Implementation and Assessment of Jammer Effect on FMCW Tracking Radar Ability Based on a New Criterion

The effect of jammers on radars has been assessed on the basis of detection range reduction whereas in a tracking radar, inducing inconsistency in target tracking ability is more important than range reduction. A new criterion known as relative radar functionality destruction time is introduced and defined as the ratio of functionality destruction time of the radar to one period of the jammer, in which the power of the jammer signal and target echo power are considered. In this article first, the jammer effect coefficient is defined as the relative destruction time in terms of jammer to signal power ratio. Next, this criterion is applied in assessing a simple conical scan radar receiver against a conventional jammer (sweep noise jamming). By implementing the structure of a FMCW tracking radar, a simple target based on the DRFM method and one type of jamming against this radar are simultaneously simulated, and the functionality destruction is extracted for different radar parameters. Simulation results demonstrate that this new criterion outperforms its counterparts.