A Distributed OS-CFAR Detection Method under Log-Normal Clutter

To enhance radar performance in target detection, distributed CFAR detection systems are gaining increasing attention and application. Such systems effectively extend detection range, improve detection probability, and strengthen anti-interference capabilities. However, existing research has primarily focused on distributed CFAR detection under Gaussian clutter environments, with relatively limited exploration of non-Gaussian clutter environments such as log-normal clutter. To address these issues, this paper proposes a distributed OS-CFAR detection method suitable for log-normal clutter backgrounds. First, for the simple case of single-detector detection, an OS-CFAR detection method suitable for log-normal clutter backgrounds is derived. This is then extended to distributed detection systems composed of multiple detectors, yielding the corresponding distributed OS-CFAR detection method. Finally, simulation experiments are conducted to analyze the performance of the detection method, confirming that the distributed OS-CFAR detection method exhibits superior detection performance under log-normal clutter backgrounds.