Photonic-Assisted Wideband Radar Jamming Signal Generator With Flexible Tunability

In this paper, a photonic approach for the generation of wideband radar jamming signal with flexible tunability is proposed and experimentally verified. In the experiment, interrupted-sampling jamming, comb spectrum modulation jamming, and compound jamming is established upon the received radar signal, respectively. The jamming effectiveness is evaluated through cross-correlating the radar jamming signal with the received radar signal. The cross-correlation results show that variable number of false targets can be generated based on our proposed scheme and the number of the false targets can reach 40. It is worth to note that our approach solves the issue of power loss in traditional interrupted-sampling jamming. Meanwhile, the low-frequency jamming seed signal used in the experiment is quite easy to obtain in electrical domain. The proposed scheme has a stable, compact, and efficient structure, which meets the requirements of the electronic warfare systems and will get potential applications in future electronic warfare systems.