An Amplitude-Phase Hybrid Modulation Approach for Radar Jamming Based on Dual-Drive Mach–Zehnder Modulator

This paper proposes a novel radar jamming method based on an amplitude-phase hybrid modulation mechanism. Utilizing a dual-drive Mach-Zehnder modulator (DDMZM) for radar signal modulation and interrupted sampling, this approach significantly extends operational bandwidth with simple architecture. The core innovation lies in integrating the single-antenna compatibility of amplitude modulation with the fundamental false target suppression capability of phase modulation, simultaneously eliminating the real-target echo enhancement effect and reducing RF front-end requirements. Furthermore, two novel amplitude-phase sampling coding strategies are proposed to disrupt the periodicity and symmetry of traditional false-target distributions, substantially reducing the probability of jamming detection. Experimental results verify that flexible parameter control generates diverse jamming signal distributions effective against linear frequency modulation (LFM) radar systems. The proposed coding strategies are extendable to other photonic and electronic jamming systems, providing new paradigms for modern cognitive electronic warfare.