Abstract:Radar countermeasures and counter-countermeasures are significant aspects of modern electronic warfare, representing the electromagnetic battle between opposing forces centered around radar systems. Due to limited resources, a monostatic radar system is insufficient to combat complex electronic interference. The radar network connects multiple radars deployed in different locations to achieve collaborative detection and information fusion for specific areas, offering advantages of comprehensive coverage, complete information acquisition, and high measurement accuracy. More importantly, the radar network offers a systemic advantage against individual jamming platforms through multi-perspective observations and coordinated control. This paper provides a brief overview of the development trends in radar network and analyzes their anti-interference capabilities. Furthermore, the existing methods for countering jamming, deceptive interference, and resource management in networked radar systems are summarized. Finally, the future trajectory of radar networks in combating active interference is discussed.