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Abstract(s)
Intitulada História dos Sistemas de Rádio-posicionamento, esta dissertação pretende fazer um apanhado histórico dos principais sistemas de radionavegação do século XX.
Este tipo de tema de dissertação surge por se denotar, por parte das gerações mais jovens dos oficiais da Marinha Portuguesa, um total desconhecimento no que concerne os sistemas que foram fundamentais para a navegação no século XX. Os jovens oficiais são dotados da capacidade de fazerem navegação astronómica, geonavegação e operarem com os sistemas GPS mais recentes. No entanto, relativamente aos sistemas usados no século passado, o conhecimento é pouco ou inexistente. Com isto é pretendido divulgar esta parte da história para que a geração futura não viva na ignorância de um marco tão importante como a evolução da navegação que hoje conhecemos.
Esta dissertação baseia-se num vasto trabalho de pesquisa, estando fundamentada em pesquisa de acervos documentais e fontes primárias. Foram disponibilizados, pelas bibliotecas de Marinha e do Instituto Hidrográfico, vários documentos detentores de informações fundamentais que contribuíram de forma bastante significativa para o enriquecimento do conteúdo deste projeto.
Pretende-se, nesta dissertação, apresentar, relativamente a cada um dos sistemas de radionavegação, um enquadramento histórico, uma descrição das suas principais características e modos de funcionamento, tipos de documentos auxiliares utilizados e erros associados. Pretende-se ainda, por fim, demonstrar a transição efetuada para os sistemas atuais de navegação por satélite.
Entitled Radiopositioning Systems History, this dissertation intends to make a historical overview of the main radionavigation systems of the twentieth century. This dissertation theme arises by observing that, the younger generations of Portuguese Navy officers, show a complete lack of knowledge regarding the systems that were of utmost importance the twentieth century navigation. Young officers have the ability to perform astronomical navigation, geo navigation and operate with the latest GPS systems. However, regarding the systems used in the last century, any knowledge about the subject is minimal or nonexistent. This dissertation intends to impart this part of history so that future generations do not live in ignorance of such an important milestone as the evolution of navigation we know today was. This dissertation is based on a vast research work, based on the research of documentary collections and primary sources. Several documents containing paramount information were made available by the Navy’s library and the Hydrographic Institute’s library, which were a major factor to the enrichment of this project. In this dissertation, it is intended to present, for each of the radionavigation systems, a historical background, a description of its main characteristics and operating modes, types of auxiliary documents used and associated errors. At last, it is intended to demonstrate the transition made to current satellite navigation systems.
Entitled Radiopositioning Systems History, this dissertation intends to make a historical overview of the main radionavigation systems of the twentieth century. This dissertation theme arises by observing that, the younger generations of Portuguese Navy officers, show a complete lack of knowledge regarding the systems that were of utmost importance the twentieth century navigation. Young officers have the ability to perform astronomical navigation, geo navigation and operate with the latest GPS systems. However, regarding the systems used in the last century, any knowledge about the subject is minimal or nonexistent. This dissertation intends to impart this part of history so that future generations do not live in ignorance of such an important milestone as the evolution of navigation we know today was. This dissertation is based on a vast research work, based on the research of documentary collections and primary sources. Several documents containing paramount information were made available by the Navy’s library and the Hydrographic Institute’s library, which were a major factor to the enrichment of this project. In this dissertation, it is intended to present, for each of the radionavigation systems, a historical background, a description of its main characteristics and operating modes, types of auxiliary documents used and associated errors. At last, it is intended to demonstrate the transition made to current satellite navigation systems.
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Keywords
Sistemas Frequência Estação Navegação Sinal