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    Least-squares multi-spacecraft gradient calculation with automatic error estimation

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    Authors
    De Keyser, J.
    Discipline
    Physical sciences
    Subject
    environmental gradient
    error analysis
    gradient analysis
    heuristics
    least squares method
    spacecraft
    spatial variation
    temporal variation
    terrestrial environment
    Audience
    Scientific
    Date
    2008
    Metadata
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    Description
    Multi-spacecraft missions allow the gradient of important physical quantities in the terrestrial environment to be determined. The gradient can be computed from four simultaneous measurements in a straightforward way, but this computation does not produce proper error estimates, making it hard to assess the meaningfulness of the result. Recently developed least-squares gradient computation techniques offer the possibility to obtain more precise results with all-inclusive error estimates, provided that information about the non-linearity of the space and time variations of the observed quantity is given. The present paper describes several heuristics for estimating these variations, thereby enabling a fully automatic computation of the gradient and the associated error estimates. The performance of these heuristics is illustrated with synthetic data corresponding to 4- and 10-spacecraft configurations.
    Citation
    De Keyser, J. (2008). Least-squares multi-spacecraft gradient calculation with automatic error estimation. , Annales Geophysicae, Vol. 26, Issue 11, 3295-3316, DOI: 10.5194/angeo-26-3295-2008.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/4325
    doi: http://dx.doi.org/10.5194/angeo-26-3295-2008
    scopus: 2-s2.0-54849416433
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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