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浏览/检索结果: 共4条，第1-4条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Sleep Apnea Syndrome Sensing at C-Band 期刊论文 IEEE Journal of Translational Engineering in Health and Medicine, 2018, 卷号: 6 作者:  Yang, Xiaodong;  Fan, Dou;  Ren, Aifeng;  Zhao, Nan;  Zhang, Zhiya 收藏  |  浏览/下载：5/0  |  提交时间：2019/11/19 C-Band sensing  Concordance correlation coefficient  Correlation coefficient  Monitoring  Peak distance calculation  Sensors  Sleep apnea  Sleep detection  Synthetic aperture sonar  Wireless communication  Wireless sensor networks   Sleep Apnea Syndrome Sensing at C-Band 期刊论文 IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE-JTEHM, 2018, 卷号: 6, 页码: 8 作者:  Yang, Xiaodong;  Fan, Dou;  Ren, Aifeng;  Zhao, Nan;  Zhang, Zhiya 收藏  |  浏览/下载：25/0  |  提交时间：2019/01/08 Sleep detection  C-Band sensing  peak distance calculation  concordance correlation coefficient   Nonlinear coefficient and dispersion parameters measurement utilizing optical parametric amplification 期刊论文 2010, 2010 Wang Qing; Wang Yan; Jiang Qiao-feng; Liu Xiao-ming; Zhou Bing-kun 收藏  |  浏览/下载：6/0 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.