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	New nuclear facilities and their analytical applications in China 期刊论文 OAI收割 RADIOCHIMICA ACTA, 2014, 卷号: 102, 期号: 1-2, 页码: 3-11 作者: Zhang ZY(张智勇); He X(何潇); Ma YH(马宇辉); Ding YY(丁雅韵); 柴之芳;Zhang, ZY 收藏 \| 浏览/下载：18/0 \| 提交时间：2016/04/08 Radioanalytical techniques Large scientific facilities National demands Key scientific issues
	Chirp estimation of PZT for integrating-bucket method (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang J.; Liu W.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 The nonlinear response of the PZT for the integrating bucket method is studied by our proposed method: discrete chirp Fourier transform (DCFT) and maximum likelihood estimation (MLE) techniques for the integrating bucket method. Based on the signal processing theory the intensity obtained from CCD is processed by the DCFT and thus nonlinear response and chirp coefficient of the PZT can be coarsely estimated. This is followed by the MLE method in which an iterative optimization process is complemented for accurately estimating the nonlinear response and chirp coefficient of the PZT. One key advantage of the proposed method is that not only the nonlinear response and chirp coefficient of the PZT can be acquired but also initial phase acquired. Our method is tested by simulating conditions under which a certain magnitude of nonlinearity is assumed. Nonlinear response attained by the DCFT is compared to that attained by the MLE and a difference between the actual nonlinear response of the PZT and our accurate estimation by the proposed method is revealed. Several factors that will have influence on the nonlinear response of the PZT are discussed. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Fabrication of Nanoscale Line Width Using the Improved Optical Maskless Lithographic System 期刊论文 OAI收割 JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, 2009, 卷号: 6, 期号: 5, 页码: 1170-1174 作者: Jiang, Wenbo; Hu, Song; Zhao, Lixin; Yan, Wei; Yang, Yong 收藏 \| 浏览/下载：26/0 \| 提交时间：2015/09/21 Maskless Lithography Key Techniques Lithographic Experiment Nanoscale
	A new authentication protocol for wireless communication network based on IEEE802.16 (EI CONFERENCE) 会议论文 OAI收割 2008 International Symposium on Parallel and Distributed Processing with Applications, ISPA 2008, December 10, 2008 - December 12, 2008, Sydney, NSW, Australia Li R.; Fang Z.; Cao W.; Yin Y.; Xu P. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 After analyzing the specific security requirements of the wireless communication network based on IEEE802.16 a series of key issues about security methods and techniques were researched. A new authentication protocol for wireless mobile environment was proposed and designed. Then its security was analyzed from the angle of technical realization and formal analysis to verify whether the original safety goals were achieved. Especially formal analysis was mostly done. Finally system testing was also carried out and the results were analyzed to verify function and performance of the new protocol. 2008 IEEE.
	基于电光材料的光学相控阵技术研究进展期刊论文 OAI收割中国激光, 2008, 卷号: 35, 期号: 12, 页码: 1861, 1867 瞿荣辉; 叶青; 董作人; 方祖捷收藏 \| 浏览/下载：1148/177 \| 提交时间：2009/09/18 光学器件 Basic principles 光学相控阵技术 Basic structures 电光材料 Electro-optic material 激光雷达系统 Key techniques Laser radars Lead lanthanum zirconate titanates Optical phased array technology Optical Phased arrays Surface electrodes Technology based
	Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China Liang F.; Hu J. 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/03/25 The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS several key techniques as follows are introduced. Firstly the unique system configuration four axes mutually intersecting at the center of the SS is adopted which ensures the shape of the focus be maintained circular during the writing period. Secondly an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly to guarantee the linear velocity to accord with the exposure character of the photoresist all the time an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m and the steep sides of the lines are parallel to each other.
	A new synchronization control circuit based on CPLD for the laser range-gated imaging system (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Guo J.; Guo J.; Wang X.; Wang X.; Wang X. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 The synchronization control technique is one of the most key techniques in the laser range gated (LRG) imaging system. Conventional control circuits are composed of discrete components and Medium Scale Integration (MSI) and Small Scale Integration (SSI) which have bad reliability and poor ability of anti-interference. The idea of using the Complex Programmable Logic Device (CPLD) to realize the monostable trigger circuit is introduced. On the basis of analyzing the performance requirement to the synchronization control of the laser range gated imaging system a new synchronization control circuit based on CPLD is presented. The circuit based on CPLD is very compact and flexible and has high reliability and strong ability of anti-interference. The synchronization control circuit based on CPLD can provide a wide selection of gate widths pulse widths and delays. The synchronization control circuit is successfully used in our experiment and the expected result is obtained.