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长春光学精密机械与物... [4]
力学研究所 [1]
金属研究所 [1]
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OAI收割 [6]
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会议论文 [5]
期刊论文 [1]
发表日期
2012 [2]
2010 [4]
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Characterization of Different Surface States and Its Effects on the Oxidation Behaviours of Alloy 690TT
期刊论文
OAI收割
Journal of Materials Science & Technology, 2012, 卷号: 28, 期号: 4, 页码: 353-361
Z. M. Zhang
;
J. Q. Wang
;
E. H. Han
;
W. Ke
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浏览/下载:107/0
  |  
提交时间:2013/02/05
Alloy 690TT
Surface states
Cold-worked layer
Microstrain
Grain
refinement
stress-corrosion cracking
high-temperature water
environmentally
assisted cracking
steam
initiation
steels
strain
Investigation of traveling wave in vortex-induced vibrations of long flexible cylinders
会议论文
OAI收割
23rd International Congress of Theoretical and Applied Mechanics, 中国北京/Beijing, China, 2012-08-19
作者:
Wu XD(武晓东)
;
Ge F(葛斐)
;
Hong YS(洪友士)
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浏览/下载:33/0
  |  
提交时间:2014/04/02
flexible
cylinders
0traveling
vortex
induced
fitting
standing
vibration
ident
overall
transform
distribution
individual
method
values
ratio
Hilbert
based
worked
engineering
Research on the the device of non-angular vibration for opto-electronic platform (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China
An Y.
;
Song C.-P.
;
Kuang R.-J.
;
Jin G.
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浏览/下载:42/0
  |  
提交时间:2013/03/25
The opto-electronic platform is the main equipment for aviation reconnaissance. It is a surveillance system with the function of search
recognition orientation and tracking by opto- electronic instruments. It is made up of opto-electronic instruments which are used to get high quality image
and stabilization tracking system to control stabilization and gesture of platform for exact tracking. The opto-electronic platform purpose is to achieve high quality image. Besides the impact of optic system
the image quality of the system is influenced greatly in the vibration environment. The research worked by Zhao peng which demonstrated the affection caused by angular vibration was worse than which caused by line vibration
and what was multiplied direct ratio with plane altitude. So it is necessary to design a new device which could be used widely and has good angular vibration isolation effect. According to the theory of parallelogram
the non-angular vibration device had been designed with spatial links
and the theory of non-angular vibration was analyzed. The three-dimensional model was set with UG
the analysis was done by ADAMS/vibration software. The acceleration and displacement response of the device in each direction was calculated by inspiriting it with sine wave of the acceleration in three directions
and the stiffness and damp were studied. All the work prove the design principle of the device is reasonable
and the device is adopted to keep the platform motion moving horizontally
at the meantime the device is good at isolating vibration in all directions. 2010 SPIE.
Remote sensing image restoration using estimated point spread function (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Information, Networking and Automation, ICINA 2010, October 17, 2010 - October 19, 2010, Kunming, China
作者:
Yang L.
;
Yang L.
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浏览/下载:42/0
  |  
提交时间:2013/03/25
In order to reduce image blur caused by the degradation phenomenon in the imaging process
the acquired images of the space remote sensing camera are restored. First
the frequency-domain notch filter is adopted to remove strip noises in the images. Then degradation function
which is referred to as the point spread function (PSF) of the imaging system is estimated using the knife-edge method. To improve the accuracy of the estimation
the estimated PSF is adjusted with Gaussian fitting. Finally
the images are restored by Wiener filtering with the fitted PSF. The restoration results of the remote sensing images show that almost all strip noises are eliminated by the notch filter. After denoising and restoration
the variance of the remote sensing image worked with in this paper increases 30.979 and the gray mean gradient increases 3.312. Due to Gaussian fitting
the accuracy of the PSF estimation is heightened. Image restoration with the final PSF is benefit to interpreting and analyzing the remote sensing images. After restoration
the contrasts of the restored images are increased and the visual effects become clearer. 2010 IEEE.
Research on automatic multispectral images synthesis of space camera (EI CONFERENCE)
会议论文
OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者:
Liu J.-G.
;
Wu X.-X.
;
Kong D.-Z.
;
Zhou H.-D.
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浏览/下载:28/0
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提交时间:2013/03/25
Multilinear CCD Sensor was often used on space cameras to obtain multispectral images with each line representing different band channels. However images of different band channels obtained at the same time didn't coincide as there were spaces between lines. Pixel numbers to be adjusted between images of different channels varied when the space camera worked by swaying forward and backward or adjusted row transfer period to compensate image movement. An automatic multispectral images synthesis algorithm of space camera was put forward on the basis of analysis of such phenomenon. In this algorithm a new evaluation function was used to determine pixel numbers to be adjusted and the image regions of each band channel to be clipped. In this way images of different band channels could be synthesized automatically to obtain an accurate colorful image. This algorithm can be used to dispose a large mount of images from space camera directly without any manual disposal so that efficiency could be improved remarkably. In validation experiments the automatic multispectral images synthesis algorithm was applied in synthesis of images obtained from outside scene experiment of a multispectral space camera. Result of validation experiments proved that the automatic multispectral images synthesis algorithm can realize accurate multispectral images synthesis of space camera and the efficiency can be improved markedly. 2010 SPIE.
Bootstrap loader design of aerospace payload controller based on TSC695F (EI CONFERENCE)
会议论文
OAI收割
2010 2nd International Conference on Computational Intelligence and Natural Computing, CINC 2010, September 13, 2010 - September 14, 2010, Wuhan, China
Xu W.
;
Piao Y.
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浏览/下载:41/0
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提交时间:2013/03/25
Anti-radiation TSC695F is usually used as aerospace payload controller in tasks to ensure the aerospace payload having extremely high reliability in abominable space environment. The processor bases on SP ARC V7 architecture with parity check and EDAC
so it could design out high reliable bootstrap loader to guarantee the operation system of VxWorks and application codes loaded correctly and worked stable and high effective. First
this paper put forward the system hardware composition and boot mode which apply for aerospace payload
then it makes clear the related contents of register group initialization
stack initialization
system hardware initialization in bootstrap loader of TSC695F and give out the method to establish TRAP table. That's all through comparing different type of organize mode of program image. After that
compiling of target codes have been described and the kernel code of MakeFile had been given at the same time for reference aimed at the realization of engineering. Although this paper is based on TSC695F
but it could be extended to other embedded system based on SP ARC for bootstrap loader analysis and design
for example
the TSC697 which based on SP ARC V8 with higher performance
so this paper has extremely high engineering value. 2010 IEEE.