Application of two-dimensional time-domain correlation method to stepped-frequency radar motion compensation

2009 ◽  
Author(s):  
Zuo Yanqin ◽  
Zhu Yongfeng ◽  
Zhao Hongzhong ◽  
Fu Qiang
Keyword(s):  
Time Domain ◽  
Motion Compensation ◽  
Correlation Method ◽  
Two Dimensional ◽  
Stepped Frequency ◽  
Time Domain Correlation

Velocity Profile Measurement in Turbulent Pipe Flow Using Ultrasound Time-Domain Correlation Method

2002 ◽  
Author(s):  
Gentaro Yamanaka ◽  
Hiroshige Kikura ◽  
Masanori Aritomi
Keyword(s):  
Velocity Profile ◽  
Time Domain ◽  
Pipe Flow ◽  
Correlation Method ◽  
Turbulent Pipe Flow ◽  
Profile Measurement ◽  
Doppler Method ◽  
Velocity Profile Measurement ◽  
Pulse Doppler ◽  
Time Domain Correlation

This paper presents a velocity profile measurement technique using a ultrasound time-domain correlation method (UTDC). The system is based on the cross correlation between two consecutive echoes of ultrasonic pulses to detect the velocity. The UTDC has two advantages over a conventional ultrasound pulse Doppler method. First, the system has a higher time resolution than the pulse Doppler method. Second, the system does not have a limitation in maximum measurable velocity, which is limited by Nyquist’s sampling theorem. In this paper, the velocity profile measurement in turbulent pipe flow using the UTDC is performed.

Characterization of TWTA nonlinearity by means of a time-domain correlation method

2008 ◽  
Author(s):  
Enrico Colzi ◽  
Piero Angeletti ◽  
Marinella Aloisio ◽  
Salvatore D'Addio ◽  
Roger Oliva Balague ◽  
...  
Keyword(s):  
Time Domain ◽  
Correlation Method ◽  
Time Domain Correlation

Study on Velocity Profile Measurement Using Ultrasound Time-Domain Correlation Method

2001 ◽  
Author(s):  
Gentaro Yamanaka ◽  
Hiroshige Kikura ◽  
Masanori Aritomi
Keyword(s):  
Velocity Profile ◽  
Time Domain ◽  
Correlation Method ◽  
Sampling Theorem ◽  
Profile Measurement ◽  
Doppler Method ◽  
Measurable Velocity ◽  
Velocity Profile Measurement ◽  
Pulse Doppler ◽  
Time Domain Correlation

Abstract This paper presents a velocity profile measurement technique using a ultrasound time-domain correlation method (UTDC). The system is based on the cross correlation between two consecutive echoes of ultrasonic pulses to detect the velocity. The UTDC has two advantages over a conventional ultrasound pulse Doppler method. First the system has a higher time resolution than the pulse Doppler method. Second, the system does not have a limitation in maximum measurable velocity, which is limited by Nyquist’s sampling theorem. In this paper, the velocity profile measurement using the UTDC is performed, and the velocity profiles measured by the UTDC is compared with the one obtained using the pulse Doppler method. The result showed that aliasing effect occured by the measurement of the pulse Doppler method but does not occured by that of the UTDC at the same pulse repetation frequency.

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