中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Applications of differential barometric altimeter in ground cellular communication positioning network 期刊论文  OAI收割
IET SCIENCE MEASUREMENT & TECHNOLOGY, 2020, 卷号: 14, 期号: 3, 页码: 322-331
作者:  
Hu, Zhengqun;  Zhang, Lirong;  Ji, Yuanfa
  |  收藏  |  浏览/下载:25/0  |  提交时间:2021/12/06
cellular radio  height measurement  measurement errors  Global Positioning System  altimeters  barometers  least squares approximations  Kalman filters  surface fitting  spread spectrum communication  compensation  matrix algebra  GPS  signal message structure  power spectrum  spread spectrum ranging signal  fitting parameters  least-square solution  calibration compensation  system noise variance matrix  measurement noise variance matrix  multibase station correction  height information correction calculation  DBA system  systematic performance  differential barometric altimeter  ground cellular communication positioning network  measurement datum distribution  altitude positioning error  Global Positioning System  differential barometric altimetry system  systematic implementation level  continuous altitude measurement  precise altitude measurement  DBA systematic implementation aspect  two dimensional curved surface fitting function  sensor measurement correction  filtering effect  Kalman filter  measuring station  multiBSs  navigation fusion  
Self-duality triggered dynamical transition 期刊论文  OAI收割
PHYSICAL REVIEW B, 2020, 卷号: 102, 期号: 4, 页码: 45433
作者:  
Guarneri, Italo;  Tian, Chushun;  Wang, Jiao
  |  收藏  |  浏览/下载:17/0  |  提交时间:2022/01/26
Improved continuous wavelet analysis of variation in the dominant period of hydrological time series SCI/SSCI论文  OAI收割
2013
作者:  
Wang D.
收藏  |  浏览/下载:15/0  |  提交时间:2014/12/24
Sustained Attention Deficit Along the Psychosis Proneness Continuum: A Study on the Sustained Attention to Response Task (SART) 期刊论文  OAI收割
Cognitive and Behavioral Neurology, 2009, 卷号: 22, 期号: 3, 页码: 180-185
作者:  
R. C. K. Chan;  Y. Wang;  E. F. C. Cheung;  J. F. Cui;  Y. Y. Deng
  |  收藏  |  浏览/下载:17/0  |  提交时间:2011/08/22
Temperature characteristics of high power vertical cavity surface emitting lasers (EI CONFERENCE) 会议论文  OAI收割
Semiconductor Lasers and Applications III, November 12, 2007 - November 13, 2007, Beijing, China
作者:  
Qin L.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
By using oxidation confinement technology high power vertical-cavity surface-emitting lasers are fabricated in experiment. The electrical and optical performance characteristics such as threshold current  efficiency  emission wavelength  and output power are measured under continuous wave (CW) condition at room temperature. The maximum output power is up to watt regime at wavelength of about 980nm. The temperature characteristics of the device are investigated experimentally in detail. The variation in lasing threshold current with temperature is studied. The characteristic temperature T0 of the device is derived  and the value is about 211K. Such a high characteristic temperature T0 of threshold current can lead to good temperature sensitivity of the device. At the same time  the lasing spectrum characteristics with temperature are also measured. The wavelength shift with temperature is just about 0.06nm/K. From the measured results  it is shown that the device can still operate at high temperature condition.  
Spectral analysis based range image acquiring method 会议论文  OAI收割
International Symposium on Multispectral Image Processing and Pattern Recognition, WUHAN, China, October 21-23, 1998
作者:  
Hao YM(郝颖明);  Zhu F(朱枫);  Xu XP(徐心平)
收藏  |  浏览/下载:13/0  |  提交时间:2012/06/06