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Impulses that exist in the nature o r are artificial may severely decrease the performance of any radio system including communication and interception receivers and radars. This paper investigates impulse detection in receivers that can have either a single antenna or a n antenna array. The proposed detector uses either a backward or forward outlier search strategy and assumes zero mean signals and spatially and temporally white backgrnund noise. Signal need not t o be weak, i.e., signal-to-noise ratio may be large and the methods still workr. The backward method uses all the data in an initial step whereas the forward method uses smaller;(hopefully) clean set in an initial step. The fonvard method is expected to perform better: Simulations confirm this expectation. Indeed, the used fonvard method can detect outliers even iftheir contamination exceeds 90 % of all the samples.

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