Sistema Automático de Apontamento de Antena para Receptores Satelitais nas Bandas C e Ku
Anderson S. de Jesus, Rebeca N. Rodrigues, Adolpho N. G. Ferreira, Eddie B. L. Filho, Waldir S. S. Júnior, Victor H. Valente, Wheidima C. Melo
Evento: XXXV Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2017)
Keywords: Digital Television Satellite Communications An- tenna Alignment DTH
AbstractCurrently, satellite TV services present great co- verage and allow the transmission of audio and video infor- mation to distant locations, with the advantages provided by geostationary satellites. Nonetheless, beyond device activation, RF signals at system inputs are also necessary, which is obtained from aligned antennas. In addition, even with such setup, there are applications where earth stations present variation, such as car-roof mount and boat antennas, which demand constant correction. The existing schemes applied to those are complex, suitable to high performance systems, and generally need many reception elements, which provide error signals through spatially distributed references. The present article address this problem and proposes a simple methodology, which can be seen as a viable simplification of the existing methods that uses many modules available in commercial receivers, leading to low cost. Finally, experimental results demonstrate its effectiveness and applicability.