OVERVIEW: The BIG FRED aka SNAR-10 aka 1RL232, aka Leopard  is a land based short-range, 2-D, short pulse-Doppler, battlefield surveillance radar operating in the K band (NATO).

DETAILS: The  BIG FRED is a ground-based air surveillance and target acquisition radar intended It is designed to locate stationary and moving targets at the forward edge of the battle
area.
The radar works as either a pulse radar or a Doppler radar, the operator making the selection. In the pulse mode it is impossible to distinguish between stationary and moving targets. To detect moving objects, especially beyond the forward line of troops, the Doppler mode is required. If the entire battlefield is to be searched for targets the sector-search mode is used. The revolving radar beam is activated and this then rotates in the fixed sector of exactly 26.4º. In this mode the operator can make use of all the radar's built-in features, including the elevation search mode.

Specifications:

Frequency (active): 		 34.55- 35.25 GHzHz (K Band (NATO) Ka Band (IEEE)
Power output: 		14-70 kW
PRF:			2540 Hz > 13nm range
			4410 Hz - up to 14 nm range
Pulsewidth: 		?? µs	
Range Accuracy:		10 meters (range); 2 mils (azimuth) 
Range: 	 		14 nm max (ground target); 22 nm (water target)
Emplacement/Displacement:	20 min (unprepared position); 5 min (prepared position)
			                 					

 NOTES: IOC  1975.  The radare is mounted in a armored vehicle. 


SOURCES:  Janes Radar and Electronic Warfare Systems, 2002-03, "SNAR-10 surveillance radar", 30 November 2001; P-15; US Army. (n.d.). SNAR-10 (Big Fred) Russian Battlefield Surveillance Radar. https://odin.tradoc.army.mil/WEG/Asset/SNAR-10_