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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共9条,第1-9条 帮助

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Effect of the Vortex Finder and Feed Parameters on the Short-Circuit Flow and Separation Performance of a Hydrocyclone 期刊论文  OAI收割
PROCESSES, 2022, 卷号: 10, 期号: 4, 页码: 16
作者:  
Su, Tenglong;  Zhang, Yifei
  |  收藏  |  浏览/下载:34/0  |  提交时间:2022/06/15
Quantum state measurement in double quantum dots with a radio-frequency quantum point contact 期刊论文  OAI收割
CHINESE PHYSICS B, 2014, 卷号: 23, 期号: 2
Yan, L; Wang, HX; Yin, W; Wang, FW
收藏  |  浏览/下载:27/0  |  提交时间:2015/04/14
Error analysis of the micro temperature control system (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Measurement, Instrumentation and Automation, ICMIA 2012, September 15, 2012 - September 16, 2012, Guangzhou, China
Han Z.; Song K.
收藏  |  浏览/下载:48/0  |  提交时间:2013/03/25
Effect of cyclic hydrostatic pressure on the sacrificial anode cathodic protection 期刊论文  OAI收割
Anti-Corrosion Methods and Materials, 2011, 卷号: 58, 期号: 5, 页码: 238-244
S. N. Hu; T. Zhang; Y. W. Shao; G. Z. Meng; F. H. Wanga
收藏  |  浏览/下载:19/0  |  提交时间:2012/04/13
Simple electronic circuit model for diversity-induced resonance 期刊论文  OAI收割
PHYSICS LETTERS A, 2010, 卷号: 374, 期号: 24, 页码: 2446-2451
作者:  
Yao, Chenggui;  Zhan, Meng
收藏  |  浏览/下载:31/0  |  提交时间:2015/06/25
XPS Analysis of Beads Formed by Fuse Breaking of Electric Copper Wire 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 卷号: 30, 期号: 5, 页码: 1408-1412
作者:  
Wu Ying;  Meng Qingshan;  Wang Xinming;  Gao Wei;  Di Man
  |  收藏  |  浏览/下载:19/0  |  提交时间:2021/02/02
XPS Analysis of Beads Formed by Fuse Breaking of Electric Copper Wire 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 卷号: 30, 期号: 5, 页码: 1408-1412
作者:  
Wu Ying;  Meng Qingshan;  Wang Xinming;  Gao Wei;  Di Man
  |  收藏  |  浏览/下载:13/0  |  提交时间:2021/02/02
Estimation algorithm of mobile OFDM CFOs based on step-size (EI CONFERENCE) 会议论文  OAI收割
2009 International Conference on Information Engineering and Computer Science, ICIECS 2009, December 19, 2009 - December 20, 2009, Wuhan, China
Lin L.; Qiao Y.-F.; Su W.-X.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
In order to maintain orthogonality among subcarriers for mobile OFDM  a CFOs step-size estimation model is established to avoid severe performance degradation caused by ICI  and algorithmic stability  step-size parameter  the error of CFOs estimate and etc are investigated. First  after an averaging window algorithm is introduced  the mathematic model of step-size estimation algorithm is obtained through step-size parameter and time-varying CFOs. Then  based on the results of MATLAB simulation  the determination of step-size parameter  the advantages of step-size algorithm and precision are discussed. Finally  time sequence plots of added CP  interleaver and subcarrier modulation with VHDL are presented. Experimental results indicate that the maximum of CFOs errors is 0.00987 in 3 variance interval  when mobile velocity is 400 km/h  according with verdicted principle that in order for the ICI effects to be negligible  the error of CFOs estimation must be accurate within 1-2% of the subcarrier spacing  and programs can correctly implement on circuit board. 2009 IEEE.  
A high-accuracy parameter estimation algorithm for jointless Frequency-shift track circuit (EI CONFERENCE) 会议论文  OAI收割
ISECS International Colloquium on Computing, Communication, Control, and Management, CCCM 2008, August 3, 2008 - August 4, 2008, Guangzhou, China
作者:  
Zheng X.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
FSK (Frequency Shift keying) signal  which has advantages of narrow-bandwidth  strong anti-interference ability  long transmission distance and so on  is used in jointless Frequency-shift track circuit to send different kinds of control signals. However  as FSK is non-linearly modulated  parameter estimation with high accuracy is hard to realize. Based on the spectrum analysis complement with time-frequency distribution  a highaccuracy FSK signal parameter estimation algorithm is put forward in this paper. According to the signal characteristics  under-sampling and ZFFT are used to improve the accuracy of spectrum analysis  and the base frequency resolution meets system requirement of 0.02Hz. Wigner-Ville distribution has an excellent time-frequency concentration while serious cross-term interference at the same time. Through the design of kernel function  the cross-terms are almost suppressed and the upper/down side frequency resolution meets the system requirement of 0.2Hz. The effectivities of all the methods mentioned above have been proved by MATLAB simulation  which pave a solid way for the development of high-accuracy FSK signal parameter estimation devices. 2008 IEEE.