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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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FROM THE WIGNER FUNCTION TO THE s-ORDERED PHASE-SPACE DISTRIBUTION VIA A GAUSSIAN NOISE CHANNEL 期刊论文  OAI收割
THEORETICAL AND MATHEMATICAL PHYSICS, 2022, 卷号: 210, 期号: 3, 页码: 425-441
作者:  
Zhang, Yue;  Luo, Shunlong
  |  收藏  |  浏览/下载:73/0  |  提交时间:2022/04/29
Waveform Retrieval and Phase Identification for Seismic Data from the CASS Experiment 期刊论文  OAI收割
PURE AND APPLIED GEOPHYSICS, 2013, 卷号: 170, 期号: 5, 页码: 815-830
作者:  
Li, Zhiwei;  You, Qingyu;  Ni, Sidao;  Hao, Tianyao;  Wang, Hongti
  |  收藏  |  浏览/下载:26/0  |  提交时间:2018/09/26
Waveform Retrieval and Phase Identification for Seismic Data from the CASS Experiment 期刊论文  OAI收割
PURE AND APPLIED GEOPHYSICS, 2013, 卷号: 170, 期号: 5, 页码: 815-830
作者:  
Li, Zhiwei;  You, Qingyu;  Ni, Sidao;  Hao, Tianyao;  Wang, Hongti
  |  收藏  |  浏览/下载:27/0  |  提交时间:2018/09/26
Quantum corrections for boltzmann equation 期刊论文  iSwitch采集
Science in china series g-physics mechanics & astronomy, 2008, 卷号: 51, 期号: 9, 页码: 1229-1239
作者:  
Wang ZhengChuan;  Peter, M. Levy
收藏  |  浏览/下载:29/0  |  提交时间:2019/05/10
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:29/0  |  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.  
Nonnegative time-frequency distributions for parametric time-frequency representations using semi-affine transformation group 期刊论文  OAI收割
SIGNAL PROCESSING, 2005, 卷号: 85, 期号: 9, 页码: 1813-1826
作者:  
Zou, HX;  Wang, DJ;  Zhang, XD;  Li, YD
收藏  |  浏览/下载:28/0  |  提交时间:2015/11/06
Enlarging the depth of focus by filtering in the phase-space domain 期刊论文  OAI收割
appl. optics, 2005, 卷号: 44, 期号: 32, 页码: 6833, 6840
Yang QG; 刘立人; Lang HT
收藏  |  浏览/下载:2026/285  |  提交时间:2009/09/18
Statistical properties of quantum spectra in nuclei 期刊论文  OAI收割
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY, 2001, 卷号: 44, 页码: 923-931
作者:  
Wu, XZ;  Li, ZX;  Zhang, YX;  Feng, RF;  Gu, JZ
  |  收藏  |  浏览/下载:26/0  |  提交时间:2018/07/16
An approach to the study of quantum phase problem based on action-angle Wigner distribution 期刊论文  OAI收割
COMMUNICATIONS IN THEORETICAL PHYSICS, 1999, 卷号: 32, 页码: 71-76
作者:  
Jie, QL;  Wang, SJ
  |  收藏  |  浏览/下载:15/0  |  提交时间:2018/05/31
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