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@InProceedings{CavalcanteSilSouFonDua:2017:AqPaFr,
               author = "Cavalcante, Hugo Rafael Gon{\c{c}}alves and Silveira, Luiz Felipe 
                         de Queiroz and Souza, Samuel Xavier de and Fontes, Aluisio Igor 
                         R{\^e}go and Duarte, Jos{\'e} Marcelo Lima",
          affiliation = "{} and {} and {} and {} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Aquisi{\c{c}}{\~a}o paralela de frequ{\^e}ncia em sinais de 
                         sat{\'e}lites de baixa {\'o}rbita baseada em correntropia",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "6035--6042",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "Low-earth orbit (LEO) satellites move at very high speeds and can 
                         circumscribe the planet several times in a single day. These high 
                         dynamics environments induce considerable Doppler shift and 
                         Doppler rate values in the spatial communications signals, which 
                         is known as dynamic Doppler shift. Establishing communication with 
                         these systems is a multi-task process and, due to the dynamic 
                         Doppler shift, a critical task is the fine acquisition of the 
                         carrier frequency. Several studies have investigated frequency 
                         estimation techniques of satellite signals, considering 
                         communication environments characterized by additive white 
                         Gaussian noise (AWGN). However, the effects of impulsive noise 
                         should also be considered in a more accurate characterization of 
                         the LEO satellite communication scenario. This work introduces a 
                         new method of frequency acquisition for low-orbit satellites based 
                         on a parallel search guided by correntropy coefficients. Due to 
                         some of its properties, correntropy is very efficient in the 
                         processing of non-Gaussian signals, especially in impulsive noise 
                         environments. We investigate the robustness of the technique 
                         proposed in this work on a communication environment characterized 
                         by impulsive noise, and compare its performance with that obtained 
                         by a classical approach, based on the correlation coefficient. In 
                         addition, the proposed method uses parallel computing to reduce 
                         processing time and increase its energy efficiency. The carrier 
                         frequency acquisition method for LEO satellites proposed in this 
                         work can be used in the development of a decoder for signals from 
                         the Brazilian Environmental Data Collection System (SBCDA) and 
                         ARGOS.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59345",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSMC6R",
                  url = "http://urlib.net/rep/8JMKD3MGP6W34M/3PSMC6R",
           targetfile = "59345.pdf",
                 type = "Sistemas de coleta de dados e telemetria",
        urlaccessdate = "28 nov. 2020"
}


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