OVERVIEW:  The  Cyrano II bis aka DRAC-37B radar is an  airborne multimode (air-to-air and ground mapping)  medium-range, fire-control  radar operating in the NATO  "I"  (IEEE X ) band.

DETAILS: 

The Cyrano II  radar is a  mutimode monopulse radar that uses a Cassegrain antenna.  In its air-to-air mode it can detect, track and operate as a fire control radar for both the 30  mm cannon and the Matra R511 and R530 missiles.  It also features a home-on-jam capability, as well as an anti-jaming capability that allows the radar to work in a limited ECM environment. Like other second-generation air-to-air radars, it lacked a "look down/shoot down" capability.

Its ground mapping capability allows it provide ground visualization out to a range of approximately 50 nm and to safely overfly ground obstacles at approximately  200 meters altitude.   It can also guide the AS30 AGM.




Specifications:

	Frequency:	8-10 GHz (I-band (NATO))
	PRF:		2 Khz (air-to-air); 645 Hz (air-to-ground)
	Pulse width:	0.5 µ sec (air-to-air); 1.75 u sec (air-to-ground)
	Power: 		200 kW (peak) 
	Scan Limits:	±60 ° azimuth, ±60 ° (air-to-air);  ±12 ° (air-to-ground) elevation 
	Range:		27 nm (air-to-air)
			50 nm (air-to-ground mapping)		

NOTES:  IOC: 1964

SOURCES:  https://www.secretprojects.co.uk/threads/cyrano-radar-family.37016/; RAAF "Flight Manual Mirage IIIO and IIID (AAP 7213.003-1 dtd 01Jun78, pgs.  1-90A, 1-93, 1-98 ; https://mega.nz/folder/CJEh1SxL#EY5iBc-FCk9h8PhJ4hbsnw
HISTOIRE du RADAR dans le MONDE puis en FRANCE par Jacques DARRICAU et Yves BLANCHARD. n.d. https://www.radars-darricau.fr/livre/2-PDF/histoire.pdf. ; Dildy, Douglas C., and Pablo Calcaterra. Sea Harrier FRS 1 vs Mirage III/Dagger: South Atlantic 1982. London: Bloomsbury Publishing, 2017., pp 37-38.

