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The approximate calculation of atmospheric path radiance in close range and horizontal direction 会议论文  OAI收割
2012 International Conference on Sensors, Measurement and Intelligent Materials, ICSMIM 2012, December 26, 2012 - December 27, 2012, Guilin, China, December 26, 2012 - December 27, 2012
作者:  Sun Z.;  Chen Y.;  Zhang Y.
收藏  |  浏览/下载：10/0  |  提交时间：2014/05/15
Piezoresistivity of polymer-derived AlSiCN ceramics 会议论文  OAI收割
3rd International Conference on Applied Mechanics, Materials and Manufacturing, ICAMMM 2013, August 24, 2013 - August 25, 2013, Dalian, China
Zhang L. G.; Wang Y. S.; An L. N.
收藏  |  浏览/下载：7/0  |  提交时间：2014/05/15
Organogels from unsymmetrical pi-conjugated 1,3,4-oxadiazole derivatives 会议论文  OAI收割
Conference Location, 2013
作者:  Li M.;  Zhang Y.
收藏  |  浏览/下载：22/0  |  提交时间：2014/05/22
The approximate calculation of atmospheric path radiance in close range and horizontal direction (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Sensors, Measurement and Intelligent Materials, ICSMIM 2012, December 26, 2012 - December 27, 2012, Guilin, China
作者:  Sun Z.;  Chen Y.;  Zhang Y.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements  it is compared with the results of MODTRAN and measurement in experiment. It is revealed that the accuracy of software is 7.8%  under the help of the atmospheric observation equipment  and the formula is 4.9%  MODTRAN and other software likewise  which could demonstrate the validity of the pproximate calculation formula in close range and horizontal direction. In this article  the indeterminacy rate could be around 10~20%  in the process of deducing and experiment  it is highly restricts the measurement accuracy of objective radiation. For this reason  the validity of the approximate calculation formula in close range and horizontal direction is fully proved  it is quite significant to develop the study of measure and calculation in path radiance. The approximate calculation formula for path radiance in close range and horizontal direction is expressed in this article  which supply a new method in approximate calculation of path radiance for objective radiation measurement. (2013) Trans Tech Publications  Switzerland.  
Extracting of removal function in CCOS based on edge detection algorithm 会议论文  OAI收割
Conference Location, 2013
作者:  Liu J.;  Liu J.;  Liu J.
收藏  |  浏览/下载：7/0  |  提交时间：2014/05/22
Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文  OAI收割
Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China
作者:  Liu Y.;  Liu Y.;  Qin L.;  Liu Y.;  Wang L.
收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25
Based on the modified coupled-wave theory  the emission characteristics  including threshold gain  photon density distribution in the cavity  and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m  the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating  we can change the two coupling coefficients  which affect the emission characteristics. For an overall consideration  an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides  the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47%  respectively. 2010 SPIE.  
Image Parallel Processing Based on GPU 会议论文  OAI收割
2010
Zhang N.; Wang J. L.; Chen Y. S.
收藏  |  浏览/下载：6/0  |  提交时间：2013/03/28
Theoretical Analysis of Emission Characteristics of Second-order Distributed Feedback Semiconductor Lasers 会议论文  OAI收割
2010
作者:  Liu Y.;  Liu Y.;  Liu Y.;  Qin L.
收藏  |  浏览/下载：11/0  |  提交时间：2013/03/28
Research on tracking approach to low-flying weak small target near the sea - art. no. 60273R 会议论文  OAI收割
2006
Zhang S. Y.; Liu W. N.; Xue X. C.
收藏  |  浏览/下载：9/0  |  提交时间：2013/03/28