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美国Northrop公司进入现役红外对抗领域是在越南战争期间,当时美国空军与该公司签订了一个紧急合同,研制和生产这种红外对抗系统供迅速用来装配美国空军飞机以防御新近服役的苏制红外寻的导弹。因为具有强红外特性的美国飞机如EB-66特别容易受到这种热寻的SAM导弹的致命攻击。Northrop生产了AN/AAQ-4内部安装红外干扰发射机以对抗新的威胁。它在越南战争后期已广泛用于东南亚,并证明在诱惑新红外导弹方面很有效。AN/AAQ-4用远景铯红外源产生高度有效的干扰发射信号。干扰发射机长84cm,直径33cm和重63.5kg。为亚音速应用设计的这种
US Northrop entered active duty in the field of infrared warfare during the Vietnam War when the United States Air Force signed an emergency contract with the company to develop and manufacture such an infrared countermeasure system for rapid deployment to United States Air Force aircraft to protect the newly serviced Soviet infrared Missing missile. Because of the strong infrared characteristics of the United States aircraft such as the EB-66 is particularly vulnerable to such a heat-seeking SAM missile lethal attack. Northrop manufactures the AN / AAQ-4 internal IR transmitter to combat new threats. It has been widely used in Southeast Asia during the late Vietnam War and proved to be effective in attracting new infrared missiles. AN / AAQ-4 generates a highly effective interfering transmit signal with long-term cesium infrared sources. Interfering transmitter length 84cm, diameter 33cm and weight 63.5kg. Designed for subsonic applications