Navegando por Autor "SARMENTO, Thiago Lima"

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Comparison of Satellite Tracking Techniques in Inclined Orbit.
(Universidade Federal do Pará, 2019-01-26) SARMENTO, Thiago Lima; KLAUTAU JÚNIOR, Aldebaro Barreto da Rocha; http://lattes.cnpq.br/1596629769697284
This work implements satellite tracking techniques in inclined orbit and compares their performances with other techniques, describing operation and implementing in a simulation environment and in a real control system to generate the performance evaluation of each one. One of the techniques investigated is reinforcement learning. Tracking satellites in inclined orbit is of paramount importance for telecommunications using this type of link, allowing automatic communication maintenance and extending the service life of satellite services in this situation. Algorithms widely used in tracking, both in the literature and in commercial equipment, result in estimates or predictions of satellite position rather than actual position, and require a study of the specific characteristics of the region where the base station is located. The complexity and investments in the tracking technique vary according to the commitment made in the antenna installation and control systems, being necessary to compare the existing methods before their implementation. The work develops the environment necessary to simulate satellite communication, from reception to antenna movement, to analyze the performance of the technique in different controlled situations. Are also presented the actual implementation techniques results in a real antenna control system.