中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共3条，第1-3条 帮助

条数/页： 排序方式：
Estimation and analysis of net primary Productivity of Ruoergai wetland in China for the recent 10 years based on remote sensing 会议论文  OAI收割
Biennial International Conference on Ecological Informatics and Ecosystem Conservation (ISEIS), Beijing, PEOPLES R CHINA, 2010-8-27～29
作者:  Jinhu Bian;  Ainong Li;  Wei Deng
收藏  |  浏览/下载：23/0  |  提交时间：2013/05/29
Study on chromaticity balance for LED exposure system (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2007 - Laser, Ultraviolet, and Terahertz Technology, September 9, 2007 - September 12, 2007, Beijing, China
作者:  Meng Z.;  Meng Z.
收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25
A standard white light compounding algorithm based on combination of CCD illumination acquisition with computer control is presented for LEDs. The computer adjust and control the working current of LEDs by using three-color LEDs illumination acquired by CCD camera  achieved chromaticity coordinates error between compounded white light and standard white light D65 less than the threshold beforehand setted by this technique  then acquiring needed standard white light. Compounded white light meet the chromaticity error demand that is able to be changed  at the same time the CCD illumination acquisition system is eliminated. The proposed algorithm improved the light energy utilization efficiency of LED  and eliminated the offset of central wavelength and chromaticity coordinates due to work current change of LEDs. Experimental results show that the proposed algorithm achieved lesser chromaticity error uv=0.001 relative to standard white light D65  enhanced chromaticity uniformity of illumination field.  
A new net primary production estimating model using NOAA-AVHRR applied to the Haihe Basin, China 会议论文  OAI收割
Wuhan, OCT 28-29, 2006
作者:  Xu Xingang;  Wu Bingfang;  Li Qiangzi;  Meng Jihu;  Zhang Fengli
  |  收藏  |  浏览/下载：29/0  |  提交时间：2020/02/13