OVERVIEW:  The  Cyrano IV-2  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 IV-2 radar is a multimode monopulse radar that uses an inverted Cassegrain antenna.  It can detect, track and operate as a fire control radar for both the 30  mm cannon and the Matra missiles.  It also features a home-on-jam capability, as well as an anti-jamming capability that allows the radar to work in a limited ECM environment. It featured an MTI (Moving Target Indicator) mode that gave it a limited LD/SD (Look Down-Shoot Down) capability. Unlike earlier models, the Cyrano IV-2 used transistors, increasing computer capacity and enable it to provide the pilot with interception vectors and missile firing zones.

Its ground mapping capability allows it provide ground visualization out to a range of approximately 50 nm (estimated) and to safely overfly ground obstacles at approximately  200 meters altitude (estimated).   

Specifications:

	Frequency:	8-10 GHz (I-band (NATO))
	PRF:		?? Khz (air-to-air)
	Pulse width:	?? u sec (air-to-air)
	Power: 		?? kW (peak) 
	Scan Limits:	±60 ° azimuth, elevation (air-to-air);   
	Range:		60 nm (air-to-air)(optimal); 38 nm (vs. large aircraft); 30nm (v. fighter)
				

NOTES:  IOC: 1973.  Used in the Mirage F-1C

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.; Janes's Radar and Electronic Warfare Systems 2002-2003, "Cyrano IV/IVM/IVMR/IVM3 multimode radars" dtd 06 Novmeber 2001. ; Friedman, Norman. The Naval Institute Guide to World Naval Weapons Systems, 1997-1998. US Naval Institute Press, 1997, pg. 195. ; Shephard, "The Consise Global Industry Guide: Radar Systems", May 2018, pg. 11 https://mags.shephardmedia.com/HB-samples-2018/RS2-webmag.pdf; "Radar Thomson-CSF Cyrano IV." Accessed April 24, 2023. https://pyrodine16.rssing.com/chan-9282860/article8.html.
