中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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典型机动目标跟踪与精确预测技术 学位论文  OAI收割
工程硕士, 中国科学院自动化研究所: 中国科学院研究生院, 2012
作者:  
张峰;  张峰
收藏  |  浏览/下载:55/0  |  提交时间:2015/09/02
A New Multiple-Round Dimension-Order Routing for Networks-on-Chip 期刊论文  OAI收割
IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, 2011, 卷号: E94D, 期号: 4, 页码: 809-821
作者:  
Fu, Binzhang;  Han, Yinhe;  Li, Huawei;  Li, Xiaowei
  |  收藏  |  浏览/下载:27/0  |  提交时间:2019/12/16
The study of two FOG filter methods in improving the precision of servo control system (EI CONFERENCE) 会议论文  OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者:  
Zhang Y.;  Zhang L.-G.;  Zhang L.-G.
收藏  |  浏览/下载:18/0  |  提交时间:2013/03/25
Preliminary application of turn-by-turn data analysis to the SSRF storage ring 期刊论文  OAI收割
CHINESE PHYSICS C, 2009, 卷号: 33, 期号: 7, 页码: 4
Chen, JH(陈建辉); Zhao, ZT(赵振堂)
收藏  |  浏览/下载:29/0  |  提交时间:2012/04/11
An improved two-dimensional entropy method for star trail tracing in deep sky (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Wang Y.-J.;  Yao Z.-J.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
The trace of star trail is an important component of deep sky detection. The stars are low contrast targets  and their self-rotation will make their brightness change in cycle. Above all  the trail trace is vulnerable to the block and disturbance of other stars. Traditional one-dimensional maximum entropy thresholding algorithm is vulnerable to the noise  and the calculation of two-dimensional entropy methods is too large and takes too much time. This paper proposes an improved two-dimensional entropy threshold algorithm. We use recursion iteration method to eliminate the redundancy calculation  and reduce the size of two-dimensional histogram based on the deep sky stars characteristic  such as low contrast  fuzziness and the centralized histogram. We also combine our algorithm with the space trail trace model to forecast the star trace. Experiments results show  when the star are blocked or they turn dark  the method still can well extrapolate the star trace. Our method improves the capability of trailing the ebb and small star  and increases the precision of tracing. It is also robust to the noise  so there is a good application foreground for the method.  
Method for the fabrication of isometric mesh on the concave of a spherical substrate (EI CONFERENCE) 会议论文  OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies, November 2, 2005 - November 5, 2005, Xian, China
作者:  
Feng X.-G.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Metallic mesh has been widely used in electromagnetic interference windows. While the duty ratio of curved mesh equals to planar mesh'  the theory of planar mesh may be applied to curved mesh according to equivalent-circuit model. So the idea that latitude lines intersect latitude lines to form isometric mesh on the concave of a sphere is put forward  and the method of fabricating the mesh by concentric optical scan is introduced. The movement parts of equipment consist of an erection turning  a horizontal dividing and a pitching dividing spindle. Firstly  a spherical substrate is fixed on the horizontal dividing spindle that has been set horizontally on the erect turning spindle  the substrate revolves around the axis of the erect spindle  the tube of object lens that is fixed on the pitching dividing spindle steps at pitching direction  and a revolving circuit of the substrate corresponds to a step of the tube. Gradually  a set of latitude lines is attained. Afterward  the substrate makes a quarter turn around the horizontal spindle  another orientation latitude lines are also gained. Thus  the isometric mesh on the concave of a spherical substrate is gained. The process comprises surface cleaning  coating photoresist  laser direct writing  development  evaporated film  dissolving photoresist and plating. The fabricated spherical mesh has a line width of 7 m and a period of 600m. Experiment shows that infrared transmission and electromagnetism shield efficiency of the metallic mesh are relatively consistent with theoretical value.