Performance of distributed CFAR test under various clutter amplitudes

We evaluate the performances of several distributed constant false-alarm ra te (CFAR) tests operating in different background clutter conditions. The a nalysis considers the detection of Rayleigh target in various clatters with the possibility of differing clutter power levels in the test cells of dis tributed radars. Numerical results studied for a two-radar system show how the false-alarm rate of the maximum order statistic (MOS) test changes with differences In the clutter power levels of the test cells. The analysis fo r the defection of Rayleigh target In Rayleigh clutter indicates that, with the power levels of differing test cells, the OR fusion rule can be quite competitive with the new normalized test statistic (NTS). However, for the detection of Rayleigh target in Weibull or K-distributed clutter, the resul ts show that NTS outperforms both the OR and the AND rules under the condit ion of large signal-to-clutter power ratio and moderate shape parameter val ues.