Cross-correlation properties of multiply-scattered dichromatic light from flowing colloidal particles

1994 ◽  
Vol 1 (2) ◽  
pp. 139-142
Author(s):  
Takashi Okamoto ◽  
Toshimitsu Asakura
Keyword(s):  
Cross Correlation ◽  
Colloidal Particles ◽  
Correlation Properties

Cross-Correlations in the Brownian Motion of Colloidal Nanoparticles

2020 ◽  
Vol 65 (1-2) ◽  
pp. 27-34
Author(s):  
Sz. Kelemen ◽  
◽  
L. Varga ◽  
Z. Néda ◽  
◽  
...  
Keyword(s):  
Brownian Motion ◽  
Power Law ◽  
Cross Correlation ◽  
Colloidal Particles ◽  
Pearson Correlation ◽  
Transverse Component ◽  
Collective Effects ◽  
Colloidal Nanoparticles ◽  
Diffusive Motion ◽  
Cross Correlations

"The two-body cross-correlation for the diffusive motion of colloidal nano-spheres is experimentally investigated. Polystyrene nano-spheres were used in a very low concentration suspension in order to minimize the three- or more body collective effects. Beside the generally used longitudinal and transverse component correlations we investigate also the Pearson correlation in the magnitude of the displacements. In agreement with previous studies we find that the longitudinal and transverse component correlations decay as a function of the inter-particle distance following a power-law trend with an exponent around -2. The Pearson correlation in the magnitude of the displacements decay also as a power-law with an exponent around -1. Keywords: colloidal particles, Brownian motion, cross-correlation. "

scholarly journals Cross-Correlation Properties of Costas Arrays and Their Images under Horizontal and Vertical Flips

2008 ◽  
Vol 2008 ◽  
pp. 1-11 ◽  
Author(s):  
Konstantinos Drakakis ◽  
Rod Gow ◽  
John Healy ◽  
Scott Rickard
Keyword(s):  
Cross Correlation ◽  
The Cross ◽  
Correlation Properties

We consider the cross-correlation of a Costas array with its image under a horizontal and/or a vertical flip. We propose and prove several bounds on the maximal cross-correlation and on its value at the origin, for both general Costas arrays and for algebraically constructed ones.

Netted Radar System Design with Spread Spectrum Technology

2011 ◽  
Vol 55-57 ◽  
pp. 648-653
Author(s):  
Lian Qing Fu ◽  
Li Sheng Yang ◽  
Tao Wang ◽  
Qing Le Zhang
Keyword(s):  
System Design ◽  
Spread Spectrum ◽  
Cross Correlation ◽  
Mutual Interference ◽  
Radar System ◽  
Power Ratio ◽  
Emission Signal ◽  
Simulation Results ◽  
Correlation Properties

In this paper, a novel netted radar system is designed to reduce the influence of mutual interference between signals. The emission signals of all stations are assigned the orthogonal PN codes. Because of the good autocorrelation and cross-correlation properties, mutual interference becomes weaker and signals from different stations could be separated by the preassigned PN codes. At the same time, the spectrum of the emission signal is spreaded, the peak-to-mean envelope power ratio (PMEPR) and the intercepted probability of the signals descend therefore. Simulation results show the good performance of the proposed approach.

scholarly journals On the Impact of Channel Cross-Correlations in High-Sensitivity Receivers for Galileo E1 OS and GPS L1C Signals

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Davide Margaria ◽  
Beatrice Motella ◽  
Fabio Dovis
Keyword(s):  
Cross Correlation ◽  
High Sensitivity ◽  
Global Navigation Satellite Systems ◽  
Integration Time ◽  
Noise Component ◽  
Satellite Systems ◽  
Coherent Integration ◽  
Global Navigation Satellite ◽  
Correlation Properties ◽  
The Impact

One of the most promising features of the modernized global navigation satellite systems signals is the presence of pilot channels that, being data-transition free, allow for increasing the coherent integration time of the receivers. Generally speaking, the increased integration time allows to better average the thermal noise component, thus improving the postcorrelation SNR of the receiver in the acquisition phase. On the other hand, for a standalone receiver which is not aided or assisted, the acquisition architecture requires that only the pilot channel is processed, at least during the first steps of the procedure. The aim of this paper is to present a detailed investigation on the impact of the code cross-correlation properties in the reception of Galileo E1 Open Service and GPS L1C civil signals. Analytical and simulation results demonstrate that the S-curve of the code synchronization loop can be affected by a bias around the lock point. This effect depends on the code cross-correlation properties and on the receiver setup. Furthermore, in these cases, the sensitivity of the receiver to other error sources might increase, and the paper shows how in presence of an interfering signal the pseudorange bias can be magnified and lead to relevant performance degradation.

scholarly journals Triggered single-photon emission and cross-correlation properties in InAlAs quantum dot

2006 ◽  
Vol 32 (1-2) ◽  
pp. 144-147 ◽  
Author(s):  
Hidekazu Kumano ◽  
Satoshi Kimura ◽  
Michiaki Endo ◽  
Ikuo Suemune ◽  
Hirotaka Sasakura ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Cross Correlation ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Correlation Properties
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