Order Statistic and Maximum Likelihood Distributed CFAR Detectors in Weibull Background

Non-Rayleigh clutter statistics result when sea or ground are viewed with resolution radars (pulse width < 0.5 mus) at low grazing angle (phi < 5deg). In this paper, we consider the problem of maximum likelihood (ML) and order statistic (OS) constant false alarm rate in distributed detection systems using fuzzy fusion rules in Weibull clutter with a shape parameter known. We derive the appropriate membership functions for ML and OS as local detectors and use different fuzzy rules in fusion centre. Simulation for the "algebraic product", "algebraic sum", "union", "intersection" fuzzy fusion rules are conducted to assess the detection performance and the results are presented and discussed.