. Co., Schenectady, NY, USA
fDate :
7/1/1999 12:00:00 AM
Abstract :
In this paper, we present an application of the K-distribution for modeling the amplitude of a backscattered signal in a nondestructive evaluation (NDE) setting, discuss procedures for resolving well-known computational difficulties associated with obtaining maximum likelihood estimates (MLE), and present a comparison with other candidate models for the distribution of the maximum of an unknown number of independent, identically distributed (iid) random variables.
Keywords :
backscatter; flaw detection; maximum likelihood estimation; ultrasonic materials testing; K-distribution; US testing; backscattered signal; computational difficulties; envelope amplitude; identically distributed random variables; maximum likelihood estimates; nondestructive evaluation; Aerospace engineering; Aerospace materials; Amplitude estimation; Bayesian methods; Distributed computing; Maximum likelihood detection; Maximum likelihood estimation; Random variables; Signal resolution; Statistical distributions;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
