摘要
为了提高广角天幕立靶的灵敏度和测试可靠性,利用棱形光锥将光阑后的光线按需分开传输汇聚.棱形光锥的应用解决了弹丸在天幕的信号重叠问题,并且有效地降低了混合的背景光产生的噪声,从而提高了广角天幕立靶的灵敏度和测试可靠性.本文对棱形光锥在天幕立靶中的应用原理和棱形光锥的设计方法进行了研究.对光锥光电转换系统和场镜光电转换系统进行了对比试验,试验证明,在单条狭缝的情况下,安装了光锥光电转换系统的广角天幕立靶测得的弹丸信号平均信噪比提高了17.4%.试验和理论推导证明,安装了光锥光电转换系统的天幕立靶灵敏度大幅提高.
In order to enhance the sensitivity and measuring reliability of the wide-angle sky screen target, we adopted the prism-shape cone of optics to separate and gather light behind the light diaphragm. Thus the problem of the signal overlap in the sky screen was solved, and the noise caused by mixed background light was reduced effectively, so the sensitivity and measuring reliability of the wideangle sky screen target was enhanced. The application principle and design method of the prism-shape cone of optics were studied. Experiments proved that the mean SNR of the projectile signal increased 17.4 percent and the system sensitivity is higher by using the prism-shape cone of optics in the wideangle sky screen target than that by using filed lens.
出处
《测试技术学报》
2009年第4期366-371,共6页
Journal of Test and Measurement Technology
关键词
天幕立靶
棱形光锥
信噪比
灵敏度
sky screen target
the prism shape cone of optics
signal-to-noise ratio
sensitivity
