This article is not only intended to brush up the reader’s knowledge on the subject but also presents latest scientific findings. The probability of intercept for bursts and frequency hop signals by means of search receivers or scanning direction finders is calculated on a general basis and with particular attention to multichannel receivers and overlapping search and hop frequency ranges. The article also deals in detail with the timing of the receiver sequence coinciding with the hopper sequence*. For the sake of simplicity, ideal conditions are assumed.
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