Photonics-Based Radar Compound Coherent Jamming Generator

A photonics-based wideband radar frequency-shifting and interrupted-sampling repeater compound coherent jamming signal generation scheme is proposed. The frequency-shifting jamming (FSJ) is achieved through Serrodyne modulation, while the interrupted-sampling repeater jamming (ISRJ) is realized by period pulse signal sampling. We have experimentally verified the generation of FSJ and ISRJ compound jamming signals with pulse duty cycle of 50% and 20%, sampling frequency of 2 MHz and 4 MHz, and frequency shift of 3 MHz and 5 MHz. After pulse compression, more than 10 false targets are generated, demonstrating good jamming effect. The scheme has a simple structure and no electrical frequency-dependent component, which is suitable for the needs of future electronic warfare.