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浏览/检索结果: 共8条,第1-8条 帮助

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Non-collinear phase-matching geometries in optical parametric chirped-pulse amplification 期刊论文  OAI收割
opt. commun., 2014, 卷号: 330, 页码: 24
作者:  
Guo, Xiaoyang;  Xu, Yi;  Zou, Xiao;  Lu, Xiaoming;  Li, Yanyan
收藏  |  浏览/下载:18/0  |  提交时间:2016/11/28
Non-collinear phase-matching geometries in optical parametric chirped-pulse amplification 期刊论文  OAI收割
opt. commun., 2014, 卷号: 330, 页码: 24
作者:  
Guo, Xiaoyang;  Xu, Yi;  Zou, Xiao;  Lu, Xiaoming;  Li, Yanyan
收藏  |  浏览/下载:43/0  |  提交时间:2016/11/28
High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者:  
Jin L.-X.;  Zhang K.;  Zhang K.;  Zhang K.;  Zhang K.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore  According to this method  a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft  to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth  of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.  
Phase-matched high-order harmonic generation in a gas cell with midinfrared femtosecond pulses 期刊论文  OAI收割
physical review a, 2009, 卷号: 79, 期号: 1, 页码: 013802
Fu YX(付玉喜); Xiong H(熊辉); Xu H(徐晗); Yao JP(姚金平); Yu YL(于永丽); Ceng B(曾斌); Chu Y(储蔚); Liu XJ(柳晓军); Chen J(陈京); Cheng Y(程亚); Xu ZZ(徐至展)
收藏  |  浏览/下载:932/163  |  提交时间:2010/04/21
An image matching algorithm based on sub-block coding (EI CONFERENCE) 会议论文  OAI收割
2nd International Workshop on Computer Science and Engineering, WCSE 2009, October 28, 2009 - October 30, 2009, Qingdao, China
作者:  
Li S.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
In order to improve the speed of matching algorithm and simplify the processing of existing sub-block coding matching  a new template matching method combined local gray value encoding matching and phase correlation is proposed. Matching process is divided into rough matching and fine matching. Rough matching divides the image into certain size blocks called R-block  sums the gray value of each R-block pixel  encodes the R-block according to the gray value distribution of R-block with the adjacent R-block  and matches by step between the template and each search sub-image. Then  fine matching results are obtained using phase correlation according to initial match parameters. The time complexity of the proposed method is (M2) .The new algorithm is faster than traditional algorithm by two orders of magnitude  and the speed has improved twice compared with existing sub-block coding method. Experiments demonstrate that the new algorithm is robust to the linear transformation of pixel grey value and image noise  and it also has the stability of small-angle rotation. 2009 IEEE.  
Broadband high-gain optical parametric chirped-pulse amplification near 780 nm with LBO-I near-degenerate near-collinear phase match 期刊论文  OAI收割
opt. eng., 2005, 卷号: 44, 期号: 7, 页码: 74201
冷雨欣; Wang C; Zhao BZ; 梁晓燕; Zhang ZQ; Wang WY; Jiang YH; 林礼煌; 李儒新; 徐至展
收藏  |  浏览/下载:1865/86  |  提交时间:2009/09/18
Broadband high-gain optical parametric chirped-pulse amplification near 780 nm with LBO-I near-degenerate near-collinear phase match 期刊论文  OAI收割
opt. eng., 2005, 卷号: 44, 期号: 7, 页码: 74201
冷雨欣; Wang C; Zhao BZ; 梁晓燕; Zhang ZQ; Wang WY; Jiang YH; 林礼煌; 李儒新; 徐至展
收藏  |  浏览/下载:1098/126  |  提交时间:2009/09/18
异层集成电路显微图像对准与线网自动跟踪 学位论文  OAI收割
工学硕士, 中国科学院自动化研究所: 中国科学院自动化研究所, 1999
作者:  
丁迎
收藏  |  浏览/下载:54/0  |  提交时间:2015/09/02