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4条,第1-4条 帮助

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Decadal Trends in Evaporation from Global Energy and Water Balances SCI/SSCI论文  OAI收割
2012
作者:  
Zhang L.;  Zhang L.
收藏  |  浏览/下载:19/0  |  提交时间:2012/09/04
Retrospective retrieval of long-term consistent global leaf area index (1981-2011) from combined AVHRR and MODIS data SCI/SSCI论文  OAI收割
2012
Liu Y.; Liu R. G.; Chen J. M.
收藏  |  浏览/下载:16/0  |  提交时间:2014/12/24
Miniature field bus data recorder (EI CONFERENCE) 会议论文  OAI收割
2010 WASE International Conference on Information Engineering, ICIE 2010, August 14, 2010 - August 15, 2010, Beidaihe, Hebei, China
Chen C.-Q.; Ji Y.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
The common bus on bus control is RS232. With the development of field bus technology  field bus technology is widely used in data recorder. How to real time record the data of field bus in the experiment and provide the test data for process reconstruction is a very important problem. This paper introduces a kind of data acquisition and storage based on field bus. Its core design is C8051F040 microprocessor and SJA1000  a widely used field bus controller. This paper presents the basic constitution of this field bus data recorder and set forth its hardware and software. This field bus data recorder field bus real-time gathers the information and storage data on the CF card. The result of the experiment shows the system is highly reliable for data acquisition and storage  which should have abroad application prospect for data record experiment. 2010 IEEE.  
Study of high speed photography measuring instrument (EI CONFERENCE) 会议论文  OAI收割
27th International Congress on High-Speed Photography and Photonics, September 17, 2006 - September 22, 2006, Xi'an, China
Zhang Z.; Sun J.; Wu K.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
High speed photograph measuring instrument is mainly used to measure and track the exterior ballistics  which can measure the flying position of the missile in the initial phase and trajectory. A new high speed photograph measuring instrument is presented in this paper. High speed photography measuring system records the parameters of object real-time  and then acquires the flying position and trajectory data of the missile in the initial phase. The detection distance of high speed photography is more than 4.5km  and the least detection distance is 450m  under the condition of well-balanced angular velocity and angular acceleration  program pilot track error less than 5. This instrument also can measure and record the flying trail and trajectory parameters of plane  aero naval missile.