QQ客服 官方微博 反馈留言

浏览/检索结果: 共6条，第1-6条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Inspecting unattended irrigation canals of dujiangyan in mountainous area with UAV remote sensing technology 会议论文 Istanbul, July 16, 2019 - July 19, 2019 作者:  Lin Jiayuan;  Zhou Xingxia;  Deng Shunjie;  Du Xiaolin;  Wang Meimei 收藏  |  浏览/下载：47/0  |  提交时间：2019/12/30 Aerial triangulation  Current status  Financial resources  Irrigation systems  Manual inspection  Mountainous area  Sichuan Basin  UAV remote sensing   A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C. 收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25 In order to ensure appropriate exposure time  and no exposure while electric charge is transferring after taking a photograph  it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx  so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle  structural design and control procedure about this new focal plane shutter. Under the control of DSP  the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled  but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement  long life span with more than 105 operating times  a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment  the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.   Influence of the TDI CCD camera takes pictures when high resolution satellite lateral swaying (EI CONFERENCE) 会议论文 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009, August 9, 2009 - August 12, 2009, Changchun, China Yang X.; Zhong X.; Jin G.; Zhang L.; Sun Z. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 When the satellite was swinging and taking lateral imaging  the TDI CCD pixel photovoltaic charge purses transferred velocity not matched with the image motion velocity. According to the requirement of high-resolution satellite which was taking lateral imaging at a low orbit  the factors that bring about the unmatched phenomenon were analysed  inclusive of the Earth's rotation  the Earth curvature  satellite attitude change  measurement error and the installation error  etc. Image motion errors caused by various factors were analysed and solved  and the different characters of image motion errors were synthesized. Finally  the total errors on the impact of imaging system MTF was analyzed. 2009 IEEE.   Rotational reorientation dynamics of oxazine 750 in polar solvents 会议论文 the 12th international symposium of stereodynamics of chemical reactions, 中国, 2008-10-13 周潘旺; 宋辉; 刘建勇; 石英; 韩克利; 何国钟 收藏  |  浏览/下载：14/0  |  提交时间：2011/07/11 Modification of defects induced by nuclear collisions in Fe and Ni in electronic stopping power regime 会议论文 作者:  Wang, ZG;  Dufour, C;  Jin, YF;  Hou, MD;  Jin, GM 收藏  |  浏览/下载：14/0  |  提交时间：2018/08/20 electronic energy loss  thermal spike  vacancy and interstitial  defect production and annealing  damage efficiency  recombination cross section   Modification of defects induced by nuclear collisions in Fe and Ni in electronic stopping power regime 会议论文 作者:  Wang, ZG;  Dufour, C;  Jin, YF;  Hou, MD;  Jin, GM 收藏  |  浏览/下载：17/0  |  提交时间：2018/08/20 electronic energy loss  thermal spike  vacancy and interstitial  defect production and annealing  damage efficiency  recombination cross section