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Polarimetrie ground-to-ground and ground-to-air channel characterization in forest environment

Abstract : The precise localization of an injured person in a forest environment can be made owing to his cell phone by deploying a dedicated direction finding equipment in the search zone and placed onboard either a vehicle or a drone. The localization accuracy being strongly dependent on the propagation channel characteristics, measurements have been carried out with a MIMO channel sounder at a center frequency of 1.35 GHz and with an 80 MHz bandwidth. Each array element is a dual-polarized patch antenna allowing a multidimensional polarimetric estimation of the channel. The receiving array is below or over the canopy when onboard a vehicle or at different altitudes when onboard a drone. Path loss, delay spread and coherence bandwidth are studied for different relative orientations of the antennas, including co- and cross-polarization configurations. Directions of arrival of the rays are deduced from the MIMO matrix owing to a high resolution algorithm. © 2017 IEEE.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01622465
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Submitted on : Tuesday, October 24, 2017 - 2:11:35 PM
Last modification on : Wednesday, October 14, 2020 - 3:53:00 AM

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P. Laly, D. Gaillot, M. Lienard, Jean Marie Floc'H, R. Mazari, et al.. Polarimetrie ground-to-ground and ground-to-air channel characterization in forest environment. 11th European Conference on Antennas and Propagation, EUCAP 2017, Mar 2017, Paris, France. ⟨10.23919/EuCAP.2017.7928261⟩. ⟨hal-01622465⟩

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