OVERVIEW: The Type 345 (MR35) is a ship mounted, short-range, fire control radar incorporating an optical and IR tracking system  for the HQ-7 SAM.  It operates in the J band (NATO).

DETAILS: The  Type 345 radar is a monopulse-Doppler radar using a Cassegrain antenna.  It is the fire control radar for the short-range HQ-7 SAM.  The PLAN HQ-7 system is likely a reverse engineered Thomson-CSF Castor 2J/C. If the Chinese copy of the Castor 2J/C is faithful then it will have pulse compression, velocity discrimination filters, frequency agility to enable clutter de-correlation and a passive tracking capability. The system employs Doppler tracking with a first blind speed of 1,000m/sec. 

The system's IR sensor is used to gather the HQ-7 missile into the Type 345's radar.


Specifications:

Frequency: 		 15.7-17.7 GHz (J Band (NATO), Ku Band (IEEE))
Power output: 		 30 kW (peak)
PRF:			3600 or 7200 pps 
Pulsewidth: 		 ??  µs	
Range Accuracy:		??
Range: 			21.5nm (max); 350 meters (minimum)	 		
			16nm v. 2m2 RCS aircraft
			9.7nm v. sea skimming target                        					
On/Off time:		??		

NOTES: IOC  1989.

SOURCES:  "Type 345 Radar." Wikipedia, the Free Encyclopedia. Last modified April 30, 2024. https://en.wikipedia.org/wiki/Type_345_Radar. ; Wise, John C. "PLA Air Defence Radars." Air Power Australia. Accessed August 29, 2024. https://www.ausairpower.net/APA-PLA-IADS-Radars.html#mozTocId5336.; Friedman, The Naval Institute Guide to World Naval Weapons Systems (5th ed) 2005-06, pg. 573;

