Editing Electronic counter-countermeasure (section)

===Sidelobe blanking===
[[Radar jamming]] can be effective from directions other than the direction the radar antenna is currently aimed.  When jamming is strong enough, the radar receiver can detect it from a relatively low gain sidelobe.  The radar, however, will process signals as if they were received in the main lobe.  Therefore, jamming can be seen in directions other than where the jammer is located.  To combat this, an [[omnidirectional antenna]] is used for a comparison signal.  By comparing the signal strength as received by both the omnidirectional and the (directional) main antenna, signals can be identified that are not from the direction of interest.  These signals are then ignored.