Information retrieval and cross-correlation function analysis of random noise radar signal through dispersive media

2012 ◽  
Author(s):  
Ana Vazques Alejos ◽  
Muhammad Dawood
Keyword(s):  
Information Retrieval ◽  
Correlation Function ◽  
Cross Correlation ◽  
Function Analysis ◽  
Random Noise ◽  
Cross Correlation Function ◽  
Radar Signal ◽  
Dispersive Media ◽  
Noise Radar ◽  
Random Noise Radar

Structural Damage Detection with Cross Correlation Function of Vibration Observations

2010 ◽  
Vol 163-167 ◽  
pp. 2776-2779
Author(s):  
Jia Yan Lei ◽  
Qian Feng Yao ◽  
Ying Lei
Keyword(s):  
Correlation Function ◽  
Structural Damage ◽  
Cross Correlation ◽  
Damage Identification ◽  
Function Analysis ◽  
Cross Correlation Function ◽  
Building Model ◽  
Identification Technique ◽  
Test Points ◽  
Shear Building

A structural damage identification technique based on cross correlation function analysis of vibration measurements is proposed. An 8-storey steel shear building model has been chosen as the case verification. Structural acceleration responses from neighbouring test points are used to establish damage identification parameters. Experimental analysis shows that the method can achieve quite precise results.

scholarly journals Instantaneous cross-correlation function type of WD based LFM signals analysis via output SNR inequality modeling

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Sheng-Zhou Qiang ◽  
Xian Jiang ◽  
Pu-Yu Han ◽  
Xi-Ya Shi ◽  
An-Yang Wu ◽  
...  
Keyword(s):  
Correlation Function ◽  
Computational Complexity ◽  
Cross Correlation ◽  
Wigner Distribution ◽  
Random Noise ◽  
Single Component ◽  
Cross Correlation Function ◽  
Detection Accuracy ◽  
Function Type ◽  
Output Snr

AbstractLinear canonical transform (LCT) is a powerful tool for improving the detection accuracy of the conventional Wigner distribution (WD). However, the LCT free parameters embedded increase computational complexity. Recently, the instantaneous cross-correlation function type of WD (ICFWD), a specific WD relevant to the LCT, has shown to be an outcome of the tradeoff between detection accuracy and computational complexity. In this paper, the ICFWD is applied to detect noisy single component and bi-component linear frequency-modulated (LFM) signals through the output signal-to-noise ratio (SNR) inequality modeling and solving with respect to the ICFWD and WD. The expectation-based output SNR inequality model between the ICFWD and WD on a pure deterministic signal added with a zero-mean random noise is proposed. The solutions of the inequality model in regard to single component and bi-component LFM signals corrupted with additive zero-mean stationary noise are obtained respectively. The detection accuracy of ICFWD with that of the closed-form ICFWD (CICFWD), the affine characteristic Wigner distribution (ACWD), the kernel function Wigner distribution (KFWD), the convolution representation Wigner distribution (CRWD) and the classical WD is compared. It also compares the computing speed of ICFWD with that of CICFWD, ACWD, KFWD and CRWD.

scholarly journals A GROUP-GALAXY CROSS-CORRELATION FUNCTION ANALYSIS IN zCOSMOS

2012 ◽  
Vol 755 (1) ◽  
pp. 48 ◽  
Author(s):  
C. Knobel ◽  
S. J. Lilly ◽  
C. M. Carollo ◽  
T. Contini ◽  
J.-P. Kneib ◽  
...  
Keyword(s):  
Correlation Function ◽  
Cross Correlation ◽  
Function Analysis ◽  
Cross Correlation Function ◽  
Group Galaxy

Measurement of the Spatial Cross-Correlation Function of Damped Lyα Systems and Lyman Break Galaxies

2005 ◽  
Vol 636 (1) ◽  
pp. L9-L12 ◽  
Author(s):  
Jeff Cooke ◽  
Arthur M. Wolfe ◽  
Eric Gawiser ◽  
Jason X. Prochaska
Keyword(s):  
Correlation Function ◽  
Cross Correlation ◽  
Cross Correlation Function ◽  
Lyman Break Galaxies
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