Wide-field auroral imager onboard the Fengyun satellite

doi:10.1038/s41377-019-0157-7

CIOMP OpenIR

	Wide-field auroral imager onboard the Fengyun satellite
	X.X.Zhang; B.Chen; F.He; K.F.Song; L.P.He; S.J.Liu; Q.F.Guo
	2019
发表期刊	Light-Science & Applications
ISSN	2047-7538
卷号	8 页码:12
摘要	The newly launched Fengyun-3D (FY-3D) satellite carried a wide-field auroral imager (WAI) that was developed by Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences (CIOMP), which will provide a large field of view (FOV), high spatial resolution, and broadband ultraviolet images of the aurora and the ionosphere by imaging the N-2 LBH bands of emissions. The WAI consists of two identical cameras, each with an FOV of 68 degrees in the along-track direction and 10 degrees in the cross-track direction. The two cameras are tilted relative to each other to cover a fan-shaped field of size 130 degrees x 10 degrees. Each camera consists of an unobstructed four-mirror anastigmatic optical system, a BaF2 filter, and a photon-counting imaging detector. The spatial resolution of WAI is similar to 10 km at the nadir point at a reference height of 110 km above the Earth's surface. The sensitivity is >0.01 counts s(-1) Rayleigh(-1) pixel(-1) (140-180 nm) for both cameras, which is sufficient for mapping the boundaries and the fine structures of the auroral oval during storms/substorms. Based on the tests and calibrations that were conducted prior to launch, the data processing algorithm includes photon signal decoding, geometric distortion correction, photometric correction, flat-field correction, line-of-sight projection and correction, and normalization between the two cameras. Preliminarily processed images are compared with DMSP SSUSI images. The agreement between the images that were captured by two instruments demonstrates that the WAI and the data processing algorithm operate normally and can provide high-quality scientific data for future studies on auroral dynamics.
关键词	ultraviolet imager,spacecraft,Optics
DOI	10.1038/s41377-019-0157-7
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/181722/62779
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.X.Zhang,B.Chen,F.He,et al. Wide-field auroral imager onboard the Fengyun satellite[J]. Light-Science & Applications,2019,8:12.
APA	X.X.Zhang.,B.Chen.,F.He.,K.F.Song.,L.P.He.,...&Q.F.Guo.(2019).Wide-field auroral imager onboard the Fengyun satellite.Light-Science & Applications,8,12.
MLA	X.X.Zhang,et al."Wide-field auroral imager onboard the Fengyun satellite".Light-Science & Applications 8(2019):12.

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