Decentralized CFAR signal detection

Performance of distributed CFAR test under various clutter amplitudes

“…The probability of false alarm expressions for the OR (AND) rule for Rayleigh target in Rayleigh clutter at the ith sensor (P F i ) can be found in [5]. Using this, the total probability of false alarm for the OR and AND rules for a two-sensor system (P F o and P F a ) can be found to be…”

Netted radar Hough detector in randomly arriving impulse interference

“…The usage of the HT in netted radar systems enables to detect very effectively target trajectories in the presence of impulse interference [1,5]. In this paper, two radar systems, decentralized (distributed) and centralized, are developed [6][7][8]12,14,18]. Two different cases for target and trajectory detection with the polar Hough transform are tested in the paper.…”

Performance of distributed CFAR tests in nonhomogeneous background

“…The probability expressions for the OR (AND) rule can be found in [5]. All the tests discussed in this section maintain a constant false alarm even if the ;lei s are not identical for i =1,2.…”

“…(4) can be simplified to yield Assuming a homogeneous reference window for each sensor (notice that sensor to sensor homogeneity is not needed, i.e. Aoi need not be identical for all i), but with identical SNRi's, (5) reduces to where T * is an appropriate threshold.…”

“…Such techniques have been applied to CA-CFAR, adaptive CA-CFAR, and OS-CFAR. Barkat and Varshney [5] considered CA-CFAR detection using multiple sensors and data fusion In their approach, each CA-CFAR detector transmits a binary decision to the fusion center where a final decision based on the AND or the OR counting rule is obtained. They have also addressed the adaptive CA-CFAR detector problem for parallel and tandem distributed networks [6].…”