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清华大学 [6]
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期刊论文 [14]
会议论文 [8]
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Fast acoustic source imaging using multi-frequency sparse data
期刊论文
Inverse Problems, 2020, 卷号: 36, 期号: 2
作者:
Alzaalig,Ala
;
Hu,Guanghui
;
Liu,Xiaodong
;
Sun,Jiguang
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2020/03/10
acoustic source imaging
multi-frequency data
sampling method
uniqueness
Joint SCMA and waveform optimisation for WPDM-based logging cable telemetry systems under sampling clock offset
期刊论文
IET COMMUNICATIONS, 2019, 卷号: 13, 页码: 345-353
-
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2020/01/03
quadrature amplitude modulation
OFDM modulation
genetic algorithms
error statistics
wavelength division multiplexing
telecommunication cables
radiotelemetry
code division multiple access
joint SCMA
waveform optimisation
sparse code multiple access
WPDM-based system model
associated optimal waveform design
SCO
OFDM
SCMA-based mapping method
bit error rate performance
sampling clock offset
wavelet packet division multiplexing
LCTS
orthogonal frequency division multiple
Infrared modulated thermography based on complex Morlet wavelet phase [基于复Morlet小波相位的红外调制热像检测方法]
期刊论文
Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering, 2018, 卷号: 47
作者:
Zhao, S.
;
Guo, X.
;
Liu, Y.
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2019/12/30
Defects
Fiber reinforced plastics
Frequency modulation
Glass fiber reinforced plastics
Glass fibers
Image processing
Nondestructive examination
Reinforced plastics
Reinforcement
Signal to noise ratio
Wavelet transforms
Complex Morlet Wavelet
Detection capability
Fourier transform method
High-frequency noise
Infrared image sequence
Modulation frequencies
Non destructive testing
Sampling frequencies
Thermography (imaging)
A flow stability evaluation method based on flow-pressure correlation
期刊论文
FLOW MEASUREMENT AND INSTRUMENTATION, 2018, 卷号: 64, 页码: 155-163
作者:
Meng, Tao
;
Fan, Shangchun
;
Wang, Chi
;
Shi, Huichao
;
Li, Xiaopeng
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2019/12/30
Flow measurement
Flowmeters
Correlation coefficient
Flow fluctuations
Flow stability
Fluctuation amplitudes
Measuring method
Relationship analysis
Sampling frequencies
Wide frequency range
Flow rate
Two effective post-filtering strategies for improving direct sampling methods
期刊论文
APPLICABLE ANALYSIS, 2017, 卷号: 96, 期号: 3, 页码: 502-515
作者:
Liu, Keji
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  |  
浏览/下载:3/0
  |  
提交时间:2019/08/22
Direct sampling method
post-filtering strategies
multi-frequency waves
The Optimal Design Method of FIR Filter Using the Improved Genetic Algorithm
会议论文
作者:
Zhao, An-Xin
;
Tang, Xiao-Jun
;
Zhang, Zhong-Hua
;
Liu, Jun-Hua
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2019/12/02
Look-up table
Finite Impulse Response filter
component
Frequency sampling method
Genetic Algorithm
Study on time registration method for photoelectric theodolite data fusion (EI CONFERENCE)
会议论文
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
Yang H.-T.
;
Gao H.-B.
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  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
In range measurement
theodolite and radar constitute a real-time tracking system at different sites to track the same target in the air and get useful information exactly and timely. As the optical theodolite and radar have different sampling frequency and measurement system
the data is sent to the fusion center is asynchronous. This paper proposed a time registration method based on multi-sensor data using Wavelet neural network algorithm
which not only better solved the basic problems of theodolite fusion tracking but also improve the efficiency of data fusion. Simulation experiment and comparison with other time registration method have shown the advantage of this method. 2012 IEEE.
Comparison and simulation of subpixel imaging modes for linear CCD (EI CONFERENCE)
会议论文
2012 3rd International Conference on Information Technology for Manufacturing Systems, ITMS 2012, September 8, 2012 - September 9, 2012, Qingdao, China
Li Y.
;
He B.
;
Liu T.
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浏览/下载:30/0
  |  
提交时间:2013/03/25
Subpixel technique of linear CCD is effective to enhance the spatial resolution without increasing the focal length of optics and reducing the pixel size. To compare image quality of two main subpixel imaging modes
quincunx sampling and four-point sampling
a method to quantitatively evaluate image quality of subpixel based on MTF was proposed. The MTF of quincunx and four-point sampling modes were derived. Analytical results shows that theoretical limiting resolution of quincunx sampling and four-point sampling is improved to 1.4 and 1.86 times respectively
and MTF values at Nyquist frequency of two modes are increased by 0.1106 and 0.1679
respectively. MTFA in (0
0.5) of two subpixel imaging modes were calculated and results illustrates that four-point sampling offers much more improvement with image quality than quincunx sampling
at the cost of double amount of data. A model for simulating subpixel imaging using Matlab was established
and simulation results of spoke target verify the theoretical analysis. (2012) Trans Tech Publications
Switzerland.
Vibration testing parameters measured by sampling moiré method
期刊论文
Applied Mechanics and Materials, 2012, 卷号: 226-228, 页码: 1975-1980
作者:
Lei, Z.
;
Wang, Z.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2019/12/13
Vibration waveform
Frequency
Amplitude
Sampling moire method
Bandwidth allocation strategy of networked control system based on multirate sampling method
期刊论文
International Journal of Digital Content Technology and its Applications, 2012, 卷号: 6, 期号: 23, 页码: 651-659
作者:
Wang, Zhiwen
;
Sun, Hongtao
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2020/11/14
Data communication equipment
Frequency allocation
Networked control systems
Scheduling
Available bandwidth
Band-width utilization
Co-designs
Dynamic scheduling methods
Multirate sampling
Multirate sampling method
Stability of control
Static scheduling methods
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