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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
国家空间科学中心 [1]
长春光学精密机械与物... [1]
国家天文台 [1]
中国科学院大学 [1]
南京天文光学技术研究... [1]
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OAI收割 [4]
iSwitch采集 [1]
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期刊论文 [4]
会议论文 [1]
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2020 [1]
2019 [1]
2013 [1]
2012 [1]
2010 [1]
学科主题
天文技术与方法 [1]
微波遥感 [1]
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激光频率梳同步定标的千万分辨率VIPA光谱装置设计及应用(特邀)
期刊论文
OAI收割
光子学报, 2020, 卷号: 49, 期号: 11
作者:
朱小明
;
何晋平
  |  
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2021/12/06
Ultra-high resolution spectroscopy
Virtually imaged phased-array
Laser frequency combs
Brillouin scattering
Doppler shift
Many-wavelength interferometry
超高分辨率光谱技术
虚拟成像相位阵列
激光频率梳
布里渊散射
多普勒频移
极多波长干涉测距
Numerical study of comb-based high-accuracy distance measurement utilizing VIPA interferometry
期刊论文
OAI收割
Journal of Optics, 2019, 卷号: 21, 期号: 2, 页码: 105645.R1-1-9
作者:
Zhu XM(朱小明)
;
He JP(何晋平)
  |  
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2020/02/03
Ultra-high resolution spectroscopy
Ultra-high precision distance measurement
Laser frequency comb
Virtually imaged phase array interferometry
Terahertz FSS for space borne passive remote sensing application
期刊论文
OAI收割
ELECTRONICS LETTERS, 2013, 卷号: 49, 期号: 22, 页码: 1398-1399
作者:
Xia, Bu Gang
;
Zhang, De Hai
;
Meng, Jin
;
Huang, Jian
;
Yao, Chang Fei
收藏
  |  
浏览/下载:63/0
  |  
提交时间:2014/05/04
aerospace instrumentation
antenna arrays
circular waveguides
electromagnetic wave polarisation
frequency selective surfaces
geophysical equipment
radiometers
receiving antennas
remote sensing
resonators
spatial filters
submillimetre wave devices
terahertz wave devices
terahertz metamaterials
frequency 0
1 THz to 0
5 THz
Earth observation radiometers
space-borne passive remote sensing application
scanning antenna
split ring resonator
subwavelength circular ring
micromachined metallic pattern
periodic aperture unit cells
ultra-thin high conductivity aluminium layer
quartz wafer
FSS array
incident angle variation
polarisation variation
high sensitivity receiver
spatial filtering front-end
terahertz FSS metamaterial
terahertz frequency selective surface
Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE)
会议论文
OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者:
Zhang L.
;
Zhang L.
收藏
  |  
浏览/下载:74/0
  |  
提交时间:2013/03/25
The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope
the structure should have high stiffness and high reliability and light weight. Compared with invar
aluminum alloy and titanium alloy
carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper
optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm
total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages
such as ultra-light weight
high stiffness and dimensional stability
etc. The optimization method and the baffle design can be helpful to other coaxial telescopes
such as Cassegrain
Gregorian and their subdivisions. 2012 IEEE.
A 300 hz two-stage pulse tube cryocooler that attains 58 k
期刊论文
iSwitch采集
Cryogenics, 2010, 卷号: 50, 期号: 8, 页码: 469-471
作者:
Cai, Huikun
;
Yang, Luwei
;
Luo, Ercang
;
Zhou, Yuan
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2019/05/10
Ultra-high frequency
Pulse tube cooler
Thermoacoustics