نویسندگان
دانشگاه امام حسین
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Presence of interfering signals in the samples used by a cell-averaging CFAR detector for estimation of the noise power can cause a drastic degradation in its performance. For alleviates the problem a detector proposed that excides strong signals before the cell-averaging operation and named Excision-CFAR. This detector suffers almost no degradation in performance, in comparison with a conventional cell-averaging detector, when it operates in an environment of homogeneous noise. In this paper we determine optimal values of excision parameter (β) of Ex-CFAR detector in different values of probability of false alarm. The values are obtained using simulation by MATLAB software. Then by using these values performance of the excision CFAR detector is analyzed in both a benign environment and in an environment of an arbitrary number of interferers in the samples. Then the results obtained from this detector are compared with the results of CA-CFAR detector. Swerling ш case for target fluctuation is used as a model for the received signal and only single pulse detection is considered.
کلیدواژهها [English]
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