我说过, LN2 是为了增加传感器和目标的温度差, 降低噪音

All-aspect seekers also tend to require cooling to give them the high degree of sensitivity required to lock onto the lower level signals coming from the front and sides of an aircraft. Background heat from inside the sensor, or the aerodynamically heated sensor window, can overpower the weak signal entering the sensor from the target. (CCDs in cameras have similar problems; they have much more "noise" at higher temperatures.)

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• "为了增加传感器和目标的温度差"!太专业了,五体投地的PF! -coolwin- ♀ (0 bytes) () 08/25/2010 postreply 21:42:18