中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Wide Dynamic Range, High Uniformity Spectral Irradiance Source for Calibration of Scientific-Grade, Large-Size Space Detectors 期刊论文  OAI收割
REMOTE SENSING, 2024, 卷号: 16
作者:  
Kong, Deyao;  Yuan, Yinlin;  Li, Haitao;  Zhai, Wenchao;  Zheng, Xiaobing
  |  收藏  |  浏览/下载:6/0  |  提交时间:2024/11/22
Development and Application of a Wide Dynamic Range and High Resolution Atmospheric Aerosol Water-Based Supersaturation Condensation Growth Measurement System 期刊论文  OAI收割
ATMOSPHERE, 2021, 卷号: 12
作者:  
Bian, Jiejie;  Gui, Huaqiao;  Wei, Xiuli;  Yu, Tongzhu;  Xie, Zhibo
  |  收藏  |  浏览/下载:37/0  |  提交时间:2021/06/15
A Wide Dynamic Range NUC Algorithm for IRCS Systems 期刊论文  OAI收割
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2018, 卷号: 73, 期号: 12, 页码: 1821-1826
作者:  
Li, Zhou;  Chang, Song-Tao;  He, Feng-Yun;  Cai, Li-Hua
  |  收藏  |  浏览/下载:46/0  |  提交时间:2019/05/22
Study on the performance of electromagnetic particle detectors of LHAASO-KM2A 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2017, 卷号: 845, 页码: 429-433
作者:  
LHAASO-KM2A
  |  收藏  |  浏览/下载:16/0  |  提交时间:2019/08/27
Nanoscale patterns made by using a 13.5-nm Schwarzschild objective and a laser produced plasma source (EI CONFERENCE) 会议论文  OAI收割
Optical Micro- and Nanometrology IV, April 16, 2012 - April 18, 2012, Brussels, Belgium
作者:  
Wang X.;  Wang X.;  Wang X.;  Wang Z.;  Wang Z.
收藏  |  浏览/下载:37/0  |  提交时间:2013/03/25
Lithium fluoride (LiF) crystal is a very promising candidate as nanometer resolution EUV and soft X-ray detector. Compared with other EUV and soft X-ray detectors  charge coupled device and photographic films  LiF crystal has high resolution  large field of view and wide dynamic range. In this paper  using LiF crystal as EUV detector and a Schwarzschild objective (SO) working at 13.5nm as projection optics  mesh images with 4.2 m  1.2 m and 800 nm line width and pinhole patterns with 1.5m diameter are acquired in projection imaging mode and direct writing mode  respectively. Fluorescence intensity profiles of images show that the resolution of mesh image is 900 nm  and the one of pinhole image is 800 nm. In the experiments  a spherical condense mirror based on normal incidence type is used to eliminate the damage and contamination on the masks (mesh and pinhole) caused by the laser plasma  and the energy density is not decreased compared with that the masks are close to the plasma. The development of the SO  the alignment of the objective and the imaging experiments are also reported. 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Cr image enhancement based on human visual characteristics (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer Design and Applications, ICCDA 2010, June 25, 2010 - June 27, 2010, Qinhuangdao, Hebei, China
Zhang M.-H.; Zhang Y.-Y.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
The characteristic of digital CR medicine radiation image has wide dynamic range  abundant details and bad contrast  so it is necessary to enhance CR image to the need of doctor diagnosis. But the general enhancement algorithms don't consider human visual characteristics  so it puts forward CR medicine image adaptive enhancement algorithm combining the human visual property  which is more sensitive to smooth area noise compared with detail area noise  and makes image edge detail enhancement great in detail area  and detail enhancement little in smooth area  in which factor K is based on space change of image domain  accordingly gaining non-linear enhancement edge details of CR image. Experiment results demonstrate that the algorithm enhances CR image detail and CR image enhanced has good visual effect  so the method is fit for edge detail enhancement of CR medicine radiation image. 2010 IEEE.  
Design of a scene simulator in land-based aerospace lab with the man-made light source system based on quantum theory (EI CONFERENCE) 会议论文  OAI收割
Optoelectronic Devices and Integration II, November 12, 2007 - November 15, 2007, Beijing, China
作者:  
Fang W.;  Yi W.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
The paper presents a method with the technique of combination filtering of spectrum and the technique of DSP control for the simulation and recognition of the spontaneously lightening object and stellar map in the universe. The magnitude and the spectrum of a star can be simulated in a wide dynamic range. We established the mathematical models of the Vega's visible light spectrum and luminous flux density. Tungsten-halogen lamp as a light source is used to fit the linear light of the spontaneously lightening object in the universe. Through the experiment  it shows that the more sub-channels there are while filtering spectrum in the visible spectrum  and the more degrees the variable neutral density filters and the narrow-band attenuators have  more close to the actual spectrum the simulated spectrum is. It is proved that using the PID technique is beneficial to the output of the accurate and steady radiation from the light sources. The experiment shows that the using of this method can get perfect result in fitting and simulating the spectrum  magnitude and the stellar map of the spontaneously lightening object . The analysis of the consistent result and the experimental error is also discussed in detail in this paper.