Sistema para medição da atenuação devido à chuva em enlaces de satélites na banda Ku
Among the several impairmentes suffered by an RF satellite signal above 10GHz , the attenuation due to rain, is which causes the most significant and detrimental effect. This attenuation requires reserving a considerable margin in the system project; which leads to increase in power, the use or larg...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Brasil |
| Institución: | Universidade Federal de Uberlândia (UFU) |
| Repositorio: | Repositório Institucional da UFU |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.ufu.br:123456789/14488 |
| Acceso en línea: | https://repositorio.ufu.br/handle/123456789/14488 https://doi.org/10.14393/ufu.di.2012.312 |
| Access Level: | acceso abierto |
| Palabra clave: | Atenuação Chuva Satélite Banda Ku/Ka Antenas Sistemas de telecomunicação Attenuation Rain Satellite Ku/Ka Band Antenna CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
| Sumario: | Among the several impairmentes suffered by an RF satellite signal above 10GHz , the attenuation due to rain, is which causes the most significant and detrimental effect. This attenuation requires reserving a considerable margin in the system project; which leads to increase in power, the use or larger antennas or complex error correction techniques, consequently, leading to increased costs. This work describes the design, construction and operation of a receiving system in the Ku / Ka band to measure, date and store the instantly value of both the attenuation and the rain rate, in order to build a database, which allows to study and compare the data obtained the light of the theoretical models used in the projects. The system has a parabolic antenna 4.2 m in diameter with angular movement in elevation and azimuth axes using electric motors, a station for collecting environmental data and an unmodulated carrier receiver (beacon). The antenna was designed to allow a measuring range up to 28dB of attenuation in the signal, considering the typical transmitted signal levels of the satellites currently in geostationary orbits. |
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