Multimodal Anti-UAV Detection System and Technology

With the rapid proliferation of civilian and commercial unmanned aerial vehicle technologies，low-altitude airspace security is facing unprecedented challenges. Driven by Anti-UAV defense requirements，multimodal Anti-UAV detection has emerged as a key research direction in this field and has laid an important foundation for academic exchange and technological development. In this context，this paper provides a systematic review of recent research progress in this area. First，it outlines the evolution of Anti-UAV challenges and compares existing technological frameworks. Next，it analyzes advancements in Anti-UAV detection from three perspectives：visual perception，single-sensor systems，and multi-sensor fusion. Subsequently，it comprehensively summarizes mainstream Anti-UAV detection datasets and major international competitions. Finally，the paper offers a forward-looking analysis of future research directions. Aimed at supporting the development of efficient，intelligent，and scalable Anti-UAV systems，this study contributes theoretical and technical insights to promote the continuous improvement of national low-altitude security infrastructure.