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The air attenuation of laser transmission in sand-dust weather 会议论文
Wuzhen, China, August 7, 2017 - August 10, 2017
作者:  Yu, Yao;  Huiqin, Wang;  Qiu, Hu;  Qingbin, Peng;  Minghua, Cao
收藏  |  浏览/下载：8/0  |  提交时间：2020/11/15
An Efficient Video Dehazing Algorithm Based on Spectral Clustering 会议论文
9th International Conference on Digital Image Processing (ICDIP), Hong Kong, PEOPLES R CHINA, 2017-05-19
作者:  Zhao, Fan;  Yao, Zao;  Song, XiaoFang;  Yao, Yi
收藏  |  浏览/下载：6/0  |  提交时间：2019/12/20
Study on Assessment Methods for Atmospheric Environmental Benefits of Ultra High Voltage Power Transmission Project 会议论文
International Conference on Power Engineering and Energy, Environment (PEEE), JUN 25-26, 2016
作者:  Jiang, Yuze;  An, Jiutao;  Chen, Suhong;  Xu, Naiyuan;  Wu, Guanbin
收藏  |  浏览/下载：9/0  |  提交时间：2019/12/31
Laser signal attenuation due to sand and dust particle scattering 会议论文
Shenzhen, China, November 16, 2014 - November 17, 2014
作者:  Wang, Y.G.;  Wang, H.Q.;  Cao, M.H.
收藏  |  浏览/下载：13/0  |  提交时间：2020/11/15
Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yu L.; Wang S.-R.; Lin G.-Y.
收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25
Current research on space-based exploration for the ionosphere needs more advanced technologies. Because the spectral signals in the ionosphere distributing basically in the far-ultraviolet waveband are very weak. Usual spectrometer structures and detectors such as CCD can't receive enough information. Based on this principle of atmospheric sounding  the imaging spectrometer prototype for ionosphere detection application was designed to solve the problem. This prototype consists of the telescope and the imaging spectrometer. The simple structure and small number of mirrors can help higher transmission efficiency be achieved and weak signals detection be implemented. The telescope is an off-axis parabolic mirror and the spectrometer is a modified Czerny-Turner spectral imaging system. Modified Czerny-Turner spectrometer contains a spherical mirror  a fixed plane grating and a toroidal mirror. By adjusting the incident angle to the collimating mirror and using toroidal mirror  coma and astigmatism were corrected well. We also optimize distances between the grating to the focusing mirror and the focusing mirror to the image plane to improve disadvantages of traditional Czerny-Turner structure. Designed results demonstrate that aberrations are substantially corrected  and high image quality can be obtained in broad waveband. The photon counting Wedge-Strip-Anode detector with micro-channel planes as the receiving plane is accepted for the instrument prototype. The other photon counting 2-D detector responding well for weak light such as Cross-Delay line detector and MAMA detector can also be used for detection. The calibration and performances testing system is made of a vacuum system  a deuterium lamp  a monochrometer and the instrument prototype. Results obtained from the experiment show that the spectral resolution is 2.4 nm and the spatial resolution is 80 m. The other calibration experiments are running. The technology of the spectrometer prototype is important for the research and applications of ionosphere remote sensing. 2011 SPIE.  
Dynamic data fixing for IR target radiation characteristics (EI CONFERENCE) 会议论文
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  |  浏览/下载：19/0  |  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.  
An orthogonal space-time block code with Q-PPM modulation 会议论文
作者:  Wang, Huiqin;  Jia, Kejun
收藏  |  浏览/下载：8/0  |  提交时间：2020/11/15
Analysis of laser jamming to satellite-based detector (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
Wang S.-W.; Guo L.-H.; Guo R.-H.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25
The reconnaissance satellite  communication satellite and navigation satellite used in the military applications have played more and more important role in the advanced technique wars and already become the significant support and aid system for military actions. With the development of all kinds of satellites  anti-satellite laser weapons emerge as the times require. The experiments and analyses of laser disturbing CCD (charge coupled detector) in near ground have been studied by many research groups  but their results are not suitable to the case that using laser disturbs the satellite-based detector. Because the distance between the satellite-based detector and the ground is very large  it is difficult to damage it directly. However the optical receive system of satellite detector has large optical gain  so laser disturbing satellite detector is possible. In order to determine its feasibility  the theoretical analyses and experimental study are carried out in the paper. Firstly  the influence factors of laser disturbing satellite detector are analyzed in detail  which including laser power density on the surface of the detector after long distance transmission  and laser power density threshold for disturbing etc. These factors are not only induced by the satellite orbit  but dependence on the following parameters: laser average power in the ground  laser beam quality  tracing and aiming precision and atmospheric transmission. A calculation model is developed by considering all factors which then the power density entering into the detector can be calculated. Secondly  the laser disturbing experiment is performed by using LD (laser diode) with the wavelength 808 nm disturbing CCD 5 kilometer away  which the disturbing threshold value is obtained as 3.5510-4mW/cm2 that coincides with other researcher's results. Finally  using the theoretical model  the energy density of laser on the photosensitive surface of MSTI-3 satellite detector is estimated as about 100mW/cm2  which is largely exceed the disturbing threshold and therefore verify the feasibility of using this kind of laser disturbing the satellite-based detector. According to the results. using the similar laser power density absolutely saturate the requirements to laser disturbing satellite-based detector. If considering the peak power of pulsed laser  even decrease laser average power  it is also possible to damage the detector. This result will provide the reliable evidences to evaluate the effect of laser disturbing satellite-based detector. 2009 SPIE.  
Catalytic reduction of nitrate by Pd/SnO2 catalyst using formic acid as reducing agent (EI收录) 会议论文
2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010, Chengdu, China, June 18, 2010 - June 20, 2010
作者:  Wu, Yibao[1];  Hu, Yongyou[1];  Cheng, Jianhua[1];  Guo, Yanni[1]
收藏  |  浏览/下载：1/0  |  提交时间：2019/04/16
A review of AC/DC flashover characteristics of contaminated insulators covered with artificial ice (EI收录) 会议论文
Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials, Harbin, China, July 19, 2009 - July 23, 2009
作者:  Chen, Yanping[1];  Hao, Yanpeng[1];  Zhang, Yao[1]
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/17

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