Detection of localized structures from multispacecraft data: Adaptive correlation function

Details Detection of localized structures from multispacecraft data: Adaptive correlation function Detection of localized structures from multispacecraft data: Adaptive correlation function

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.2319r&link_type=abstract

Journal of Geophysical Research, Volume 103, Issue A2, p. 2319-2326

Physics

Plasma Physics

4

Magnetospheric Physics: Current Systems, Space Plasma Physics: Discontinuities, Space Plasma Physics: Electrostatic Structures, Space Plasma Physics: Experimental And Mathematical Techniques

Scientific paper

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.

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