中国科学院机构知识库网格系统: 检索

基于衬底集成空心波导的气体检测性能研究 期刊论文 OAI收割
量子电子学报, 2023, 卷号: 40
作者: 黄文彪; 方勇华; 刘家祥; 司赶上; 李振钢

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收藏 | 浏览/下载：10/0 | 提交时间：2024/11/20

waveguide optics Fourier transform infrared spectrometer substrate-integrated hollow waveguide gas detection geometric parameter 波导光学傅里叶变换红外光谱衬底集成空心波导气体检测几何参数

The design of atmosphere polarimetry sensing with multi-bands 期刊论文 OAI收割
Optics Communications, 2018, 卷号: 410, 页码: 863-866
作者: Dou, C. H.; Wang, S. R.; Zhang, Z. H.; Huang, Y.; Yang, X. H.

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收藏 | 浏览/下载：23/0 | 提交时间：2019/09/17

Polarimetric imaging Geometric optical design Remote sensing and sensors Lens system design cloud Optics

Residual aberration correction method of the three-mirror anastigmat (TMA) system with a real exit pupil using freeform surface 期刊论文 OAI收割
Optics and Laser Technology, 2018, 卷号: 106, 页码: 100-106
作者: Meng, Q. Y.; Wang, H. Y.; Yan, Z. Q.

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收藏 | 浏览/下载：24/0 | 提交时间：2019/09/17

Geometric optical design Optical freeform surface Mirror system design Aberration compensation front fog lamp design method telescope field integration mirror Optics Physics

Back propagation method for GPS radio occultation data 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2011, 卷号: 54, 期号: 9, 页码: 2193-2200
作者: Xu Xian-Sheng; Huang Si-Xun; Guo Peng; Hong Zhen-Jie

收藏 | 浏览/下载：35/0 | 提交时间：2015/08/19

GPS/LEO radio occultation Atmospheric multipath Back propagation method Geometric optics method Multiple-phase-screen model

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：39/0 | 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.

Design of aspherical surfaces for panoramic imagers using multipopulations genetic algorithm (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Jin C.-S.; Wang L.-P.; Liang Z.-Z.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

A design method of aspherical surface for panoramic imaging system with two mirrors using multi-populations genetic algorithms is proposed. Astigmatism induced by mirrors may significantly compromise image resolution. To solve this problem we induced algebraic expression of astigmatism in panoramic imager based on generalized Coddington equation and theory of geometric optics. Then we propose an optimization process for mirror profile design to eliminate astigmatism and provide purposely-designed projection formula with aid of MPGA. A series of polynomial expressions of aspherical surfaces are obtained and procedures of the design are presented. In order to facilitate ray tracing and aberration calculation even asphere surface model is obtained by using of hybrid schemes combining MPGA and damped least squares. Finally a prototype of the catadioptric panoramic imager has been developed and panoramic ring image is obtained. 2009 SPIE.

Estimating leaf area index by inversion of reflectance model for semiarid natural grasslands 期刊论文 iSwitch采集
Science in china series d-earth sciences, 2009, 卷号: 52, 期号: 1, 页码: 66-84
作者: Zhang Na; Zhao YingShi

收藏 | 浏览/下载：33/0 | 提交时间：2019/05/10

Leaf area index Plant crown shape Geometrical similarity parameter Reflectance model Radiative transfer Geometric optics Inversion Semiarid natural grassland

Preliminary analysis of error characteristics in atmospheric inversion of GPS radio occultation 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2007, 卷号: 50, 期号: 4, 页码: 1017-1029
作者: Gong Xiao-Yan; Hu Xiong; Wu Xiao-Cheng; Zhang Xun-Xie

收藏 | 浏览/下载：33/0 | 提交时间：2015/09/06

GPS atmospheric occultation the Earth's oblateness ionosphere calibration inversion method of geometric optics inversion error

Study on extraction method of phase information in X-ray diffraction enhanced Imaging 期刊论文 OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2005, 卷号: 29, 页码: #REF!
作者: Huang, ZF; Li, Z; Kang, KJ; Zhu, PP; Yuan, QX

收藏 | 浏览/下载：20/0 | 提交时间：2016/04/12

diffraction enhanced imaging geometric-optics approximation rocking curve synchrotron radiation

展宽器元件失调及带通分析 期刊论文 OAI收割
中国激光, 2005, 卷号: 32, 期号: 2, 页码: 170, 174
杨鑫; 谢兴龙; 李美荣; 邵敏; 高奇; 薛志玲

收藏 | 浏览/下载：2139/385 | 提交时间：2009/09/18

几何光学超短脉冲展宽器啁啾脉冲放大群速度色散 geometric optics ultrashort pulse stretcher chirped pulse amplification group velocity dispersion