The EL/M-2106 ATAR (Advanced Tactical Acquisition Radar) is a solid state L band medium range tactical 3D radar with active electronically scanned array (AESA) in elevation. The radar detects a wide variety of low RCS target such as: low velocity ultra-lights and UAVs. 
The radar can track up to 500 targets simultaneously, has 360° operation and all-weather day and night ability and includes advanced electronic counter-countermeasures (ECCM) to operate in dense hostile electronic warfare environments.
It is a field proven design that has operated in undesirable environments. The range of detection for a fighter aircraft is 70–110 km. It can detect hovering helicopters at a range of 40 km and UAVs at 40–60 km.
Used on the SPYDER air defense system.
- http://www.iai.co.il/2013/34481-41073-en/IAI.aspx ELM-2106 ATAR Medium Range Tactical Air Defense Radar
- "Medium Range 3D Tactical Air Defense Radar EL/M-2106 ATAR" (PDF). Israel Aerospace Industries. Retrieved 30 December 2014.