摘要
本文详细讨论了红外热像仪的扫描机理。分别阐述了光机扫描和电子束扫描,以及它们之间的关系。并从设计需要出发,推导了隔行扫描公式,这是一个选择扫描体制的重要公式,应用于总体设计考虑十分方便。
Based on the role of the column type scanning reticle in optical system of infrared search-servosystem, the paper studied the requirements of image quality in optical system for reticle design, and calculated the blur circle diameters of the field of view corresponding to different modulated pulse numbers. Employing the point spread function, the blind area and the blur circle diameter were calculated, where 84% of the radiant energy are centralized. The matching conditions between the transparent radial strip of the reticle and the blur circle of target image is then predicted. Finally, the principles along with typical data is also given which determines the install error of reticle for optimal position of infrared image surface in optical systems.
出处
《红外技术》
CSCD
1993年第3期11-14,共4页
Infrared Technology
关键词
热像仪
隔行扫描
电视图象
扫描
Reticle
Column type scanning
Point spread function Install error
