中国科学院机构知识库网格系统: 检索

Video Image Acquisition System Based on S3C6410 会议论文 OAI收割
Conference Location, 2013
作者: Zhao J.; Sui L.

收藏 | 浏览/下载：13/0 | 提交时间：2014/05/22

Earth elevation map production and high resolution sensing camera imaging analysis 会议论文 OAI收割
2010
作者: Dai L.

收藏 | 浏览/下载：9/0 | 提交时间：2013/03/28

Earth elevation map production and high resolution sensing camera imaging analysis (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者: Dai L.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

The Earth's digital elevation which impacts space camera imaging has prepared and imaging has analysed. Based on matching error that TDI CCD integral series request of the speed of image motion statistical experimental methods-Monte Carlo method is used to calculate the distribution histogram of Earth's elevation in image motion compensated model which includes satellite attitude changes orbital angular rate changes latitude longitude and the orbital inclination changes. And then elevation information of the earth's surface from SRTM is read. Earth elevation map which produced for aerospace electronic cameras is compressed and spliced. It can get elevation data from flash according to the shooting point of latitude and longitude. If elevation data between two data the ways of searching data uses linear interpolation. Linear interpolation can better meet the rugged mountains and hills changing requests. At last the deviant framework and camera controller are used to test the character of deviant angle errors TDI CCD camera simulation system with the material point corresponding to imaging point model is used to analyze the imaging's MTF and mutual correlation similarity measure simulation system use adding cumulation which TDI CCD imaging exceeded the corresponding pixel horizontal and vertical offset to simulate camera imaging when stability of satellite attitude changes. This process is practicality. It can effectively control the camera memory space and meet a very good precision TDI CCD camera in the request matches the speed of image motion and imaging. 2010 SPIE.

A Novel Element of Frequency Selective Surfaces for Stealth Radome 会议论文 OAI收割
2010
作者: Chen X.; Chen X.; Chen X.

收藏 | 浏览/下载：11/0 | 提交时间：2013/03/28

High power VCSEL device with periodic gain active region - art. no. 67820O 会议论文 OAI收割
2007
作者: Sun Y.; Wang L.; Wang L.; Wang L.; Liu Y.

收藏 | 浏览/下载：7/0 | 提交时间：2013/03/28

High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
作者: Zhang Y.; Liu Y.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.

Automatic spin coater for concave spherical substrate - art. no. 67240U 会议论文 OAI收割
2007
Liang F. C.; Gao J. S.; Feng X. G.; Zhao J. L.; Xu Z. J.; Hu J.; Xu F. L.; Wang H. Q.; Liu X. H.

收藏 | 浏览/下载：5/0 | 提交时间：2013/03/28

Fabrication of vertical coupled polymer microring resonator - art. no. 60251F 会议论文 OAI收割
2006
Deng W. Y.; E S. L.; Sun D. G.; Wang P. F.; Zhang D. M.; Xu W.

收藏 | 浏览/下载：9/0 | 提交时间：2013/03/28

Optoelectronic non-contact measuring method for the taper of a bore (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者: Zhang G.; Zhang G.; Zhang G.; Yang L.; Yang L.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

Based on laser optical triangulation displacement and grating displacement inspecting principle optoelectronic non-contact inspecting method and inspecting system for the taper of small-calibre bore are presented. In this paper the constitute and overall structure of the system are described. Then the taper inspecting method and principle of the bore are discussed and theoretically analyzed and also the corresponding mathematics model is established. As inner diameter measurement is an important parameter for the taper of small-bore an inner diameter laser non-contact measuring method is presented based on the structure characteristic of the taper of small-calibre bore which adopted optoelectronic probe sensitive device (PSD) and laser optical triangulation inspecting principle. And then the laser probe inner diameter measuring system is designed based them. Moreover the measuring principle the project of optical system of this measuring system are illuminated in detail in this article. The accuracy of inspecting system is verified by experiment. The results showed that the measuring error of inspecting system is superior to 0.005 and the inspecting repetition is superior to 0.003. It indicates that the system can fulfill the inspecting accuracy demand for inspecting the taper of the small-calibre bore and the inspecting method is applicable.

Research on laser on-line thickness measuring of float glass 会议论文 OAI收割
2003
Xu X. P.; Wang L. M.; Zhang G. Y.; Li C. Z.; Sun H. G.

收藏 | 浏览/下载：8/0 | 提交时间：2013/03/28