Effects of eletronic interference on the signal/noise relationship and its impact on the probability of detecting radar

Abstract

It is known that, with the acquisition of the electronic interferer SkyShield, the Brazilian Air Force has invested in the academic and operational training of its military in Electronic Warfare (EW). Part of this effort is aimed at understanding the reaction of radar detection systems to different types of interference. In this context, this article sought to exploit EW concepts to perform basic simulations of the behavior of a generic radar under the influence of interference. For this, the variation of the signal-to-noise ratio was considered as a function of an external noise at the output of the receiver of a radar (jamming) and its direct effects on the curve of probability of detection, that is, the operational capacity of the radar. The improvement and the correct application of this knowledge will allow that, theoretically, the expected effects of an interference in a detection system can be estimated.