Non-Rayleigh clutter statistics result when sea or ground clutter are viewe
d with resolution radars (pulse widh < 0.5 mu s) at low grazing angle (phi
< 5 degrees). In this paper, we consider the problem of Clutter Map Constan
t False Alarm Rate detection (CMAP-CFAR) in Weibull distribution with a sha
pe parameter known. The target is assumed to be fluctuating according to Sw
erling I model. Closed-form expressions for the probabilities of detection
and false alarm in terms of shape and scale parameters are determined and t
he performance of the system is investigated and analyzed. (C) 2000 Elsevie
r Science B.V. All rights reserved.