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长春光学精密机械与物... [3]
物理研究所 [1]
遥感与数字地球研究所 [1]
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会议论文 [4]
期刊论文 [2]
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An improved destripe noises method for TDI-CCD images (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者:
He B.
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浏览/下载:22/0
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提交时间:2013/03/25
The new destriping method using lifting wavelet transform by means of the improved threshold function is presented in this letter. It can overcome the deficiency of the hard and soft threshold function. As compared with the known threshold functions
the quality of the denoised images using the improved threshold function is much better. The results based on several image quality indexes present that the destriped images are not only visually more plausible but also suitable for analysis. Also it is reasonable in computer time and storage space to use the lifting wavelet transform. 2011 IEEE.
Destriping of TDI-CCD remote sensing image (EI CONFERENCE)
会议论文
OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者:
He B.
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浏览/下载:29/0
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提交时间:2013/03/25
Based on the characteristic of striping noise in remote sensing images
a new destriping technique for the improved threshold function using lifting wavelet transform is presented in this letter. It can overcome the shortcoming of the hard threshold function and soft threshold function. The lifting wavelet transform is easily realized. Also it is inexpensive in computer time and storage space compared with the traditional wavelet transform. We also compare the improved threshold function with some traditional threshold functions both by visual inspection and by appropriate indexes of quality of the denoised images. Evaluations of the results based on several image quality indexes indicate that image quality has been improved after destriping. The destriped images are not only visually more plausible but also suitable for computerized analysis and it did better than the existed ones. 2010 IEEE.
时变带限信道中光通信的均衡与去噪技术
期刊论文
OAI收割
光子学报, 2008, 卷号: 37, 期号: 6, 页码: 1195, 1199
梁波
;
朱海
;
陈卫标
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浏览/下载:909/147
  |  
提交时间:2009/09/18
Convergence (mathematics)
De noising
Digital equalization
Equalization techniques
Numerical simulations
Optical (PET) (OPET)
Optical pulses
Optical signalling
Poisson noise
Semi-blind equalization
Soft-threshold
Wavelet de noising
A wavelet based targets detection method for high resolution airborne SAR data
会议论文
OAI收割
Igarss: 2007 Ieee International Geoscience and Remote Sensing Symposium, Vols 1-12: Sensing and Understanding Our Planet, New York
Tian, Sirui
;
Wang, Chao
;
Zhang, Hong
;
Zhang, Bo
;
Wu, Fan
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  |  
浏览/下载:13/0
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提交时间:2014/12/07
targets detection
RC-CFAR detector
improved wavelet soft-threshold
de-noise
Analysis of the disturbance of remote aerial detector induced by laser (EI CONFERENCE)
会议论文
OAI收割
High-Power Lasers and Applications III, November 8, 2004 - November 11, 2004, Beijing, China
作者:
Zhou J.
;
Fu Y.
;
Guo J.
;
Guo J.
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浏览/下载:42/0
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提交时间:2013/03/25
It is important to study the interaction effect between laser and photoelectric detector. In most of the laser detecting systems
laser must irradiate the photoelectric detector. The detector will be saturated or damaged easily if the fluence of the laser is higher than the saturation threshold of the detector. Now
many photoelectric detectors are used in space. To achieve their interaction
"Cat's eye" effect is applied to find and locate the remote aerial detector by laser. The possibility and mechanism of disturbance to remote aerial detector induced by laser are analyzed
and the factors of influence are also analyzed. The fluence of laser on the photoactive area of remote aerial detector is estimated. With two samples of CCD and TV tracking system
the mechanism of soft damage to CCD and TV tracking system induced by laser are introduced. The saturation of CCD and crosstalk of CCD are the main reasons of disturbance. When the tracking system is used in wave-door tracking mode
it will lose its tracking target if the saturation or crosstalk of CCD can enter into wave-door. At last
the influence to disturbance induced by atmosphere effect is also analyzed.
CORE LEVEL PHOTOIONIZATION MASS-SPECTROSCOPY OF THE FLUOROMETHYLSILANES, SI(CH3)XF4-X (X=0-4), AROUND THE SI-2P IONIZATION EDGES
期刊论文
OAI收割
CHEMICAL PHYSICS, 1991, 卷号: 158, 期号: 1, 页码: 171
BOZEK, JD
;
TAN, KH
;
BANCROFT, GM
;
FU, KJ
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浏览/下载:23/0
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提交时间:2013/09/17
ELECTRON-ION COINCIDENCE
SOFT X-RAYS
SILICON 2P THRESHOLD
K-SHELL EXCITATION
SITE-SPECIFIC FRAGMENTATION
INNER-SHELL
RELAXATION PROCESSES
SYNCHROTRON RADIATION
ANGULAR-DISTRIBUTION
RESONANT EXCITATION