Radar jamming and deception

Radar jamming and deception is a form of electronic countermeasures (ECMs) that intentionally sends out radio frequency signals to interfere with the operation of radar by saturating its receiver with noise or false information.

Electronic jamming works by transmitting additional radio signals towards enemy receivers, making it difficult to detect real target signals, or take advantage of known behaviors of automated systems like radar lock-on to confuse the system.

Various Electronic counter-countermeasures (ECCMs) can sometimes help radar operators maintain target detection despite jamming.

Inadvertent mechanical jamming is fairly common because it is indiscriminate and affects any nearby radars, hostile or not.

Electronic jamming can also be inadvertently caused by friendly sources, usually powerful EW platforms operating within range of the affected radar.

[citation needed] While not usually caused by the enemy, interference can greatly impede the ability of an operator to track.

This will cause "running rabbits", a visual phenomenon that can severely clutter up a radar display scope with useless data.

Similar to human ECCM techniques, bats are found to change their emission lengths to defeat jamming.