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科研机构
地理科学与资源研究所 [2]
长春光学精密机械与物... [2]
武汉大学 [1]
内容类型
SCI/SSCI论文 [2]
会议论文 [2]
期刊论文 [1]
发表日期
2013 [5]
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发表日期:2013
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Structural design of primary mirror subassembly for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Xu H.
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浏览/下载:43/0
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提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm
the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail
including material selection
diameter-thickness ratio
the number of the support points
location selection and lightweight structure
etc. A novel space mirror structure system was put forward
and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications
Switzerland.
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
Li Z.
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浏览/下载:27/0
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提交时间:2013/03/25
Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness
strength and thermal dimensional stability
some factors such as support scheme
materials selection
lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge
influences of gravity
assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively
the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz
which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications
Switzerland.
Comparison of integrating LAS/MODIS data into a land surface model for improved estimation of surface variables through data assimilation
SCI/SSCI论文
2013
Wang K.
;
Tang R. L.
;
Li Z. L.
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浏览/下载:22/0
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提交时间:2014/12/24
large-aperture scintillometer
remotely-sensed data
kalman filter
sensing data
heat-flux
temperature
system
latent
Evaluating the SEBS-estimated evaporative fraction from MODIS data for a complex underlying surface
SCI/SSCI论文
2013
作者:
Wu H.
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浏览/下载:21/0
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提交时间:2014/12/24
EF
SEBS
MODIS
complex surface
large-aperture scintillometer
balance system sebs
energy-balance
diurnal behavior
evapotranspiration estimation
self-preservation
algorithm
fluxes
heat
radiation
Large-Scene Sliding Spotlight SAR Using Multiple Channels in Azimuth
期刊论文
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2013, 卷号: 10, 期号: 5
作者:
Gao, Canguan
;
Wang, Robert
;
Deng, Yunkai
;
Feng, Jin
;
Yan, He
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浏览/下载:9/0
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提交时间:2019/12/05
Large scene
multiple azimuth channel (MAC)
sliding spotlight
synthetic aperture radar (SAR)
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