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The Capon Method for Mercury's Magnetic Field Analysis

Töpfer, Simon; Narita, Yasuhito; Heyner, Daniel; Motschmann, Uwe

Characterization of Mercury's internal and external magnetic field is one of the primary goals of the magnetometer experiment on board the BepiColombo MPO (Mercury Planetary Orbiter) spacecraft. A novel data analysis tool is developed to determine the Gauss coefficients in the multipole expansion using Capon's minimum variance projection method. The construction of the estimator is presented along with a test against the numerical simulation data of Mercury's magnetosphere and a comparison with the least square fitting method shows, that Capon's estimator is in better agreement with the coefficients, implemented in the simulation, than the least square fit estimator.

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Töpfer, S., Narita, Y., Heyner, D., Motschmann, U., 2020. The Capon Method for Mercury’s Magnetic Field Analysis. https://doi.org/10.3389/fphy.2020.00249
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