Measuring the electric properties of planetary environments with Mutual Impedance (MI) Probes

Details Measuring the electric properties of planetary environments with Mutual Impedance (MI) Probes Measuring the electric properties of planetary environments with Mutual Impedance (MI) Probes

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.514..105t&link_type=abstract

In: Earth-like planets and moons. Proceedings of the 36th ESLAB Symposium, 3 - 8 June 2002, ESTEC, Noordwijk, The Netherlands. E

Computer Science

Space Missions: Planetary Environments, Electric Fields

Scientific paper

Mutual Impedance Probes measure the complex permittivity of material by means of a quadrupolar array of electrodes and associated electronics for generating, recording and processing waveforms. MI instruments have been developed for a number of ongoing space missions. The HASI/PWA MI probe will determine the electric properties of the atmosphere of Titan, Saturn's largest moon, during the descent of the Huygens probe. After landing, the instrument will provide data on the properties of Titan's surface materials. The permittivity probe PP, as part of the SESAME instrument package for the Rosetta Lander, will determine the electrical properties of comet Wirtanen's surface. The main features of MI probes are first recapitulated. Instrument architectures for atmospheric, surface and subsurface investigations are described. Results from recent field test campaigns in harsh environments are presented. A new MI probe prototype employing a linear electrode array for application on mobile platforms or on penetrator devices is described. New application areas for future MI probes and relevant technology requirements are discussed.

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