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Chinese Academy of Sciences Institutional Repositories Grid
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Study on Comprehensive Performance of Three-Dimensional Tube Applied to Gas-Solid Two-Phase Flow Environment 期刊论文  OAI收割
ENERGIES, 2021, 卷号: 14, 期号: 17, 页码: 14
作者:  
Mo, Xun;  Liu, Shi-Jie;  Li, Xiu-Zhen;  Tu, Ai-Min;  Zhu, Dong-Sheng
  |  收藏  |  浏览/下载:48/0  |  提交时间:2021/10/27
Risk Assessment of Water Resources Carrying Capacity in China 期刊论文  OAI收割
JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, 2021, 页码: 13
作者:  
Lv, Aifeng;  Han, Yan;  Zhu, Wenbin;  Zhang, Shifeng;  Zhao, Weihua
  |  收藏  |  浏览/下载:28/0  |  提交时间:2021/11/05
Risk Assessment of Water Resources Carrying Capacity in China 期刊论文  OAI收割
JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, 2021, 页码: 13
作者:  
Lv, Aifeng;  Han, Yan;  Zhu, Wenbin;  Zhang, Shifeng;  Zhao, Weihua
  |  收藏  |  浏览/下载:30/0  |  提交时间:2021/11/05
哈萨克斯坦农业水土资源承载力分析 学位论文  OAI收割
北京: 中国科学院大学, 2020
作者:  
朱薇
  |  收藏  |  浏览/下载:80/0  |  提交时间:2021/12/10
The optimal survey area of the semi-airborne TEM method 期刊论文  OAI收割
JOURNAL OF APPLIED GEOPHYSICS, 2020, 卷号: 172, 页码: 13
作者:  
Ma, Zhenjun;  Di, Qingyun;  Lei, Da;  Gao, Ya;  Zhu, Jun
  |  收藏  |  浏览/下载:82/0  |  提交时间:2020/05/18
Integrating multisource RS data and GIS techniques to assist the evaluation of resource-environment carrying capacity in karst mountainous area 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2020, 卷号: 17, 期号: 10, 页码: 2528-2547
作者:  
Pu Jun-wei;  Zhao Xiao-qing;  Miao Pei-pei;  Li Si-nan;  Tan Kun
  |  收藏  |  浏览/下载:24/0  |  提交时间:2020/12/03
水蚀风蚀交错区六道沟流域土壤肥力评价 期刊论文  OAI收割
 西南大学学报(自然科学版), 2012, 卷号: 34, 期号: 05, 页码: 68-76
王梅; 王力; 易小波; 王丽
收藏  |  浏览/下载:16/0  |  提交时间:2014/08/27
The fuzzy comprehensive evaluation of laser weapon system combat effectiveness (EI CONFERENCE) 会议论文  OAI收割
2012 3rd International Conference on Mechanical, Industrial, and Manufacturing Technologies, MIMT 2012, March 24, 2012 - March 25, 2012, Shenzhen, China
Li H.; Guo L.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
Evaluation of the operating range for ground-based infrared imaging tracking system (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  
Zhang Z.-D.
收藏  |  浏览/下载:48/0  |  提交时间:2013/03/25
Ground-based infrared imaging tracking system (GIITS) is of great importance for aerial target warning and guard. The operating range is one of the key performance specifications  on the other  which should be calculated  calculate the radiation power received on the detector in order to analysis whether the output signal meets the detection requirements or not  analyzed and studied during the whole GIITS design process. The operating range is mostly influenced by a few factors  without considering the effect of the background radiation. By improving of the traditional method  including atmospheric attenuation  a new operating range calculation model of the GIITS was established based on two requirements. One is that the image size of observed target should meet the requirement of the processor signal extraction. The number of the pixel occupied by target image should be more than 9. The other is that the signal noise ratio (SNR) of the GIITS should not be less than 5 to meet the requirements of the target detection probability and spatial frequency. The SNR calculation equation in form of energy is deduced and the radiation characteristic of the observed target and background are analyzed. When evaluate the operating range of the GIITS using the new method  the performance of GIITS and feature of target and background. This paper firstly makes analysis and summarization on the definite localizations of the traditional operating range equation of the GIITS. The localizations are mainly in two aspects. On one hand  we should successively calculate two operating range values according to two requirements mentioned above and choose the minimum value as the analytic result. In the end  the dispersion of the image and the effect of image dispersion are not considered in the traditional method  an evaluation of operating range for fighter aircraft is accomplished as an example. The influence factors in every aspect on operating range were explored by the calculated result. The new operating range calculation model provides the theoretical basis for the design and applications as well as the comprehensive evaluation of a GIITS. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Risk Evaluation of Debris Flow in the Cheng-hai Valley of Yunnan Province 会议论文  OAI收割
Shangri La, AUG 22-23, 2011
作者:  
Tingting Guo;  ShiguangXu;  Zhiquan Yang
  |  收藏  |  浏览/下载:13/0  |  提交时间:2019/03/27