In this paper, analysis of frequency agile radar (FAR) performance in presence of different jamming techniques will be presented. Many performance measures may be used to evaluate radar efficiency such as probability of detection (Pd) for a given probability of false alarm (Pt.), reduction of interference signals, and SNR improvement factor. For the present work, Pd is chosen to evaluate the radar performance in presence of different jamming types. The radar under consideration is assumed to be a search radar, and the jammer is stand off jammer. The probability of detection for frequency agile radar pulse radar at certain Pta will be discussed for the case of presence of only noise and the case of noise and jamming signal. Effect of using frequency agility, as an ECCM technique against the spot and ban-age jamming will be evaluated. Two jamming techniques are proposed for optimum management of jammer power; namely the "partial band jamming" and "linear frequency modulation jamming' will be discussed. Comparison among the effect of
different jamming techniques on the performance of frequency agile radar will be discussed.