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Mattei, E.
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Mattei, E.
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- PublicationRestrictedElectromagnetic propagation features of ground-penetrating radars for the exploration of Martian subsurface(2006)
; ; ; ; ; ; ; ; ; ; ; ; ;Pettinelli, E.; Dipartimento di Fisica “E. Amaldi”, Università “Roma Tre”, Roma and INFM-Viterbo, Italy ;Vannaroni, G.; Istituto di Fisica dello Spazio Interplanetario, INAF, Roma, Italy ;Mattei, E.; Dipartimento di Scienze Ambientali, Università della Tuscia, Viterbo and INFM-Viterbo, Italy ;Di Matteo, A.; Dipartimento di Fisica “E. Amaldi”, Università “Roma Tre”, Roma and INFM-Viterbo, Italy ;Paolucci, F.; Dipartimento di Fisica “E. Amaldi”, Università “Roma Tre”, Roma and INFM-Viterbo, Italy ;Pisani, A. R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Cereti, A.; Istituto di Fisica dello Spazio Interplanetario, INAF, Roma, Italy ;Del Vento, D.; Istituto di Fisica dello Spazio Interplanetario, INAF, Roma, Italy ;Burghignoli, P.; Dipartimento di Ingegneria Elettronica, Università “La Sapienza”, Roma, Italy ;Galli, A.; Dipartimento di Ingegneria Elettronica, Università “La Sapienza”, Roma, Italy ;De Santis, A.; Dipartimento di Scienze Ambientali, Università della Tuscia, Viterbo and INFM-Viterbo, Italy ;Bella, F.; Dipartimento di Fisica “E. Amaldi”, Università “Roma Tre”, Roma and INFM-Viterbo, Italy; ; ; ; ; ; ; ; ; ; ; In this work, the effects of magnetic inclusions in a Mars-like soil are considered with reference to the electromagnetic propagation features of ground-penetrating radars (GPRs). Low-frequency and time-domain techniques, using L-C-R meters and TDR instruments, respectively, are implemented in laboratory experimental set-ups in order to evaluate complex permittivity and permeability and wave velocity for different scenarios of a dielectric background medium (silica) with magnetic inclusions (magnetite). Attenuation and maximum detection ranges have also been evaluated by taking into account a realistic GPR environment, which includes the transmitting/receiving antenna performance and the complex structure of the subsurface. The analysis and the interpretation of these results shed new light on the significant influence of magnetic inclusions on the performance of Martian orbiting and rover-driven GPRs.260 33 - PublicationOpen AccessElectromagnetic signal penetration in a planetary soil simulant: Estimated attenuation rates using GPR and TDR in volcanic deposits on Mount Etna(2017-05-15)
; ; ; ; ; ; ; ; ; ; ; ;; Ground‐penetrating radar (GPR) is a well‐established geophysical terrestrial exploration method and has recently become one of the most promising for planetary subsurface exploration. Several future landing vehicles like EXOMARS, 2020 NASA ROVER, and Chang'e‐4, to mention a few, will host GPR. A GPR survey has been conducted on volcanic deposits on Mount Etna (Italy), considered a good analogue for Martian and Lunar volcanic terrains, to test a novel methodology for subsoil dielectric properties estimation. The stratigraphy of the volcanic deposits was investigated using 500 MHz and 1 GHz antennas in two different configurations: transverse electric and transverse magnetic. Sloping discontinuities have been used to estimate the loss tangents of the upper layer of such deposits by applying the amplitude‐decay and frequency shift methods and approximating the GPR transmitted signal by Gaussian and Ricker wavelets. The loss tangent values, estimated using these two methodologies, were compared and validated with those retrieved from time domain reflectometry measurements acquired along the radar profiles. The results show that the proposed analysis, together with typical GPR methods for the estimation of the real part of permittivity, can be successfully used to characterize the electrical properties of planetary subsurface and to define some constraints on its lithology of the subsurface.87 177