Non-Rotationally Symmetric Field Mapping for Back-Scanned Step/Stare Imaging System

doi:10.3390/app10072399

CIOMP OpenIR

	Non-Rotationally Symmetric Field Mapping for Back-Scanned Step/Stare Imaging System
	Q. Fu,X. Zhang,J. P. Zhang,G. W. Shi,S. N. Zhao and M. X. Liu
	2020
发表期刊	Applied Sciences-Basel
卷号	10 期号:7 页码:14
摘要	Step/stare imaging with focal plane arrays (FPAs) has become the main approach to achieve wide area coverage and high resolution imaging for long range targets. A fast steering mirror (FSM) is usually utilized to provide back-scanned motion to compensate for the image motion. However, the traditional optical design can just hold one field point relatively stable, typically the central or on-axis field point, on the FPA during back-scanning; all other field points may wander during the exposure due to imaging distortion characteristics of the optical system, which reduces the signal to noise ratio (SNR) of the target. Aiming toward this problem, this paper proposes a non-rotationally symmetric field mapping method for the back-scanned step/stare imaging system, which can make all field points stable on the FPA during back-scanning. First of all, the mathematical model of non-rotationally symmetric field mapping between object space and image space is established. Then, a back-scanned step/stare imaging system based on the model is designed, in which this non-rotationally symmetric mapping can be implemented with an afocal telescope including freeform lenses. Freeform lenses can produce an anamorphic aberration to adjust distortion characteristics of the optical system to control image wander on an FPA. Furthermore, the simulations verify the effectiveness of the method.
DOI	10.3390/app10072399
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收录类别	SCI
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/181722/64730
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	Q. Fu,X. Zhang,J. P. Zhang,G. W. Shi,S. N. Zhao and M. X. Liu. Non-Rotationally Symmetric Field Mapping for Back-Scanned Step/Stare Imaging System[J]. Applied Sciences-Basel,2020,10(7):14.
APA	Q. Fu,X. Zhang,J. P. Zhang,G. W. Shi,S. N. Zhao and M. X. Liu.(2020).Non-Rotationally Symmetric Field Mapping for Back-Scanned Step/Stare Imaging System.Applied Sciences-Basel,10(7),14.
MLA	Q. Fu,X. Zhang,J. P. Zhang,G. W. Shi,S. N. Zhao and M. X. Liu."Non-Rotationally Symmetric Field Mapping for Back-Scanned Step/Stare Imaging System".Applied Sciences-Basel 10.7(2020):14.

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