机构

• 长春光学精密机械与物... [3]
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• OAI收割 [9]
• iSwitch采集 [1]

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• 期刊论文 [7]
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• 天文学 [1]
• 天文学::射电天文学 [1]
• 天文学::射电天文学... [1]

筛选

浏览/检索结果: 共10条，第1-10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 云南天文台40米射电望远镜C波段谱线观测技术与方法研究 学位论文  OAI收割 北京: 中国科学院大学, 2020 作者:  张燕坤   |  收藏  |  浏览/下载：35/0  |  提交时间：2022/08/02 射电天文  分子谱线  频谱校正  射电望远镜  OTF观测   Phosphine oxide-Sc(OTf)(3) catalyzed enantioselective bromoaminocyclization of tri-substituted allyl N-tosylcarbamates 期刊论文  OAI收割 SCIENCE CHINA-CHEMISTRY, 2018, 卷号: 61, 期号: 6, 页码: 656-659 作者:  Tan, Xiangyu;  Pan, Hongjie;  Tian, Hua;  Shi, Yian   |  收藏  |  浏览/下载：41/0  |  提交时间：2019/04/09 Asymmetric Bromonation  Bromoaminocyclization  Phosphine Oxide-sc(Otf)(3)  5-bromo-1  3-oxazinan-2-ones   THz Vector Field Measurement Comparison Between On-the-Fly and Step Scan Method 期刊论文  OAI收割 IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2017, 卷号: 7, 期号: 1, 页码: 27-35 作者:  Hu, Jie;  Lou, Zheng;  Yao, Qi-Jun;  Miao, Wei;  Yang, Jin-Ping   |  收藏  |  浏览/下载：35/0  |  提交时间：2019/04/08 Antenna  on-the-fly (OTF)  terahertz (THz)  vector near-field measurement   Research on image restoration of Roll-Swing imaging seeker (EI CONFERENCE) 会议论文  OAI收割 3rd IEEE International Conference on Advanced Computer Control, ICACC 2011, January 18, 2011 - January 20, 2011, Harbin, China 作者:  Zhang H.;  Zhang H. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 To achieve a correct image receiving for Roll-Swing imaging seeker  the mechanism and imaging process is analyzed. The causes of image rotation are discussed. The influence of the frame encoders' precision on imaging de-rotation quality is analyzed. The Roll-Swing imaging seeker is designed for high-speed aerocraft  thus the received images are greatly degraded due to atmospheric turbulence. A new method of image restoration is proposed for turbulence-degraded images in this paper. The method is to get point spread function (PSF) based on the estimation of optical transfer function (OTF) according to the optical system design simulation. Finally  to obtain the restored image  constrained least squares filtering is used with the known PSF. The experiment results indicate that the new restoration method has a favorable effect to satisfy requirement of the automatic target recognition. 2011 IEEE.   Rh(ii) and zn(ii) co-catalyzed multi-component reaction for the synthesis of vicinal diols 期刊论文  iSwitch采集 Chinese chemical letters, 2009, 卷号: 20, 期号: 11, 页码: 1299-1302 作者:  Zhang, Xu;  Guo, Xin;  Yang, Li Ping;  Hu, Wen Hao 收藏  |  浏览/下载：17/0  |  提交时间：2019/05/10 Multi-component reaction  Alpha-diazocarbonyl compounds  Zn(otf)(2)  Alpha-dicarbonyl compounds   On orbit MTF measurement of remote sensing camera based on wavelet transform (EI CONFERENCE) 会议论文  OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang X.;  Wang X.;  Wang X. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 High resolution remote sensing images are often applied in many research fields. But there are less research on images quality for an orbit remote sensing camera. The magnitude of the OTF  as the modulation transfer function (MTF)  is a measure of the 2-D spatial frequency response of the remote sensing camera. In this paper  knife-edge technique based on quadratic spline wavelet fast transform algorithm is proposed and applied to generate MTF with a greatly high resolution in horizontal or vertical direction. The result has fully demonstrate the potential applicability and good property of the method to estimate MTF for remote sensing camera.   Analysis of optical systems with extended depth of field using the Wigner distribution function 期刊论文  OAI收割 appl. optics, 2006, 卷号: 45, 期号: 34, 页码: 8586, 8595 Yang Qingguo; 刘立人; 孙建锋; Zhu Yongjian; Lu Wei 收藏  |  浏览/下载：1230/197  |  提交时间：2009/09/18 PHASE-SPACE DISTRIBUTIONS  HIGH FOCAL DEPTH  IMAGING-SYSTEMS  AMBIGUITY FUNCTION  APERTURES  PLATE  FOCUS  OTF   In(OTf)(3)-catalyzed Friedel-Crafts reaction of aromatic compounds with methyl trifluoropyruvate in water 期刊论文  OAI收割 SYNLETT, 2004, 期号: 3, 页码: 555-557 作者:  Ding, R;  Zhang, HB;  Chen, YJ;  Liu, L;  Wang, D   |  收藏  |  浏览/下载：15/0  |  提交时间：2019/04/09 In(Otf)(3) Catalyst  Friedel-crafts Reaction  Methyl Trifluoropyruvate  Water  Cf3-substituted Compound   一种用于GPS整周模糊度OTF求解的整数白化滤波改进算法 期刊论文  OAI收割 武汉大学学报(信息科学版), 2004, 期号: 11, 页码: 960-963 任超; 欧吉坤; 袁运斌 收藏  |  浏览/下载：18/0  |  提交时间：2012/02/13 GPS载波相位  整周模糊度  OTF算法  整数白化滤波  搜索  取整   粗糙波面光学传递函数像质评价准则和粗糙度公式理论 期刊论文  OAI收割 光学学报, 1997, 期号: 01, 页码: 47-54 作者:  向阳 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/11 光学传递函数（OTF）  表面粗糙度  像质评价