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• OAI收割 [19]

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浏览/检索结果: 共19条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Noise suppression by differential detection of simultaneous electromagnetically induced transparency and absorption in counterpropagating bichromatic light 期刊论文  OAI收割 New Journal of Physics, 2023, 卷号: 25, 期号: 10 作者:  Li,Qinglin;  Yun,Peter;  Yang,Tenghui;  Hao,Qiang;  Zhang,Shougang   |  收藏  |  浏览/下载：193/0  |  提交时间：2023/12/13 noise suppression  differential detection  electromagnetically induced transparency and absorption  coherent population trapping   PMD tolerant transmission using multiple optical phase conjugators in the discretely amplified systems 期刊论文  OAI收割 Journal of Optical Communications, 2023 作者:  Tong, Xiaogang;  Cao, Weiwei;  Zhang, Junsheng;  Liang, Haijian   |  收藏  |  浏览/下载：12/0  |  提交时间：2023/11/02 optical fiber communications  coherent detection  optical phase conjugation  digital back-propagation  polarization mode dispersion   Filtered Convolution for Synthetic Aperture Radar Images Ship Detection 期刊论文  OAI收割 REMOTE SENSING, 2022, 卷号: 14, 期号: 20, 页码: 19 作者:  Zhang, Luyang;  Wang, Haitao;  Wang, Lingfeng;  Pan, Chunhong;  Huo, Chunlei   |  收藏  |  浏览/下载：44/0  |  提交时间：2022/11/21 synthetic aperture radar (SAR)  remote sensing image ship detection  filter convolution  coherent speckle noise  local weight   激光相干测风技术应用研究 期刊论文  OAI收割 大气与环境光学学报, 2020, 卷号: 15 作者:  金效梅;  朱文越;  刘庆   |  收藏  |  浏览/下载：26/0  |  提交时间：2020/11/23 atmospheric wind field  atmospheric turbulence  coherent detection  lidar  aerosol  大气风场  大气湍流  相干探测  激光雷达  气溶胶   No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文  OAI收割 Nature, 2020, 卷号: 587, 页码: 63-65 作者:  HXMT   |  收藏  |  浏览/下载：44/0  |  提交时间：2022/02/08 Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.   Two Birds With One Stone: A Coupled Poisson Deconvolution for Detecting and Describing Topics From Multimodal Web Data 期刊论文  OAI收割 IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, 2019, 卷号: 30, 期号: 8, 页码: 2397-2409 作者:  Pang, Junbiao;  Tao, Fei;  Huang, Qingming;  Tian, Qi;  Yin, Baocai   |  收藏  |  浏览/下载：66/0  |  提交时间：2019/12/10 Multimodal description  Poisson deconvolution (PD)  topic coherent  topic description  topic detection on Web   Non-Data-Aided Cycle Slip Self-Correcting Carrier Phase Estimation for QPSK Modulation Format of Coherent Wireless Optical Communication System 期刊论文  OAI收割 Ieee Access, 2019, 卷号: 7, 页码: 110451-110462 作者:  Y.Wang;  Z.Y.Wu;  X.L.Li;  T.W.Geng;  S.Ma   |  收藏  |  浏览/下载：50/0  |  提交时间：2020/08/24 Coherent detection,cycle slip,free-space optical communication,phase,estimation,performance,algorithms,capacity,Computer Science,Engineering,Telecommunications   Design and engineering development of single-mode fiber coupling system for Laser Doppler Velocity Radar 会议论文  OAI收割 作者:  Wu KY;  Ping HZ;  Ming XW;  Rong S   |  收藏  |  浏览/下载：28/0  |  提交时间：2018/11/20 Single-mode fiber coupling  Coherent detection  Laser Doppler velocity radar  Optical design   Adaptive optics for the free-space coherent optical communications 期刊论文  OAI收割 OPTICS COMMUNICATIONS, 2016, 卷号: 361, 页码: 21-24 作者:  Liu, Chao;  Chen, Mo;  Chen, Shanqiu;  Xian, Hao 收藏  |  浏览/下载：25/0  |  提交时间：2016/06/27 Adaptive optics  Free-space optical communication  Coherent detection   The effect of magnocellular-based visual-motor intervention on Chinese children with developmental dyslexia 期刊论文  OAI收割 FRONTIERS IN PSYCHOLOGY, 2015, 卷号: 6, 期号: 0, 页码: 1529 作者:  Qian, Yi;  Bi, Hong-Yan 收藏  |  浏览/下载：21/0  |  提交时间：2015/12/22 developmental dyslexia  magnocellular pathway  coherent motion detection  visual-motor intervention  Chinese reading