Geodesia Espacial
Mostrando 13-13 de 13 artigos, teses e dissertações.
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13. Using the GPS system to estimate the ionospheric refraction in Brazil. / O sistema GPS como ferramenta para avaliação da refração ionosférica no Brasil.
Since the US president decided to turn off the selective availability (SA) one of the biggest error in the GPS system has been the ionosphere refraction. The refraction effect on GPS signals are: delay for the code and an advance for the phase. In the equatorial region, where Brazil is, the refraction presents the biggest variations that are caused by the so
Publicado em: 2002