红外焦平面探测器阵列规格的发展

Development of Infrared Focal Plane Array Detector in Format

红外焦平面探测器阵列规格的发展是一个从疏到密、从小到大的过程,受到大面积探测器材料生长和小像元制备等因素的限制。战略焦平面阵列一般用于探测点源目标,而战术焦平面阵列则一般用于探测扩展源目标。从相关的基本概念出发,分析了焦平面阵列规格的发展过程,讨论了作用距离与焦平面阵列规格之间的关系。由于电视格式基本固定,在战术焦平面阵列实现全帧格式以后,其规格进一步增加的势头即便不是停止,也必将会趋缓。但是另一方面,因为焦平面阵列的规格越大,其居高临下而一次看到的面积就越广,所以战略焦平面阵列将会继续向超大规格发展。

The development of infrared Focal Plane Array （FPA） detectors in format size is a process from sparseness to density and from smallness to largeness. It is limited by the factors such as material growth of large area detectors and fabrication of small pixels. Strategic FPAs are usually used to detect point source targets while tactical FPAs are usually used to detect extended source targets. Starting from the related basic concepts, the evolution of FPA format is analyzed and the relationship between the operation range and the FPA format is discussed. Since TV formats are changeless, the further increase trend of the tactical FPAs in format will be either stopped or slower after their full frame formats are realized, On the other hand, the larger the format of the FPA is, the wider area it can cover each time is. So, the strategic FPAs will develop toward super-large format.