Analysis and Reduction of Solar Stray Light in the Nighttime Imaging Camera of Luojia-1 Satellite

doi:10.3390/s19051130

CIOMP OpenIR

	Analysis and Reduction of Solar Stray Light in the Nighttime Imaging Camera of Luojia-1 Satellite
	X.Zhong; Z.Q.Su; G.Zhang; Z.G.Chen; Y.Meng; D.R.Li; Y.Liu
	2019
发表期刊	Sensors
ISSN	1424-8220
卷号	19 期号:5 页码:14
摘要	As one of the experimental payloads on Luojia-1 satellite, the nighttime imaging camera works with a high sensitivity to acquire nighttime light on earth. Solar stray light is a fatal problem for optical satellite works in the polar orbit, even for nighttime scene imaging, resulting in image saturation and light signal detection failure. To solve this problem, an analysis of the range of solar incident angles was conducted firstly. Based on the result, a special-shaped baffle was designed to avoid direct sunlight incidence. Moreover, the capability of stray light elimination of the lens was enhanced by an order of magnitude via optimizing the internal structure. An evaluation of secondary scattering stray lights into the camera from surrounding parts was performed based on a real satellite model. The results showed that the stray light elimination reaches a 10(-10) order, meeting design requirements. Utilizing on-orbit images, the ability of satellites in illuminated areas to obtain artificial lights in dawn-dusk area was verified, proving the effectiveness of the stray light elimination design.
关键词	Luojia-1 satellite,nighttime imaging camera,stray light,city lights,images,Chemistry,Engineering,Instruments & Instrumentation
DOI	10.3390/s19051130
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62740
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X.Zhong,Z.Q.Su,G.Zhang,et al. Analysis and Reduction of Solar Stray Light in the Nighttime Imaging Camera of Luojia-1 Satellite[J]. Sensors,2019,19(5):14.
APA	X.Zhong.,Z.Q.Su.,G.Zhang.,Z.G.Chen.,Y.Meng.,...&Y.Liu.(2019).Analysis and Reduction of Solar Stray Light in the Nighttime Imaging Camera of Luojia-1 Satellite.Sensors,19(5),14.
MLA	X.Zhong,et al."Analysis and Reduction of Solar Stray Light in the Nighttime Imaging Camera of Luojia-1 Satellite".Sensors 19.5(2019):14.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Analysis and Reducti（5393KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载