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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [3]
成都山地灾害与环境研... [2]
国家空间科学中心 [1]
寒区旱区环境与工程研... [1]
西安光学精密机械研究... [1]
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OAI收割 [7]
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会议论文 [4]
期刊论文 [4]
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2020 [2]
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2015 [1]
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The effect of topography on landslide kinematics: a case study of the Jichang town landslide in Guizhou, China
期刊论文
OAI收割
LANDSLIDES, 2020, 卷号: 17, 期号: 4, 页码: 959-973
作者:
Guo Jian
;
Yi Shujian
;
Yin Yanzhou
;
Cui Yifei
;
Qin Mingyue
  |  
收藏
  |  
浏览/下载:39/0
  |  
提交时间:2020/05/18
Terrestrial Water Resources Satellite
Soil moisture
Airborne experiment
L-band active and passive
Luan River
Soil moisture as a key factor in carbon release from thawing permafrost in a boreal forest
期刊论文
OAI收割
GEODERMA, 2020, 卷号: 357, 页码: 113975
作者:
Song Xiaoyan
;
Wang Genxu
;
Ran Fei
;
Huang Kewei
;
Sun Juying
  |  
收藏
  |  
浏览/下载:163/0
  |  
提交时间:2019/12/06
Methane
Carbon dioxide
Organic carbon
Active layer
Incubation experiment
The effect of temperature distribution on reflectors in satellite optical terminals
会议论文
OAI收割
Nanjing, PEOPLES R CHINA, 2017-10-24
作者:
Wang Chenjie
;
Shangguan Aihong
;
Chai Wenyi
;
Hu Yongming
;
Tao, Wenquan
  |  
收藏
  |  
浏览/下载:38/0
  |  
提交时间:2018/07/05
Reflectors
Temperature Distribution
Shape Accuracy
Thermal-optical Vacuum Experiment
Active Thermal Control
Experimental Warming Aggravates Degradation-Induced Topsoil Drought in Alpine Meadows of the Qinghai-Tibetan Plateau
期刊论文
iSwitch采集
LAND DEGRADATION & DEVELOPMENT, 2017, 卷号: 28, 期号: 8, 页码: 2343-2353
作者:
Xue, Xian
;
You, Quangang
;
Peng, Fei
;
Dong, Siyang
;
Duan, Hanchen
收藏
  |  
浏览/下载:50/0
  |  
提交时间:2019/10/09
active layer
degradation
heat and water flux
manipulative experiment
soil texture
Determining wind field and electric field by a barium release experiment in the ionosphere
期刊论文
OAI收割
SCIENCE CHINA-EARTH SCIENCES, 2015, 卷号: 58, 期号: 7, 页码: 1210-1215
作者:
Xie LiangHai
;
Li Lei
;
Wang JingDong
;
Tao Ran
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2015/09/28
active experiment
barium release
ionospheric electric field
wind field
A study on atmospheric turbulence effects in full-optical free-space communication systems (EI CONFERENCE)
会议论文
OAI收割
2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China
作者:
Liu P.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
Next generation free-space optical communication systems have used fiber-optic technology as the seamless connection between free-space and optical fiber. The full-optical free-space optical communication systems use optical fiber as the receiver to get faster communication speed. The atmospheric turbulence deeply influenced on the optical wave propagated in terrestrial application. As the active receiving area of the full-optical free-space optical communication systems is very small
it is important to research on the atmospheric turbulence effects on the full-optical free-space optical communication system. In this paper
we discuss about both the turbulence-induced intensity fluctuations and the angle-of-arrival effects in full-optical free-space optical communication systems which are used in a few kilometers communication. We gave the numerical results of the atmosphere turbulence effects on the free-space optical communication systems. In order to minimize the atmospheric turbulence influence on the full-optical free-space optical communications system
we also investigate the use of fine tracking system in the communication system. We have set up a full-optical free-space communication system in Tokyo and received useful data from the experiment. We compared the receiving power of the experiment
when the fine tracking system is On and Off. From the experiment results
we can see that the fine tracking system effectively mitigates the atmospheric turbulence and increases the receiving power of the communication system. 2010 IEEE.
High power vertical cavity surface-emitting laser with high reliability (EI CONFERENCE)
会议论文
OAI收割
Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China
Changling Y.
;
Guoguang L.
;
Chunfeng H.
;
Li Q.
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
High-power vertical-cavity surface-emitting lasers with InGaAs/GaAs quantum well active gain region are investigated. By using AlAs oxidation technology
the devices have been fabricated in experiment
and the characteristics of the device are carried out at room temperature. The 300m-diameter VCSELs have the maximum room temperature continuous wave (CW) optical output power of about 1.1W
and the threshold current of the device is about 0.46A. The life test of the device is carried out in constant current mode. The life test of 300-m diameter lasers shows that the average lifetime is about 1800h at 80C. The device degradation mechanism is also discussed in detail.
Support technique of ultra thin mirror in space optics (EI CONFERENCE)
会议论文
OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 2, 2005 - November 5, 2005, Xian, China
作者:
Ren J.-Y.
;
Gao M.-H.
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
With the development of space optical system
the technique of ultra thin mirror come forth and is paid more attention because of less difficulty in machining
low cost
lightweight
no disassembly during detecting and maintaining. The key technique takes advantage of deformation of ultra thin mirror as the influence of environment to adjust the surface figure. Its accuracy meets requirement. An analysis method is based on finite element analysis (FEA)
and many items
including the amount of support points
the way of arrangement
the optimum design of support component are studied. The finite element method was used to analyze the mirror and some different mirror support schemes. The principal aim of the mirror analysis is to get numbers of support points and the ways of the support. There are three schemes including 12-6-1
12-8-1 and 16-8-1 models. Deformation of deadweight is calculated under the three conditions. The way of 16-8-1 is more suitable than the designs of other two. The support subassembly is amended to meet with the mirror surface RMS in the range of 30m. Deformation of the mirror with support structure has been calculated. The result is 16.52nm
lower than a quarter of the wavelength
which indicates the feasibility of the support scheme applied to mirror. Theoretical result for the best way of support is presented. The result of analysis shows that requirement surface figure could be met through adjusting support points. It predicts feasibility of the support technique and provides theoretical value for active adjustment in the laboratory. At present
support and adjusting experiment of ultra thin mirror is being carried on.