A system for reducing CFAR loss due to sea clutter is disclosed. The
system includes a first channel tuned for CFAR gain in a spatially
correlated background and a second channel tuned for low CFAR loss in
spatially uncorrelated backgrounds. Each of the channels employs a
distribution free CFAR using rank ordered statistics to establish a
constant false alarm rate. The output of each channel is fused by a hit
correlation function and the stream of combined hits is processed by a
target centroiding function.