前视红外系统一般都使用在77K低温下工作的致冷型红外探测器。最近,使用非致冷探测器的前视红外系统已被研制出来。这种前视红外系统所用的非致冷探测器(铁电探测器)本身就是一种差分探测器,其产生的信号是被观察景物信号与参考光源信号之差。为了最大限度地减少探测器内部的动态范围问题,最好是 The forward looking infrared system generally uses a chilled infrared detector that operates at a low temperature of 77K. Recently, forward infrared systems using non-refrigerated detectors have been developed. The uncooled detector (ferroelectric detector) used in this forward-looking infrared system is itself a differential detector that produces the difference between the observed scene signal and the reference light source signal. In order to minimize the dynamic range of the detector, the problem is best