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

Carozzi, T D, Buckley, A M and Gough, M P (2004) Instantaneous local wave vector estimation from multi-spacecraft measurements using few spatial points. Annales Geophysicae, 22 (7). pp. 2633-2641. ISSN 0368-4253

Full text not available from this repository.

Abstract

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

Item Type: Article
Additional Information: Here we present a powerful new technique for wave vector measurement in space in the main international (but non-US) geophysics journal.
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Andrew Buckley
Date Deposited: 06 Feb 2012 19:41
Last Modified: 11 Apr 2012 12:18
URI: http://sro.sussex.ac.uk/id/eprint/21769
📧 Request an update