Teste de um receptor em UHF para coleta de dados de sensores por satélite
This master’s thesis presents a test plan, the automation system for carrying out the experiments and the results obtained from the Environmental Data Collector (EDC), UHF receiver for collecting data from satellite sensors. The parameters tested were: bandwidth, linearity, spurious, noise figure...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/49866 |
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| Resumo: | This master’s thesis presents a test plan, the automation system for carrying out the
experiments and the results obtained from the Environmental Data Collector (EDC), UHF
receiver for collecting data from satellite sensors. The parameters tested were: bandwidth,
linearity, spurious, noise figure and performance of the decoding the received signals. The
EDC will act in the space segment of the Brazilian Environmental Data Collection System
(SBCDA), a system for message forwarding through satellite.. For over twenty years, the
SBCDA has provided data for various researches and environment monitoring activities.
However, the SBDCA needs an update to its space segment. The Institute National Space
Research Institute is developing a constellation of nanosatellites from the CubeSat standard
to replace the current SBCDA satellites. The EDC will be the payload of these new SBCDA
nanosatellites. To validate the EDC, a test plan was prepared which aims to assess whether
the prototype built is in accordance with the desired specifications. To carry out the tests,
a bench equipped with a computer, equipped with a testing software, signal generator, a
voltage source and a Arduino. A spectral analysis, from the digitized signal, was used for
testing the RF-Front-End and the Frame Error Rate was used to validate the capacity of
the EDC to decode incoming messages. The EDC prototype was approved with based on
the results obtained, however, some corrections were suggested. |
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