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High fidelity surface charging and magnetic noise analysis of the Juno magnetometer

Show simple item record Chinn, James Kartolov, Boyan Kim, Wousik Katz, Ira 2019-05-14T19:51:56Z 2019-05-14T19:51:56Z 2016-04-04
dc.identifier.citation 14th Spacecraft Charging Technology Conference, Noordwijk, The Netherlands, April 4 2016 en_US
dc.identifier.clearanceno 16-1148
dc.description.abstract During Earth flyby of NASA’s Juno spacecraft, unexpected noise was observed in magnetometer data. The noise is attributed to surface currents sourced from ionospheric plasma and directed through the magnetometer boom structure by a vxB electric field. Approximate hand calculations under-predicted the severity of the noise by an order of magnitude. In response, a high fidelity analysis was performed to assess confidence in our model and risk to magnetometer science at Jupiter. Combining NASCAP2k with commercial FEA software, and using detailed inputs from a variety of environment models and CAD tools, the observed effect at Earth was replicated with agreement to a factor of 2. Extending the model to the Jovian environment, we predict a signal-to-noise ratio that is more favourable than at Earth and acceptable to magnetometer science. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2016 en_US
dc.title High fidelity surface charging and magnetic noise analysis of the Juno magnetometer en_US
dc.type Preprint en_US

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