机构

• 物理研究所 [1]
• 长春光学精密机械与物... [1]
• 自动化研究所 [1]
• 西安光学精密机械研究... [1]
• 近代物理研究所 [1]
• 国家授时中心 [1]
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采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [4]
• 会议论文 [2]

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• 2022 [1]
• 2020 [1]
• 2011 [1]
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• 1998 [1]
• 1996 [1]
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浏览/检索结果: 共6条，第1-6条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Research on selection of high intensity laser beam expanding system 会议论文  OAI收割 Kunming, China, 2021-12-07 作者:  Gao, Na;  Zhang, XiangHui;  Liu, Jie;  Shen, ZeYi;  Xin, Wei   |  收藏  |  浏览/下载：49/0  |  提交时间：2022/04/27 beam expander  reflecting system  refraction system  off-axis,coaxial   3-D Gaze-Estimation Method Using a Multi-Camera-Multi-Light-Source System 期刊论文  OAI收割 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2020, 卷号: 69, 期号: 12, 页码: 9695-9708 作者:  Chi, Jiannan;  Liu, Jiahui;  Wang, Feng;  Chi, Yingkai;  Hou, Zeng-Guang   |  收藏  |  浏览/下载：33/0  |  提交时间：2021/01/06 Pupils  Cameras  Cornea  Estimation  Three-dimensional displays  Optical distortion  3-D gaze estimation  corneal reflection  multi-camera-multi-light-source (MCMLS) system  optical axis reconstruction  pupil refraction  user calibration   Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China 作者:  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However  optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome  which demanded gimbal point coincide with the center of the dome exactly. In fact  gimbal point displacement could not be eliminating due to fabrication  assembly and vibration  therefore the optical axis pointing error generated. In this paper  the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed  and the theoretical expression of the optical axis pointing error was derived based on geometric optics  and the error dynamics was explored by numerical. Take a visible light image seeker as a case  the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm  and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm  the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore  with the gimbal displacement increasing  the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range  which had to be limited strictly in the gimbal design process. 2011 IEEE.   LEFT-HANDNESS IN A FOUR-LEVEL ATOMIC SYSTEM 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2009, 卷号: 7, 页码: 747-754 作者:  Zhao, Shuncai;  Liu, Zhengdong   |  收藏  |  浏览/下载：25/0  |  提交时间：2018/05/31 Quantum coherence  negative refraction index  left-handness  atomic system   大气反常折射对星表和参考系的影响 期刊论文  OAI收割 陕西天文台台刊, 1998, 期号: 1, 页码: 59-64 李德河 收藏  |  浏览/下载：29/0  |  提交时间：2012/07/10 Abnormal Atmospheric Refraction  Catalogues  Reference System   Optical bistability via a phase fluctuation effect of the control field 期刊论文  OAI收割 PHYSICS LETTERS A, 1996, 卷号: 222, 期号: 4, 页码: 237 Gong, SQ; Du, SD; Xu, ZZ; Pan, SH 收藏  |  浏览/下载：17/0  |  提交时间：2013/09/24 ELECTROMAGNETICALLY INDUCED TRANSPARENCY  QUANTUM COHERENCE  INDEX ENHANCEMENT  INVERSION LASER  RING CAVITY  INTERFERENCE  REFRACTION  ABSORPTION  SYSTEM