Título: | AUTOCALIBRATION OF FREQUENCY STANDARDS USING THE INTERNET | ||||||||||||||||||||||||
Autor: |
DALTON VILELA CAMILHER |
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Colaborador(es): |
FERNANDO LAZARO FREIRE JUNIOR - Orientador IVAN MOURILHE SILVA - Orientador |
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Catalogação: | 10/OUT/2001 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=2015@1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=2015@2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=2015@4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.2015 | ||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||
The time and frequency calibration of atomic standards
presents the inconvenience of the need of transportation of
the Transfer Standard to the laboratories in which stay the
standards to be calibrate. This happens because the
laboratories do not possess a way to send its standards to
the Departamento do Serviço da Hora do Observatório
Nacional (DSH/ON), organ representative of INMETRO in Time
and Frequency calibrations and detainer of the National
Standard. This work intends the substitution of the
procedure adopted today by a system of automatic
calibration using Internet, eliminating the need of the
displacement of the Transfer Standard. In this new
procedure, the reference is t he Global Position Sistem
(GPS) receiver, assuming the role of the Transfer Standard,
to which the standard to be calibrate is compared
continuosly. The access and storage of the data for the
DSH/ON are made by means of a computer code that remotely
controls the calibration through an Internet connection.
The present work involves a comparison among both systems,
the whole development and presentation of the computer
code, the assembling of a complete system of practical
simulation, the acquisition and data treatment and the
presentation of the procedure used to obtain the
measurement of the uncertainty. The advantage of an
automatic calibration system, as well as of the collection
of the data, is the fact that it not depending of the
transportation of the Reference Standard for the
accomplishment of the calibratio. As a conclusion of this
work the obtained uncertainty is compared with the one in
use today and based in this comparison we made
considerations about the implementation of the new system
and the use of the GPS receiver as Transfer Standard.
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