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PIERS Online
Vol. 4
No. 5
2008
pp: 561-565A New Approach to Mars Ionosphere CharacterisationMarco Iorio, F. Fois, Riccardo Mecozzi, Giovanni Picardi, Roberto Seu, and E. Flamini doi:10.2529/PIERS071214131541 Downloads: 626 Abstract:Recently in order to investigate the distribution of water, liquid and solid, in the upper portions of the Martian's crust, two different instruments are operatives, the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) and the SHAallow RADar (SHARAD). The secondary objective of the MARSIS instrument is the Mars Ionosphere characterisation through the Active Ionosphere Sounding (AIS) sensor. This operative mode presents the frequency agility capability in order to estimate the Mars ionosphere spectral properties. This method allows the sounding of the ionosphere first layer only. However another method to characterise the Mars ionosphere can be used. Here will be presented a new ionosphere data inversion approach using the ground penetrating (GPR) data in order to remove the data instability and the solutions uncertainly. After the analytical data inversion formulation will be evaluated the performances of the method and its applicability. Finally, will be presented an application to the experimental data in order to test the proposed ionosphere data inversion method.References:1. Gurnet, D. A. and et al., "Radar soundings of the ionosphere of Mars," Science, Vol. 30, November, 2005. 2. Safenili, A., W. Kofman, J.-F. Nouvel, A. Herique, and R. L. Jordan, "Impact of Mars ionosphere on orbital radar sounder operation and data processing," Planetary and Space Science, Vol. 51, No. 7, June, 2003. 3. Picardi, G. and et al., "Mars ionosphere data inversion by MARSIS subsurface signals analysis," Geophysical Research, Vol. 8, 2006. 4. Hansot, W. B. and et al., "The martian ionosphere as observed by the Viking retarding potential analyzers," Journal of Geophysical Research, Vol. 82, 1977. 5. Picardi, G. and S. Sorge, "Adaptive compensation of Mars ionosphere dispersion," , Technical Report, University of Rome `La Sapienza', 1999. 6. Iorio, M., "GPR sensors: Modelling and inversion approach," PhD Thesis, University of Rome `La Sapienza', 2004. 7. Biccari, D., G. Picardi, and R. Seu, "Adaptive compensation of Mars ionosphere dispersion in the MARSIS experiment," IEEE, 2001. 8. Ilyushin, Y. A., V. E. Kunitsyn, and T. Hagfors, "A new algorithm for ionosphere correction in the MARSIS experiment," , Technical Report, Moscow State University, 2000. |
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