2026-04-13T01:32:36Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4155072025-10-03T09:50:35Zcom_2072_1033col_2072_452950

Mitigación del “radio blackout” durante la reentrada de naves espaciales García Sánchez, David Luís, Diana Zaida Felgueiras Camps Carmona, Adriano José Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica Radio blackout Electromagnetic waves Radio waves The “radio blackout” phenomenon is the communications loss between a spacecraft and the Earth during the re-entry in the atmosphere. The intense heating of the air around the spacecraft ionizes it creating a plasma layer that prevents the propagation of electromagnetic waves. Several techniques have been proposed to mitigate this phenomenon, such as the use of higher frequencies, the aerodynamic shape of the reentry capsule, the cooling of the thermal shield itself, or the creation of an intense magnetic field. However, none of them is completely effective. This paper describes the underlying Physics, presents the simulation results of the plasma properties around an ARD-like reentry capsule in terms of electron density, temperature, and pressure, and the attenuation in [dB/m] at three different heights. It is shown that the presence of an intense magnetic field significantly reduces the cut-off frequency and the attenuation above it favoring the propagation of radio waves. Este trabajo ha sido financiado en parte por el proyecto “GENESIS: GNSS Environmental and Societal MissionsSubproject UPC”, PID2021-126436OB-C21, del MCIN/AEI/10.13039/501100011033/ y EU FEDER “Otra manera de hacer Europa,” y por el proyecto MEESST de la Unión Europea Horizon 2020 grant agreement No 899298. Diana Luís ha sido financiada con una beca doctoral (2021.04930.BD) de la Fundação para a Ciência e Tecnologia (FCT Portugal). Peer Reviewed Postprint (published version) 2024 Conference report info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126436OB-C21/ES/GNSS ENVIRONMENTAL AND SOCIETAL MISSIONS - SUBPROJECT UPC/ Open Access Unión Científica Internacional de Radio (URSI)