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11月1日,第十一届珠海航展盛大开幕。上午10点半左右,两架歼-20第四代战斗机出场,进行空中飞行展示。(摄影 环球时报记者 崔萌)
歼-20的眼:
这次航展上的重量级展品中,还包括中国历史上首次公开展出的机载有源相控阵火控雷达。它就是由中国电子科技集团公司第十四研究所研制的KLJ-7A雷达。该所雷达专家王宏哲告诉《环球时报》记者,相比传统的机械扫描雷达,有源相控阵火控雷达对目标的搜索能力快得多,能同时跟踪不同方向的多个目标,探测精度和距离也得到大幅提升。据称,KLJ-7A雷达比此前装备在“枭龙”战机上的KLJ-7雷达的探测距离增加了70%。在当前空战“早发现、早攻击”的思路下,雷达探测距离提升,意义不言自明。
此外,有源相控阵火控雷达不仅很难用传统的措施实施干扰,反而可以利用其发射天线的技术特点实施电子干扰作战;同时由于雷达信号的发射和接收是由大量独立的发射/接收单元组成,无形中提高了雷达的工作可靠性,因为少数几个发射/接收单元的故障并不会影响雷达的正常使用,即使近半发射/接收单元失效,雷达系统仍能维持基本使用。
更让人联想浮翩的是,由于几乎所有中国国产战机的机载雷达都出自该所,外界猜测,该所可能会为歼-20配备更先进有源相控阵火控雷达。
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