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Infrared pushbroom camera breadboard using off-the-shelf 2D array of detector

机译:使用现成的二维探测器阵列的红外推扫相机面包板

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Abstract: Performances for nowadays optronic systems require focal plane arrays (FPA) with an increasing number of detectors. The `push- broom' technic is well adapted to earth observation in the visible range with the availability of long linear CCD'S offering thousands of pixels. In the infrared, line scan systems are preferred at the present time because technological difficulties have to be overcome in order to get long linear arrays. Among the most important, are: (1) Difficulties to have a large cold focal plane with a temperature uniformity of a few degrees. (2) Difficulties to get good detection material over large surface. Mechanical or optical butting technology can be used there but with dead pixels and/or side effects. (3) Very low cold shield efficiency due to the geometry of the long linear array. (4) Very high development costs. MATRA DEFENSE UAO has made the design of a new infrared FPA concept which has the advantage to overcome all drawbacks listed previously (patented design). The idea consists to transform the pixel arrangement geometry of a 2D array which is available off the shelf into a long linear FPA using a coherent infrared fiber optic reformatter. In order to demonstrate the feasibility of this new FPA concept, a camera breadboard has been built. This task has been supported by the French MOD (STTE). This paper describes this breadboard and gives main technical performances.!0
机译:摘要:当今的光电系统的性能需要焦平面阵列(FPA)和越来越多的检测器。 “推扫帚”技术非常适合在可见光范围内进行地球观测,并提供了可提供数千个像素的长线性CCD'S。在红外中,目前优选线扫描系统,因为必须克服技术难题才能获得长线性阵列。其中最重要的是:(1)具有大的冷焦平面和几度的温度均匀性的困难。 (2)难以在大表面上获得良好的检测材料。可以在此处使用机械或光学对接技术,但会有死像素和/或副作用。 (3)由于长线性阵列的几何形状,冷屏蔽效率非常低。 (4)非常高的开发成本。 MATRA DEFENSE UAO设计了一种新的红外FPA概念,该概念具有克服以前列出的所有缺点的优点(专利设计)。这个想法包括使用相干红外光纤重整器将现成的2D阵列的像素排列几何形状转换为长的线性FPA。为了演示这种新的FPA概念的可行性,已构建了相机面包板。法语MOD(STTE)支持了此任务。本文介绍了此面包板,并提供了主要技术性能。!0

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