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The Type 347G "Rice Bowl" I-band fire-control radar is found on 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. () In the 1980s, China imported the OTOBreda (now OTO-Melara) Twin Fast Forty AAA () 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 ==Specifications== * 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: * * TR47C 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Type 347 Radar」の詳細全文を読む スポンサード リンク
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