TEKTÜR OLMAYAN WEIBULL DAĞILIMLI ÇEVRESEL YANSIMA ORTAMININ BEKLENTİ ENBÜYÜLTME YÖNTEMİNE DAYALI ANALİZİ
YAŞIN, MUHAMMED HANŞEREF
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In this thesis study, for high resolution CFAR radar systems, Expectation-Maximizaion (EM) method was applied to range heteregenous Weibull clutter to determine homogeneous regions and estimate the parameters of distributions. The number of distribution in range and their ratio, the scale and shape parameter of distributions was assumed to be unknown. Particle Swarm Optimization (PSO) algorithm was used to solve the complex nonlinear equations in EM algorithm. The performance of EM algorithm in terms of, the number of clutter regions on the environment, the ratio of the regions, the number of CFAR reference cells, the value of shape and scale parameters of the distributions, were analysed.