The Type 345 fire-control radar system is used to guide the HQ-7

HQ-7

The HongQi 7 or HQ-7 is a short-range air defense missile. The missile is deployed on both ships and land-based vehicles. China revealed the export version, FM-80, in the 1989 Dubai Aerospace Show...

 short-range surface-to-air missile. The system is installed on many modern, and retrofitted Chinese navy ships.

The Type 345 fire control radar appears to be based on the Thomason-CSF Castor CTM (Conduite de Tir Multisensor) fire control radar which is a Castor II/J with a separate IR camera (Pirana) and TV tracker and not the oft quoted Castor IIC. It is possible however, that the Castor IIC was bought initially but the CTM was also bought later.

It uses a TWT transmitter with a Cassegrain antenna

Cassegrain antenna

In telecommunications and radar, a Cassegrain antenna is a parabolic antenna in which the feed radiator is mounted at or behind the surface of the concave main parabolic reflector dish and is aimed at a smaller convex secondary reflector suspended in front of the primary reflector...

. Pulse compression (7.5 microsec pulse) and pulse Doppler processing (first blind speed 1000 m/s) techniques are used and it can acquire ASHM at 18 km and fighter at 30 km with tracking range between 350 m to 30 km.

Specifications

• J - band
• (Specs based on Castor 2J)
  • Beam: 1.5⁰ x 0.67⁰ deg
  • Peak Power: 30 kW
  • PRR: 3600 pps or 7200 pps
  • Gain: 43 dB
  • Elevation: +85/-25 stabilized
  • Target acquisitions speed: 2.8 sec (air target), 1.7 sec (ASHM)
  • Pirana FLIR FOV: 2.7⁰ x 1.8⁰ and 8.1⁰ x 5.4⁰ degrees
  • Max range of FLIR: 15 km
  • Pirana CCD (Daylight camera) FOV: 2.4⁰ x 1.8⁰ degrees

See also

• Type 052 Luhu class destroyer
  Luhu class destroyer
  The Type 052 Luhu-class was one of the first modern multi-role guided missile destroyers built by China. There are currently two units in active service with the People's Liberation Army Navy with no plans of further construction of additional units.-History:Designed by the China Warship Design...
  
  
• Type 051B Luhai class destroyer
  Luhai class destroyer
  The Type 051B Luhai-class is a class of destroyer built by the People's Republic of China. It consists of only one ship, No.167 Shenzhen. When Shenzhen was commissioned into the People's Liberation Army Navy in 1998, it was then, the largest surface combatant that China had ever built...
  
  
• Type 053H Jiangwei class frigate
  Jiangwei class frigate
  The Type 053H2G and Type 053H3 were Chinese frigates that entered service with the People's Liberation Army Navy in the 1990s and 2000s...