Along with the improvements of surface ship detection ability of radars, the viability of surface ships has significantly decreased. Some military superior countries have pay attention-to developing surface ships adopting radar stealth technology. By means of literatures research and developments survey, we reach a conclusion that at present surface ships mainly face four kinds of radar threats and the ships without radar stealth technology have a very large radar cross section. In terms of surface ships,radar stealth technology has very important tactical values, including reducing the detection range of enemy's radar, lowering the ability of target identification and enhancing the effect of interference. Now,there are two main technical approaches for surface ships to radar stealth, one is careful shape design and the other is radar stealth materials.%由于探测水面舰艇的雷达性能不断提升,严重威胁了水面舰艇的生存能力,世界各军事大国正在研究如何将雷达隐身技术应用于水面舰艇.通过文献调研和动态跟踪发现,水面舰艇主要面临4类雷达探测威胁,而未经过隐身设计的舰艇的雷达散射截面很大.舰艇经过隐身设计后,在作战中能缩短敌方雷达探测距离,降低敌方目标识别能力,有效增强干扰效果,具有很强的战术意义.目前,水面舰艇主要通过精确的外形设计和隐身材料2种技术途径实现雷达隐身.
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