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Polarimetric 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.
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Contributor : Laurent Jonchère <>
Submitted on : Wednesday, November 15, 2017 - 4:17:04 PM
Last modification on : Tuesday, December 8, 2020 - 3:31:34 AM


  • HAL Id : hal-01635767, version 1


P. Laly, D. Gaillot, M. Lienard, Jean Marie Floc'H, R. Mazari, et al.. Polarimetric Ground-to-Ground and Ground-to-Air Channel Characterization in Forest Environment. 11th European Conference on Antennas and Propagation (EUCAP), Mar 2017, Paris, France. ⟨hal-01635767⟩



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