机构

• 地理科学与资源研究所 [1]
• 长春光学精密机械与物... [1]
• 寒区旱区环境与工程研... [1]
• 中国科学院大学 [1]

采集方式

• iSwitch采集 [2]
• OAI收割 [2]

内容类型

• 期刊论文 [2]
• SCI/SSCI论文 [1]
• 会议论文 [1]

发表日期

• 2007 [2]
• 2006 [1]
• 2003 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4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 the affect of differential-images technique to the resolution of infrared spatial camera (EI CONFERENCE) 会议论文  OAI收割 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China Jin G.; An Y.; Qi Y.; Hu F. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 The optical system of infrared spatial camera adopts bigger relative aperture and bigger pixel size on focal plane element. These make the system have bulky volume and low resolution. The potential of the optical systems can not be exerted adequately. So  one method for improving resolution of infrared spatial camera based on multi-frame difference-images is introduced in the dissertation. The method uses more than one detectors to acquire several difference images  and then reconstructs a new high-resolution image from these images through the relationship of pixel grey value. The technique of difference-images that uses more than two detectors is researched  and it can improve the resolution 2.5 times in theory. The relationship of pixel grey value between low-resolution difference-images and high-resolution image is found by analyzing the energy of CCD sampling  a general relationship between the enhanced times of the resolution of the detected figure with differential method and the least count of CCD that will be used to detect figure is given. Based on the research of theory  the implementation process of utilizing difference-images technique to improve the resolution of the figure was simulated used Matlab software by taking a personality image as the object  and the software can output the result as an image. The result gotten from the works we have finished proves that the technique is available in high-resolution image reconstruction. The resolution of infrared spatial camera can be improved evidently when holding the size of optical structure or using big size detector by applying for difference image technique. So the technique has a high value in optical remote fields.   Influence of leaf water potential on diurnal changes in CO2 and water vapour fluxes SCI/SSCI论文  OAI收割 2007 作者:  Wang J.;  Wang J.;  Yu Q. 收藏  |  浏览/下载：27/0  |  提交时间：2012/06/08 CO2 flux  leaf water potential  North China Plain  water vapour flux  winter wheat  stomatal conductance  carbon assimilation  canopy conductance  available  energy  use efficiency  land surfaces  winter-wheat  2-leaf model  photosynthesis  transpiration   Some characteristics of the atmosphere during an adiabatic process 期刊论文  iSwitch采集 Progress in natural science, 2006, 卷号: 16, 期号: 6, 页码: 644-648 作者:  Gao Li;  Li Jianping;  Ren Hongli 收藏  |  浏览/下载：38/0  |  提交时间：2019/05/10 Available potential energy  Adiabatic  Isentropic surface  Atmospheric reference state  Conditional minimum total potential energy   Lightning activity on the central Tibetan Plateau and its response to convective available potential energy 期刊论文  iSwitch采集 CHINESE SCIENCE BULLETIN, 2003, 卷号: 48, 期号: 3, 页码: 296-299 作者:  Qie, XS;  Toumi, R;  Zhou, YJ 收藏  |  浏览/下载：30/0  |  提交时间：2019/10/08 Tibetan Plateau  lightning activity  optical radiance  convective available potential energy