Abstract
In this paper a new Constant False Alarm Rate detector which is composed of an excision processor and a switching-CFAR detector, in sea environment with K distribution, has been introduced. The new detector is named excision switching CFAR. Performance of EXS-CFAR is derived and compared with a few other detectors such as CA-CFAR, GO-CFAR and SO-CFAR for the Swerling I target model in homogeneous and non-homogenous noise environments such as those with multiple interferences and clutter edges. The results show that EXS-CFAR detectors considerably reduce the problem of excessive false alarm probability near clutter edges while maintaining good performance in other environments. Also, simulation results confirm the gaining an optimum detection threshold in homogenous and non-homogenous radar environments by the mentioned processor.
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