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CAS IR Grid
机构
长春光学精密机械与物... [5]
地质与地球物理研究所 [2]
青海盐湖研究所 [1]
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OAI收割 [8]
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会议论文 [5]
期刊论文 [3]
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2018 [1]
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Polyethylene glycol-enwrapped silicon carbide nanowires network/expanded vermiculite composite phase change materials: Form stabilization, thermal energy storage behavior and thermal conductivity enhancement
期刊论文
OAI收割
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2018, 卷号: 174, 页码: 283-291
作者:
Deng, Yong
;
Li, Jinhong
;
Nian, Hongen
  |  
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2018/06/20
Expanded Vermiculite
Silicon Carbide Nanowire Filler
Theoretical Calculation Method
Thermal Conductivity Enhancement
Thermal Energy Storage Behavior
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:48/0
  |  
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).
The removal function of edge effect and amending with dwell time function (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China
作者:
Luo X.
;
Zhang F.
;
Zhang F.
;
Wang X.-K.
;
Zheng L.-G.
收藏
  |  
浏览/下载:34/0
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提交时间:2013/03/25
Computer Controlled Optical Surfacing (CCOS) is widely used for making optical aspheric mirrors. In the practical fabrication
edge effect is an important problem which restricts the fabrication efficiency and accuracy seriously. In this paper
the edge effect is solved by working out the edge removal function and compensate with dwell time function. Skin Model is used to describe the pressure distribution when the tool hangs over the work-piece. The calculation model of edge removal function is derived from Skin Model theoretically. A removal function experiment is completed. The difference between the theoretical model and the experiment results is less than 5%. It means that the calculation model is suit for the practical fabrication. Than the dwell time is solved with edge effect compensation by matrix-based algorithm. In the end
actual experiment was done to validate the edge effect compensation method. 2010 Copyright SPIE - The International Society for Optical Engineering.
Dynamic data fixing for IR target radiation characteristics (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Lihua C.
;
Juan C.
收藏
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浏览/下载:28/0
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提交时间:2013/03/25
The main methods to measure the target IR features are the following two ways: test and then measurement
or theoretical and simulation calculation. The former is direct measurement so the results are more accurate but the test is costly and complicated
so that it is limited in the application. Theoretical and simulation calculation are widely used in the target IR radiation calibration. Here we give the basic configuration of the calibration platform for measuring the IR radiation of the large area low temperature blackbody source
and discuss the calibration flowchart and key technologies for atmospheric transmission correction. The dynamic data are analyzed in real time to determine the IR radiation features in the data fusion subsystem
and the experimental results show that the calibration method is feasible and practical. 2010 IEEE.
Three-dimensional angle measurement based on auto-collimation and moire fringe (EI CONFERENCE)
会议论文
OAI收割
2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, November 16, 2008 - November 19, 2008, Beijing, China
Cai S.
;
Liang S.
;
Qiao Y.-F.
收藏
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浏览/下载:28/0
  |  
提交时间:2013/03/25
A method for small three-dimensional (3D) angle measurement based on auto-collimation and moire fringe is proposed and analyzed. A right-angle prism is used as the indicator of angle change. The inclined plane indicates the pitch and yaw angles and roll angle in indicated by the rib which is the intersection of two right-angle sides. Pitch and yaw angles measurement are implemented by auto-collimation based on reticule and roll angle measurement is measured based on moire fringe. Roll angle measurement is separated from pitch and yaw by using two light sources with different frequencies. Any small change of pitch and roll angles will induce the shift of the reticule image after reflecting by inclined plane. And any small roll angle will induce a change in moire fringe width that is generated by scale grating image which is reflected by the prism and index grating. The math model of this method is built up and error analysis is presented. The theoretical calculation results show that the proposed method is feasible and can achieve high accuracy. 2009 SPIE.
Improved increment method to calculate sulfur isotope fractionation factors in sulfides
期刊论文
OAI收割
ACTA PETROLOGICA SINICA, 2006, 卷号: 22, 期号: 2, 页码: 449-456
作者:
Li, YB
;
Liu, JM
;
Hu, YF
;
Ye, J
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收藏
  |  
浏览/下载:16/0
  |  
提交时间:2018/09/26
Sulfides
Sulfur Isotope Fractionation
Increment Method
Theoretical Calculation
Improved increment method to calculate sulfur isotope fractionation factors in sulfides
期刊论文
OAI收割
ACTA PETROLOGICA SINICA, 2006, 卷号: 22, 期号: 2, 页码: 449-456
作者:
Li, YB
;
Liu, JM
;
Hu, YF
;
Ye, J
  |  
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2018/09/26
Sulfides
Sulfur Isotope Fractionation
Increment Method
Theoretical Calculation
The three-dimensional focusing behaviors of the compound x-ray lenses (EI CONFERENCE)
会议论文
OAI收割
Optical Design and Testing II, November 8, 2004 - November 11, 2004, Beijing, United states
Le Z.
;
Liu K.
;
Liang J.
;
Zhang M.
;
Quan B.
收藏
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浏览/下载:17/0
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提交时间:2013/03/25
A theoretical method for evaluating the three-dimensional focusing performances of the compound x-rays lenses is presented in the present paper. The relationship between the transverse and axial focusing behaviors is considered and a simple calculation that predicts the transverse and axial focusing behaviors of the compound x-ray lenses is also presented. As an example
the three-dimensional focusing performance of a compound x-ray lens with Al material is predicted. The dependences of the three-dimensional focusing performances on the compound lenses' structural parameters are observed for the Al compound x-ray lens. Moreover
the approximate tolerances in the setting of the receiving planes are also considered for x-rays of 4.95keV
14.99keV and 29.78keV.