中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories 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7条,第1-7条 帮助

条数/页: 排序方式:
Manifold Warp Segmentation of Human Action 期刊论文  OAI收割
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, 2018, 卷号: 29, 期号: 5, 页码: 1414-1426
作者:  
Liu, Shenglan;  Feng, Lin;  Liu, Yang;  Qiao, Hong;  Wu, Jun
  |  收藏  |  浏览/下载:28/0  |  提交时间:2018/01/06
Pedestrian detection based on fusion of millimeter wave radar and vision 会议论文  OAI收割
Beijing, China, August 18-20, 2018
作者:  
Guo XP(郭晓鹏);  Gao J(高洁);  Wang W(王伟);  Du JS(杜劲松)
  |  收藏  |  浏览/下载:57/0  |  提交时间:2018/12/24
Regression Reformulations of LLE and LTSA With Locally Linear Transformation 期刊论文  OAI收割
IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART B-CYBERNETICS, 2011, 卷号: 41, 期号: 5, 页码: 1250-1262
作者:  
Xiang, Shiming;  Nie, Feiping;  Pan, Chunhong;  Zhang, Changshui
收藏  |  浏览/下载:21/0  |  提交时间:2015/08/12
口语测试自动评估技术研究 学位论文  OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2009
作者:  
江杰
收藏  |  浏览/下载:127/0  |  提交时间:2015/09/02
Method for computer-aided alignment of complex optical system (EI CONFERENCE) 会议论文  OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
作者:  
Yu J.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
For making complex optical system meet the design requirement  such as the space camera used in remote sensing and UVX lithophotography  especially for off-axis all-reflecting optical system  alignment technology is so necessary. In this paper  a method is presented. Based on the ideas of linearity instead of non-linearity and difference quotient instead of differential quotient  a mathematical model for computer-aided alignment is proposed. This model included the characteristics of the optical system  wavefront difference of its exit pupil and its misalignment of the misaligned optical system. Then comparing self-compiled software with alignment package of CODE V  as a result  this self-compiled software is much more valid than alignment package of CODE V. For a large aperture  long focal length and off-axis three-mirror optical system  computer-aided alignment is successful. Finally  the wavefront error of the middle field is 0.094 waves RMS and the wavefront error of +0.7 field is 0.106 waves RMS and the wavefront error of -0.7 field is 0.125 waves RMS at =632.8nm are obtained.  
ICF靶场中光束口径与列阵间隔的研究 期刊论文  OAI收割
光子学报, 2005, 卷号: 34, 期号: 12, 页码: 1766, 1768
王聪瑜; 刘志刚; 庞向阳; 汤更秀; 朱健强
收藏  |  浏览/下载:1475/300  |  提交时间:2009/09/18
Study on optical parts of MOEMS optical switch with low insertion loss (EI CONFERENCE) 会议论文  OAI收割
MEMS/MOEMS Technologies and Applications II, November 10, 2004 - November 12, 2004, Beijing, China
作者:  
Wang W.;  Wang L.;  Wang L.;  Wang L.;  Chen W.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
We study insertion losses of optical switch when the laser beam is propagating during the free space between two single mode fibers (SMFs) and the related assemblage challenges  Then a new packaging structure is developed for the hybrid-integration of free-space MOEMS (micro-opto-electro-mechanical systems) chip with a silicon micromachined submount to improve alignment accuracy. The submount is designed to accommodate various free-space MOEMS chips with minimal active optical alignment  thus reducing the packaging cost. The silicon submount has a central recess to place the MOEMS chip in  sixteen V-grooves for optical fibers  and micropits for micro ball lenses  all bulk micromachined at the same time by a single anisotropic wet etching step. A corner compensation technique is employed to prevent erosion of the convex corners  where different geometries meet. Through this assembling method  the fiber  micro ball lens can be aligned preciously thus reduced lateral and angular misalignment between them. Then total insertion losses can be decreased.