2026-04-17T17:10:46Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3903942025-10-03T09:25:25Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Luís, Diana Zaida Felgueiras author Viladegut, Alan author Camps Carmona, Adriano José author Chazot, Olivier author 2023 Spacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization due to the high temperatures on the shock layer. The high electron number densities cause attenuation and rotation of the emitted signal, leading to communication blackout. This work presents experimental measurements of radio signal attenuation and Faraday rotation due to an ionized plasma flow. These measurements are conducted at the VKI Plasmatron using circularly polarized directive horn lens antennas with a waveguide orthomode transducer. Clear attenuations are observed when the signal is propagating through the plasma, and Faraday rotation measurements show a good agreement with the theoretical estimation. Diana Luıs research is funded by a doctoral fellowship (2021.04930.BD) granted by Fundaçao para a Ciencia e Tecnologia (FCT Portugal). The MEESST project is funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 899298. Postprint (author's final draft) Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal Plasma (Ionized gases) Faraday effect Signal processing Plasma flow Inductively coupled plasma wind tunnel Communication blackout Radio signal attenuation Faraday rotation Plasma (Gasos ionitzats) Efecte Faraday Tractament del senyal Experimental measurements of radio signal attenuation and Faraday rotation in an inductively coupled plasma facility