中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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A Mesh Mapping-Based Cooperative Inversion Strategy for Airborne Transient Electromagnetic and Magnetic Methods 期刊论文  OAI收割
REMOTE SENSING, 2023, 卷号: 15, 期号: 1, 页码: 20
作者:  
Ren, Hao;  Lei, Da;  Wang, Zhongxing;  Fu, Changmin
  |  收藏  |  浏览/下载:28/0  |  提交时间:2023/03/30
Thermal Stability Analysis and Experimental Study of a New Type of Grid-Reinforced Carbon Fiber Mirror 期刊论文  OAI收割
APPLIED COMPOSITE MATERIALS, 2019, 卷号: 26, 期号: 2, 页码: 469-478
作者:  
Xu, Liang;  Ding, Jiaoteng;  Wang, Yongjie;  Xie, Yongjie;  Wu, Xiaoge
  |  收藏  |  浏览/下载:62/0  |  提交时间:2019/04/29
Hydrodynamic force and torque models for a particle moving near a wall at finite particle Reynolds numbers 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2017, 卷号: 92, 页码: 1-19
作者:  
Zhou ZD(周志登);  Jin GD(晋国栋);  Tian BL(田宝林);  Ren J;  Jin, GD (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
收藏  |  浏览/下载:29/0  |  提交时间:2017/09/06
Preliminary Measurement of Space Charge Neutralization Level for Proton Beam 期刊论文  OAI收割
Nuclear Physics Review, 2016, 卷号: 33, 页码: 36-40
作者:  
Zhang XZ(张雪珍);  Sun LT(孙良亭);  Yang Y(杨尧);  Wu Q(武启);  Tan B(谭彪)
  |  收藏  |  浏览/下载:42/0  |  提交时间:2017/04/17
Characteristics of Surface Deformation Detected by X-band SAR Interferometry over Sichuan-Tibet Grid Connection Project Area, China SCI/SSCI论文  OAI收割
2015
作者:  
Meng Y. S.;  Lan, H. X.;  Li, L. P.;  Wu, Y. M.;  Li, Q. W.
收藏  |  浏览/下载:34/0  |  提交时间:2015/12/09
Implementation of a fast simulation algorithm for terrain based on dynamic LOD (EI CONFERENCE) 会议论文  OAI收割
IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011, August 16, 2011 - August 18, 2011, Chengdu, China
作者:  
Wang Y.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
In-depth study and explore dynamic quad tree rendering of large-scale terrain. Investigated the problems  which was urgently to be solved  about quad tree. Studied the features and application of dynamic quad tree algorithm and static quad tree algorithm. Analyze and explore the problems about quad tree construction  data storage that is significant in modeling  removing of the grid back  and elimination of T-type fracture. In this study  an algorithm based on storage array was proposed on the basis of the previous research to eliminate T-type fracture. The results showed that the new algorithm not only enhance the streamline effect  but also increased the rendering speed in the large-scale virtual terrain rendering process. The draw rate was enhanced from 8-10 frames/s up to 20-23 frames/s. 2011 IEEE.  
Scale effect and methods for accuracy evaluation of attribute information loss in rasterization 期刊论文  OAI收割
JOURNAL OF GEOGRAPHICAL SCIENCES, 2011, 卷号: 21, 期号: 6, 页码: 1089-1100
Bai Yan(白燕); Liao, SB; Sun, JL
收藏  |  浏览/下载:28/0  |  提交时间:2012/02/21
Influence of spatial temperature distribution on high accuracy interferometric metrology (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:  
Yang H.;  Zhang J.;  Zhang J.;  Zhang J.;  Yan F.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
We calculate the influence of temperature change on the refractive index of air  establish a model of air temperature distribution and analyze the effect of different temperature distribution on the high accuracy interferometric metrology. First  a revised Edlen formula is employed to acquire the relation between temperature and refractive index of air  followed by introducing the fixed temperature gradient distribution among the spatial grid within the optical cavity between the reference flat and the test flat of the Fizeau interferometer  accompanied by a temperature change random function within each grid. Finally  all the rays through the air layer with different incident angles are traced by Matlab program in order to obtain the final output position  angle and OPD for each ray. The influence of different temperature distribution and the length of the optical cavity in on the testing accuracy can be analyzed through the RMS value that results from repeatable rays tracing. As a result  the horizontal distribution (vertical to optical axis) has a large effect on the testing accuracy. Thus  to realize the high accuracy figure metrology  the horizontal distribution of temperature must be rigorously controlled as well as to shorten the length of the optical cavity to a large extent. The results from our simulation are of great significant for the accuracy analysis of interferometric testing and the research of manufacturing a interferometer. 2010 Copyright SPIE - The International Society for Optical Engineering.