Stray light analysis, baffle, and optical design of a high-resolution satellite camera

被引：9
|
作者：
Asadnezhad, Mohammad [1 ]
Eslamimajd, Abdollah [1 ]
Hajghassem, Hassan [2 ]
机构：
[1] Maleke Ashtar Univ Technol, Dept Elect & Elect Engn, Tehran, Iran
[2] Univ Tehran, Dept New Sci & Technol, Tehran, Iran
来源：
JOURNAL OF APPLIED REMOTE SENSING | 2018年 / 12卷 / 02期
关键词：
optical system; remote sensing; stray light; baffle; satellite camera; SYSTEMS;
D O I：
10.1117/1.JRS.12.026009
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A high-resolution optical system is designed for a remote sensing satellite camera in low earth orbit, with an entrance pupil diameter and effective focal length of 110 and 840 mm, respectively. The modulation transfer function of the camera is equal to 0.8 at a Nyquist frequency and the image quality is close to the diffraction limit. In the next step, stray light is analyzed and a baffle with 13 internal vanes is designed. Results show that stray lights can be completely eliminated at angles greater than 2.5 deg, whereas at angles less than 2.5 deg the intensity of stray lights is reduced up to 100,000 times of its original intensity. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：16
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