Author
Abstract
The performance of Cell Averaging Constant False Alarm Rate (CA-CFAR) degrades rapidly in nonideal conditions caused by the presence of a strong target signal in one of the reference cells. The Order Statistic-CFAR (OS-CFAR) is used to eliminate the reference cells with a strong input. The performance of the Smallest Of -Order Statistic (SO-OS) detector is evaluated to determine the signal-to-clutter ratio required achieving a particular probability of detection in clutter environments whose amplitude statistics are modeled by the Weibull distribution, and where the clutter dominates receiver noise. The performance is evaluated in both homogeneous and nonhomogeneous clutter. The analysis shows that the SO-OS detector is quite robust against both the interference and multiple target situations.
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