Electronic Countermeasure for OFDM-Based Imaging Passive Radars

Passive radars are notoriously robust to jammer because the receiver location cannot be detected. Furthermore the use of OFDM based signal as reference signal further improve the robustness against jammers. Nevertheless this paper aims at proposing an electronic countermeasure for OFDM-based passive radars. In this paper a target-on-board deception jammer is proposed that aims at protecting the target itself from detection, localization and identification. The proposed system is required to operate in real time, which could be seen as a quite challenging objective. However the recent technological advances make the realization of a system able to sample a broadband signal, modulate it in amplitude and phase and retransmit it with a very short time delay, likely and possible.