探测光幕中的高速弹丸红外辐射特性分析

为了解决光电探测靶在低照度或夜间条件下不能工作的问题,提出采用红外探测技术设计其探测光学系统,改善其探测性能。根据热辐射原理,及弹丸在高速运动中与外界热交换特点,采用节点网络法,建立弹丸表面热辐射计算方程,并分析高速弹丸在探测光幕的红外辐射特性;利用微分元法,求解弹丸在光幕产生的红外辐射亮度;通过探测光学系统,建立红外探测器的输出光信号量与弹丸在光幕的辐射通量关系;结合弹丸长度与作用距离,分析高速运动弹丸作用在不同幕厚的信号变化,以及不同速度、不同直径弹丸作用在光幕的红外辐射。

Infrared radiation characteristics analysis of high velocity projectile in detection screen

For the optic -electric detecting target cannot work with low illumination or at night, the infrared detection technology was proposed to design its detection optical system and improve its detection performance. According to principles of thermal radiation and characteristics of heat exchange when projectile was flying with high velocity, the nodal network theory was used to set up the equation of thermal radiation of projectile surface, and analyze the infrared radiation characteristics of high velocity p...