Open AccessDetection of localized structures from multispacecraft data: Adaptive correlation function
Author(s) -
Rezeau L.,
Belmont G.,
Reberac F.
Publication year - 1998
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/97ja02666
Subject(s) - spacecraft , physics , dilation (metric space) , correlation function (quantum field theory) , correlation , structure function , function (biology) , computational physics , statistical physics , geometry , astronomy , mathematics , quantum mechanics , particle physics , evolutionary biology , dielectric , biology
When several spacecraft pass at different distances from a localized structure like a field‐aligned current tube, the corresponding magnetic signatures recorded on each spacecraft generally show different timescales, due to the different “viewpoints” of the spacecraft. For this reason, it is impossible to identify the presence of a unique structure from these signatures by using the classical correlation functions. In this paper, we present an “adaptive correlation function” which is a new analysis tool allowing to look for such “correlations” whatever the dilation factor is between two signals.