repeater jamming

Repeater jamming is a type of electronic countermeasure (ECM) used to degrade the effectiveness of military radar systems. This technique involves hostile jammers introducing additional signals into the radar receiver. The goal is to confuse the radar, making it interpret these false signals as real target echoes.1

Jamming, in general, involves broadcasting a strong signal that overrides or obscures a target signal. In military contexts, it's frequently used to confuse enemy radar or communications. While various jamming techniques exist, many rely on broadcasting a powerful, noise-modulated radio signal on the same frequency as the signal being targeted. Military radar engineers develop methods to counter these jamming efforts and maintain radar functionality.21