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Study on Fracture Morphological Characteristics of Refracturing for Longmaxi Shale Formation 期刊论文
GEOFLUIDS, 2020, 卷号: 2020, 页码: 13
作者:  Guo, Yintong;  Wang, Lei;  Chang, Xin;  Zhou, Jun;  Zhang, Xiaoyu
收藏  |  浏览/下载：12/0  |  提交时间：2021/05/25
Precision Analysis and Experiment of Focusing Mechanism of Space Hyperspectral Camera 期刊论文
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering, 2019, 卷号: 55, 期号: 12, 页码: 29-36
作者:  K.Wang;  M.Xu;  P.Xie;  Z.Xu;  S.Tao
收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24
空间光学成像与激光数传共口径技术研究 学位论文
博士: 中国科学院大学, 2015
作者:  李艳杰
收藏  |  浏览/下载：81/0  |  提交时间：2015/11/30
A laser guide star system for LAMOST 会议论文
Montréal, Quebec, Canada, 2014-6-22
Hua Bai; Xiangyan Yuan; Ming Liang
收藏  |  浏览/下载：51/0  |  提交时间：2015/03/12
复频率参数完全匹配层吸收边界在瞬变电磁法正演中的应用 期刊论文
地球物理学报, 2014
李展辉; 黄清华
收藏  |  浏览/下载：6/0  |  提交时间：2015/10/24
First-principles investigation on high-pressure structural evolution of MnTiO3 期刊论文
固体通讯, 2012
Zhu, Feng; Wu, Xiang; Qin, Shan
收藏  |  浏览/下载：3/0  |  提交时间：2015/11/12
Thermal-assist magnetic recording head, and slider 专利
专利号: WO2011027414A1, 申请日期: 2011-03-10, 公开日期: 2011-03-10
作者:  清水 淳一郎
收藏  |  浏览/下载：8/0  |  提交时间：2019/12/31
An egg shaped failure criterion for lightweight aggregate concrete 会议论文
Haikou, China, June 18, 2011 - June 20, 2011
作者:  Wang, Wanzhen;  Chen, Yuanjiang;  Chen, Feiyi
收藏  |  浏览/下载：1/0  |  提交时间：2020/11/15
An Egg Shaped Failure Criterion for Lightweight Aggregate Concrete 会议论文
作者:  Wang, Wanzhen;  Chen, Yuanjiang;  Chen, Feiyi
收藏  |  浏览/下载：3/0  |  提交时间：2019/11/15
Inspection focus technology of space tridimensional mapping camera based on astigmatic method (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
Wang Z.; Zhang L.
收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25
The CCD plane of the space tridimensional mapping camera will be deviated from the focal plane(including the CCD plane deviated due to camera focal length changed)  under the condition of space environment and vibration  impact when satellite is launching  image resolution ratio will be descended because defocusing. For tridimensional mapping camera  principal point position and focal length variation of the camera affect positioning accuracy of ground target  conventional solution is under the condition of vacuum and focusing range  calibrate the position of CCD plane with code of photoelectric encoder  when the camera defocusing in orbit  the magnitude and direction of defocusing amount are obtained by photoelectric encoder  then the focusing mechanism driven by step motor to compensate defocusing amount of the CCD plane. For tridimensional mapping camera  under the condition of space environment and vibration  impact when satellite is launching  if the camera focal length changes  above focusing method has been meaningless. Thus  the measuring and focusing method was put forward based on astigmation  a quadrant detector was adopted to measure the astigmation caused by the deviation of the CCD plane  refer to calibrated relation between the CCD plane poison and the asrigmation  the deviation vector of the CCD plane can be obtained. This method includes all factors caused deviation of the CCD plane  experimental results show that the focusing resolution of mapping camera focusing mechanism based on astigmatic method can reach 0.25 m. 2010 Copyright SPIE - The International Society for Optical Engineering.  

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