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看一下电磁频谱可以知道,大气中有几个波段能量最容易透过。其中特别引人注意的窗口是3～5和7.5～13微米。在这些波段,目标的温差对辐射功率有影响;然而,在环境温度(300°K)附近,峰值辐射波长为10微米。本文集中介绍工作在7.5～13微米波段的红外前视系统AN/AAS-28A型红外前视系统系装在美海军A-6C型机腹下的。该系统有三个部分:接收、线路和控制面板。工作时,红外能量由红外透镜系统接收,并用一组扫描镜扫描(图1,按次序地聚焦在一组探测器阵列上。各探测器的输出经放大用以调制一支发光二极管。二极管阵列设计得和探测器阵
Look at the electromagnetic spectrum can know that there are several bands in the atmosphere the easiest to pass through. Of particular note are windows 3 to 5 and 7.5 to 13 microns. In these bands, the temperature difference of the target has an influence on the radiated power; however, the peak emission wavelength is around 10 μm around the ambient temperature (300 ° K). This article focuses on working in the 7.5 ~ 13 micron band infrared front view system AN / AAS-28A infrared front view system installed in the US Navy A-6C belly. The system has three parts: receive, line and control panel. In operation, the infrared energy is received by the infrared lens system and is scanned by a set of scanning mirrors (Figure 1, focused in sequence on a set of detector arrays.) The output of each detector is amplified to modulate a light emitting diode Design and detector array