Type 347 Radar

The Type 347G "Rice Lamp" I-band fire-control radar is found on older Chinese Navy ships, in conjection with the Type 76A dual-37mm automatic AAA gun. Typically, the system includes 2 Type 347G fire-control radar with optical director, and 4 Type 76A guns. They're used on the Luda, Luhu, Luhai, Jiangwei class surface warships, as well as the Houjian, Houxin, and Haiging class patrol boats. [http://www.sinodefence.com/navy/weapon/type76aaaa.asp]

In the 1980s, China imported the OTOBreda (now OTO-Melara) Twin Fast Forty AAA [http://www.navweaps.com/Weapons/WNIT_4cm-70_Breda.htm] and Selenia (now AMS) SPG-74 (RTN-20X) fire control system from Italy for evaluation. Although the Chinese navy didn't deploy the twin-40mm AAA, there are some similarities between the Type 347 and the SPG-74 radar, leading some commentators to claim that the Type 347 is based on SPG-74 technology.

The distinct recognition characteristic of the Type 347 radar is the inverse cassegrain antenna with twisted polarization.

The improved variant, LR66 is found on Type 730 CIWS, J band tracking. There seems to be other variants of this design and is marketed by both CETC and XRINT (Xi'an Research Institute of Navigation Technology)/西安导航技术研究所/第二十研究所

pecifications

* X-band(Specs based on RTN-20X)
* Beam: 2.2 deg
* Gain: 37 dBi
* Range:
** Target acquisition for 2m2: 12 KM (verified for LR66)
** Target acquisition for 0.1m2: 6 KM (verified for LR66)
* Other features:
** Uses a coherent pulse doppler design
** Non coherent Moving Target Indicator/Detection (MTI, MTD), CFAR (Constant False Alarm Rate)
** Antinodding, anti clutter capability (A well advertised feature of the RTN family)
* Other reported names:
** RICEBOWL
** TR47C

ee also

* Luhai class destroyer
* Luhu class destroyer

External links

* [http://www.finmec.com/ofcs.asp SELEX Sistemi Integrati RTN 30X ]
* [http://www.cetc.com.cn China Electronics Technology Group Corporation (CETC) ]


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