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Publication
Sistemas de comunicação ótica inter-satélites para aplicações em Defesa - II
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| 3.27 MB | Adobe PDF |
Abstract(s)
Esta dissertação aborda o estudo dos sistemas de intercomunicação utilizados pelos satélites com base em ligações óticas e tem como objetivo final a construção de um recetor ótico em placa impressa.
O recetor ótico foi representado através de um diagrama de blocos. É possível desta forma identificar as funções de cada parte do recetor ótico, relativamente ao sinal recebido. A escolha dos componentes foi feita com base nas vantagens e desvantagens que apresentam, sendo cada um deles explicado e analisado. Tendo em conta as diferentes opções que podem ser realizadas para a modelação de cada bloco, foi escolhida a solução mais indicada e vantajosa para todo o conjunto de componentes que o recetor terá.
Ao longo desta dissertação foi feita uma introdução e explicação de cada fase do recetor, assim como dos seus componentes principais. Para complementar, foram realizados testes práticos a cada bloco, e por vezes ao componente principal em específico desse mesmo bloco.
Conclui-se, que a modelação e elaboração do recetor ótico destinado a baixas frequências é capaz de cumprir todos os objetivos previstos.
This dissertation deals with the study of intercommunication systems used by satellites that use optical link and its ultimate goal is the construction of an optical receiver in a printed board. The optical receiver was represented by a diagram of blocks. It is possible this way identify the functions of each part of the optical receiver, concerning the received signal. The choice of components was made based on their advantages and disadvantages, which have being explained and analyzed. Taking into account the different options that can be taken to the modeling of each block, the most suitable and beneficial to the entire set of components have been chosen. Throughout this dissertation was made an introduction and explanation of each stage of the detector, as well as of its main components. To complement practical tests were performed on each block, and, sometimes, of their main component. It is concluded that the modeling and the optical receiver for low frequency are able to meet all of the objectives laid down.
This dissertation deals with the study of intercommunication systems used by satellites that use optical link and its ultimate goal is the construction of an optical receiver in a printed board. The optical receiver was represented by a diagram of blocks. It is possible this way identify the functions of each part of the optical receiver, concerning the received signal. The choice of components was made based on their advantages and disadvantages, which have being explained and analyzed. Taking into account the different options that can be taken to the modeling of each block, the most suitable and beneficial to the entire set of components have been chosen. Throughout this dissertation was made an introduction and explanation of each stage of the detector, as well as of its main components. To complement practical tests were performed on each block, and, sometimes, of their main component. It is concluded that the modeling and the optical receiver for low frequency are able to meet all of the objectives laid down.
Description
Keywords
Satélites Comunicação ótica Recetor ótico Subsistemas óticos.