Least-squares gradient calculation from multi-point observations of scalar and vector fields: methodology and applications with Cluster in the plasmasphere

This paper describes a general-purpose algorithm for computing the gradients in space and time of a scalar field, a vector field, or a divergence-free vector field, from in situ measurements by one or more spacecraft. The algorithm provides total error estimates on the computed gradient, includin...

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Bibliographic Details
Main Authors: J. De Keyser, F. Darrouzet, M. W. Dunlop, P. M. E. Décréau
Format: Article
Language:English
Published: Copernicus Publications 2007-05-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/25/971/2007/angeo-25-971-2007.pdf