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µÚ1ƪÎÄÕ£º ÂÛÎÄÌâÄ¿£ºAnalysis of Space Target Detection Range Based on Space-borne Fisheye Imaging System in Deep Space Background ×÷Õß: Fuyu Huang; Yongzhong Wang; Xueju Shen; Gang Li; Shihua Yan À´Ô´³ö°æÎï: Infrared Physics & Technology ¾í: 55 ÆÚ: 6 Ò³: 475-80 ³ö°æÄê: Nov. 2012 DOI: 10.1016/j.infrared.2012.07.002 µÚ¶þƪÎÄÕ£º ÂÛÎÄÌâÄ¿£ºMethod for calibrating the fisheye distortion center ×÷Õß:◦Huang, Fuyu; Wang, Yongzhong; Shen, Xueju; Lin, Chao; Chen, Yudan À´Ô´³ö°æÎï: Applied Optics, Vol. 51 Issue 34, pp.8169-8176 (2012) |
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(1) IDS Number: 036JZ Analysis of space target detection range based on space-borne fisheye imaging system in deep space background Author(s): Huang, FY (Huang, Fuyu)[ 1 ] ; Wang, YZ (Wang, Yongzhong)[ 1 ] ; Shen, XJ (Shen, Xueju)[ 1 ] ; Li, G (Li, Gang)[ 1 ] ; Yan, SH (Yan, Shihua)[ 1 ] Source: INFRARED PHYSICS & TECHNOLOGY Volume: 55 Issue: 6 Pages: 475-480 DOI: 10.1016/j.infrared.2012.07.002 Published: NOV 2012 Times Cited: 0 (from Web of Science) Cited References: 14 [ view related records ] Citation Map Abstract: A space-borne photoelectric detection method is proposed based on the long wave infrared (LWIR, 8-14 mu m) fisheye imaging system (LWIRFIS) in this paper. The existing detection range equation is modified to calculate the maximum detection ranges of the LWIRFIS for space targets, and the influence of several key parameters is discussed in detail. The results show that, the system maximum detection range increases with the decrease of the half-field angle, the increase of the target area, the rise of the target temperature, the drop of the optics temperature, and the reduction of the system threshold signal-to-noise ratio. The detection range can be improved greatly through taking measures to optimize the latter two system parameters, such as setting up diaphragms, controlling the operating temperature, suppressing the noises by software or hardware methods. This work lays the foundation for the further research of space-borne super-wide field of view (FOV) imaging system, and provides a useful exploration for improving the capability of space situation awareness (SSA) of the space-borne observation platform. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved. Accession Number: WOS:000311023500005 Document Type: Article Language: English Author Keywords: Space-borne; LWIR; Fisheye imaging system; Detection range Reprint Address: Huang, FY (reprint author), Mech Engn Coll, Dept Opt & Elect Engn, Shijiazhuang, Hebei, Peoples R China. Addresses: [ 1 ] Mech Engn Coll, Dept Opt & Elect Engn, Shijiazhuang, Hebei, Peoples R China E-mail Address: hfyoptics@163.com Publisher: ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS Web of Science Categories: Instruments & Instrumentation; Optics; Physics, Applied Research Areas: Instruments & Instrumentation; Optics; Physics IDS Number: 036JZ ISSN: 1350-4495 (2) IDS Number: 048DC Method for calibrating the fisheye distortion center Author(s): Huang, FY (Huang, Fuyu)[ 1 ] ; Wang, YZ (Wang, Yongzhong)[ 1 ] ; Shen, XJ (Shen, Xueju)[ 1 ] ; Lin, C (Lin, Chao)[ 1 ] ; Chen, YD (Chen, Yudan)[ 1 ] Source: APPLIED OPTICS Volume: 51 Issue: 34 Pages: 8169-8176 Published: DEC 1 2012 Times Cited: 0 (from Web of Science) Cited References: 23 [ view related records ] Citation Map Abstract: A simple method is proposed to calibrate the fisheye distortion center, which synthesizes the algorithms of the ellipse fitting and Gaussian surface fitting. Through analyzing the imaging projection of the equidistant fisheye lens, the calibration principle is introduced in detail. From the experimental results, we find that ellipse fitting error and the relative error of Gaussian surface fitting are less than 0.06 pixels and 1.5%, respectively, and the proposed method has a higher calibration precision and stability compared with the methods in the inferences. Besides, the proposed method does not rely on any particular distortion model and other fisheye parameters, and only the image information of the calibration board is utilized, which reduces the calibration complexity and is suitable for the center calibration of any equidistant fisheye camera. (C) 2012 Optical Society of America Accession Number: WOS:000311889400013 Document Type: Article Language: English KeyWords Plus: CAMERA; MODEL Reprint Address: Huang, FY (reprint author), Shijiazhuang Mech Engn Coll, Dept Opt & Elect Engn, Heping W Rd 97, Shijiazhuang 050003, Hebei, Peoples R China. Addresses: [ 1 ] Shijiazhuang Mech Engn Coll, Dept Opt & Elect Engn, Shijiazhuang 050003, Hebei, Peoples R China E-mail Address: hfyoptics@163.com Publisher: OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA Web of Science Categories: Optics Research Areas: Optics IDS Number: 048DC ISSN: 1559-128X |

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