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	Three Gorges Dam: friend or foe of riverine greenhouse gases? 期刊论文 OAI收割 NATIONAL SCIENCE REVIEW, 2022, 页码: 9 作者: Ni, Jinren; Wang, Haizhen; Ma, Tao; Huang, Rong; Ciais, Philippe \| 收藏 \| 浏览/下载：39/0 \| 提交时间：2022/08/22 Three Gorges Dam greenhouse gas spatiotemporal variation equilibrium Yangtze River whole system analysis
	Application of interferometry measurement in large-scale optic-electrical theodolite (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. 收藏 \| 浏览/下载：44/0 \| 提交时间：2013/03/25 Interferometry is a very important method in high accuracy measurement for optical system. This article briefly introduced the conception of interferometry and took a product of 4D Technology as an example to carry on the measurement. A large-scale optic-electrical Theodolite in assemblage was measured and its primary mirror was 400mm in diameter. With the analysis of the results some micro adjustments of the mechanical structure proceed and it made the system perform better. The final results of the whole system is 1.061 in P-V value and 0.1136 in RMS value (=632.8nm) this meets the demand of optical design and practical application. The result demonstrates that interferometry is a good way to be utilized and optimize in the procedure of assemble. (2013) Trans Tech Publications Switzerland.
	The structure design and analysis of predigest laser combine bind and extend bind flat roof (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011, July 29, 2011 - July 31, 2011, Sanya, China 作者: Wang B.; Wang H.; Wang H.; Wang H.; Wang H. 收藏 \| 浏览/下载：35/0 \| 提交时间：2013/03/25 This paper put forward a kind of predigest laser combine bind and extend bind flat roof structure which is founded as fission flat roof and can be built in an little room 1280mm990mm815mm. This flat roof space location can be adjusted. This kind of seat can ensure the system complete laser combine and close as high precision. In this paper we designed the laser combine and close whole structure and install design. At last we did some finite statics analysis to some important parts. This design can ensure every laser fire directional adjust mete lower 30' and the flat roof quality is 770kg. The transition benchmark flat roof system most meet and emergency is 0.005mm at the premise of bear the weight of turn flat laden. It can be seen that this structure can satisfy the request of many lasers small space laser extend bind and adjust. This kind can be extended to other light combine bind and extend bind structure design. (2011) Trans Tech Publications Switzerland.
	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：49/0 \| 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).
	Application of spatial data mining in accident analysis system 会议论文 OAI收割 2008 International Workshop on Education Technology and Training, Shanghai, China, 2009 Jinlin; Wang1; 2; Xi; Chen1; Kefa; Zhou1; Wei; Dan; Zhang3 收藏 \| 浏览/下载：25/0 \| 提交时间：2011/08/23 Geographic information systems - Geology - Highway accidents - Remote sensing - Technical presentations - Accident analysis system - Accident data - Analysis system - ArcGIS engine - GIS application - Spatial data mining - Three-layer - Threelayer architecture - Traffic accidents - Traffic management - Whole process