@InProceedings{CavalcanteDuar:2015:AqFrFa,
author = "Cavalcante, Hugo Rafael Gon{\c{c}}alves and Duarte, Jose Marcelo
Lima",
affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Aquisi{\c{c}}{\~a}o de frequ{\^e}ncia e fase para
sat{\'e}lites do Sistema Brasileiro de Coleta de Dados",
booktitle = "Anais...",
year = "2015",
editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz
Eduardo Oliveira e Cruz de",
pages = "4392--4399",
organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 17. (SBSR)",
publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
address = "S{\~a}o Jos{\'e} dos Campos",
abstract = "This paper presents a low complexity fully digital frequency and
phase acquisition system to decode signals from Brazilian Data
Collecting System (SBCD) and ARGOS II. This system can be used in
the development of a SBCD and ARGOS signal decoder with complexity
low enough to be embedded aboard nanosatellites. Environmental
data collecting system, as ARGOS and SBCD, are composed by a set
of data collecting platforms (DCP) strategically distributed
throughout geographical area of operation of their system. Each,
DCP consists in one or more sensors, a data logger and a
transmitter. A low-earth-orbit satellite establishes the link
between platforms and receiving stations. Since the signal
arriving on the satellite antenna is subject to Doppler shift and
Doppler rate, a frequency and phase acquisition system with
Doppler rate tracking capability is required to decode the DCP
signals. The proposed system uses the minimum mean square error
technique to estimate the Doppler shift and rate of a received
signal in a short time. It is shown that, in cases of high
signal-to-noise ratio, the proposed method can be implemented
without the feedback loop usually required in frequency
synchronization systems. This allow a shorter synchronization
time. Performance measurement where done by simulate the system
using as input a model of the SBCD signal in the worst case
scenario, Doppler Rate of 120 Hz/s.",
conference-location = "Jo{\~a}o Pessoa",
conference-year = "25-29 abr. 2015",
isbn = "978-85-17-0076-8",
label = "863",
language = "pt",
organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
ibi = "8JMKD3MGP6W34M/3JM4CNE",
url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3JM4CNE",
targetfile = "p0863.pdf",
type = "Sistemas de coleta de dados e telemetria",
urlaccessdate = "03 jun. 2024"
}