Estudo anal?tico e num?rico de um enlace digital de comunica??o via sat?lite em condi??o orbital geoestacion?ria

• Ano de defesa: 2004
• Autor(a) principal: Marins, Carlos Nazareth Motta
• Orientador(a): Silveira, Mauricio
• Banca de defesa: Silveira, Mauricio , Kretly, Luiz Carlos , Silveira, Adonias Costa da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Instituto Nacional de Telecomunica??es
• Programa de Pós-Graduação: Mestrado em Engenharia de Telecomunica??es
• Departamento: Instituto Nacional de Telecomunica??es
• País: Brasil
• Palavras-chave em Português: Enlaces via sat?lite; intermodula??o; n?o-linearidade; transponder; esta??es terrenas
• Área do conhecimento CNPq: Engenharia - Telecomunica??es
• Link de acesso: http://tede.inatel.br:8080/tede/handle/tede/85

Satellite links are affected by the propagation conditions offered by the And distortions generated by the orbital repeater itself. The attenuations and Losses due to the environment and the passive components are well discussed and Well defined. However, the systems in some cases are over dimensioned To attend to the possible degenerations that are not considered in the calculations. This one This work presents an analysis of all satellite links, discussing in a more Intermodulation products and the degenerations caused by Transponders that affect the carrier / noise ratio. With equations obtained through Of finite induction, it is possible to obtain the values ??of the carrier-to-noise ratio of Intermodulation according to the amplitude of the carriers, the number of carriers That travel simultaneously through the orbital repeater, and the transfer function of the Transponder.