Comparison and Simulation of Linear/LOG CFAR Algorithms

An intelligent CFAR (constant false alarm rate) circuit can effectively combine the advantages of linear and LOG CFAR circuits by switching from linear to LOG or vice-versa and also deciding the algorithm that suits a particular environment best based on various parameters such as clutter, distance, optimum number of range cells etc automatically. This paper presents a comprehensive tabulation of results which can be used to implement the intelligent CFAR circuit The MATLAB simulations were performed for seven algorithms both LOG and linear for all possible environments (homogeneous/non-homogeneous). They were done for various sizes of range cells (16, 32 and 64). They were also simulated for different clutter environments such as Rayleigh, Weibull and log-normal. The results including the number of targets, no of false alarms, no of missed targets along with the multiplication factors were tabulated for 1000 iterations