{"id":7868,"date":"2023-08-25T09:50:45","date_gmt":"2023-08-25T07:50:45","guid":{"rendered":"https:\/\/www.donalba.com\/ligacao-de-dados\/"},"modified":"2024-06-19T16:35:42","modified_gmt":"2024-06-19T14:35:42","slug":"ligacao-de-dados","status":"publish","type":"page","link":"https:\/\/www.donalba.com\/pt-pt\/ligacao-de-dados\/","title":{"rendered":"Liga\u00e7\u00e3o de dados"},"content":{"rendered":"

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LIGA\u00c7\u00c3O DE DADOS<\/strong><\/h1>\n

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Capacidade e gest\u00e3o da encripta\u00e7\u00e3o<\/strong><\/h2>\n

O sistema de comunica\u00e7\u00e3o suporta a cifragem utilizando um algoritmo de cifragem interno AES.256 (CBC). O bloco de cifra pode ser omitido para permitir um modo de funcionamento n\u00e3o encriptado. O sistema suporta a inje\u00e7\u00e3o de chaves pelo cliente atrav\u00e9s de um carregador de chaves designado, fornecido pelo cliente ou desenvolvido pelo fornecedor.<\/p>\n

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Compress\u00e3o de v\u00eddeo<\/strong><\/h3>\n

O sistema de comunica\u00e7\u00e3o inclui um codificador e descodificador de v\u00eddeo que utiliza a norma de compress\u00e3o de v\u00eddeo H.264. O transmissor-recetor remoto pode ser ligado a uma fonte de v\u00eddeo composto anal\u00f3gico ou a uma interface SDI, utilizando uma unidade de codifica\u00e7\u00e3o de v\u00eddeo Commtact.
O Terminal Central de Dados Terrestres transmite o v\u00eddeo para o leitor de v\u00eddeo instalado nos computadores da esta\u00e7\u00e3o de controlo.<\/p>\n

R\u00e1dio definido por software<\/strong><\/h3>\n

Os produtos Commtact baseiam-se numa arquitetura de r\u00e1dio definida por software (SDR) que melhora as capacidades e a fiabilidade do sistema. O design do SDR permite que a Commtact forne\u00e7a aos nossos clientes tecnologia de ponta que pode ser facilmente adaptada \u00e0s suas necessidades. Para responder \u00e0 evolu\u00e7\u00e3o das exig\u00eancias tecnol\u00f3gicas, os sistemas SDR podem ser facilmente actualizados pelo cliente. A atualiza\u00e7\u00e3o baseia-se numa atualiza\u00e7\u00e3o do software e do firmware sem necessidade de alterar o hardware.<\/p>\n

Seguran\u00e7a da transmiss\u00e3o (TRANSEC)<\/strong><\/h3>\n

O sistema implementa duas t\u00e9cnicas complementares: Direct Sequence Spread Spectrum Spread Spectrum (DSSS) ou Frequency Hopping (FH), destinadas a contrariar os bloqueadores hostis, bem como a reduzir a pegada electromagn\u00e9tica da transmiss\u00e3o, reduzindo assim a sua exposi\u00e7\u00e3o a partes hostis, obtendo uma baixa probabilidade de interce\u00e7\u00e3o (LPI) e conseguindo privacidade, aumentando assim a robustez do sistema. <\/p>\n

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SOLICITAR INFORMA\u00c7\u00d5ES<\/h3>\n

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