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Instantaneous Local Wave Vector Estimation from Multi-spacecraft Measurements Using Few Spatial Points : Volume 22, Issue 7 (14/07/2004)

By Carozzi, T. D.

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Book Id: WPLBN0003975852
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: Instantaneous Local Wave Vector Estimation from Multi-spacecraft Measurements Using Few Spatial Points : Volume 22, Issue 7 (14/07/2004)  
Author: Carozzi, T. D.
Volume: Vol. 22, Issue 7
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2004
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Gough, M. P., Buckley, A. M., & Carozzi, T. D. (2004). Instantaneous Local Wave Vector Estimation from Multi-spacecraft Measurements Using Few Spatial Points : Volume 22, Issue 7 (14/07/2004). Retrieved from http://www.ebooklibrary.org/


Description
Description: Space Science Centre, University of Sussex, Brighton, England. We introduce a technique to determine instantaneous local properties of waves based on discrete-time sampled, real-valued measurements from 4 or more spatial points. The technique is a generalisation to the spatial domain of the notion of instantaneous frequency used in signal processing. The quantities derived by our technique are closely related to those used in geometrical optics, namely the local wave vector and instantaneous phase velocity. Thus, this experimental technique complements ray-tracing. We provide example applications of the technique to electric field and potential data from the EFW instrument on Cluster. Cluster is the first space mission for which direct determination of the full 3-dimensional local wave vector is possible, as described here.

Summary
Instantaneous local wave vector estimation from multi-spacecraft measurements using few spatial points

 

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