The Development of a Unified Time and Frequency Program in the SIM Region

López-Romero, J. Mauricio; Lombardi, Michael A.

doi:10.1080/19315775.2010.11721524

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…A complete description of the SIMTN that includes an uncertainty analysis of its comparisons, which is typically less than 15 ns (k = 2), is provided in [4]. A discussion of benefits that SIM NMIs receive from the SIMTN is provided in [7].…”

Section: A Sim Time Networkmentioning

confidence: 99%

SIM Time Scale

López-Romero

Lombardi

Diaz-Munoz

et al. 2013

IEEE Trans. Instrum. Meas.

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Time measurement is of great importance for science, technology, and commerce. Among the seven base units of the International System of Units, the second can be realized with the smallest uncertainty, currently reaching parts in 10 16 . Keeping track of the continuous accumulation of seconds allows the formation of time scales that serve as references for applications that require synchronization to national and international standards. This paper presents and discusses a multinational time scale developed for the Sistema Interamericano de Metrologia (SIM). This time scale, known as the SIM time scale, or SIMT, was developed to complement the official world time scale, Coordinated Universal Time, by providing real-time support to the operational timing systems within the SIM region. SIMT is generated from automated comparisons of time standards in North, Central, and South America, and is believed to be the first operational multinational time scale whose results are continuously published in real time via the Internet.

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Section: A Sim Time Networkmentioning

confidence: 99%

SIM Time Scale

López-Romero

Lombardi

Diaz-Munoz

et al. 2013

IEEE Trans. Instrum. Meas.

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“…Adicionalmente, muestra gráficos de estos valores, valores promedio y desviaciones de Allan. El sistema calcula una escala de tiempo llamada SIMT (SIM Time Scale) [17] a partir de los datos de todos los países que tienen relojes de cesio, promediados según el peso de la incertidumbre de cada uno. A modo de ejemplo, en la Figura XIV se observa la comparación entre los relojes de UTE y NIST.…”

Section: Comparación De Relojes Atómicos -unclassified

Desarrollo de patrones de tiempo y frecuencia en Uruguay

Trigo,

García,

Slomovitz

2023

Memoria investig. ing. (Facultad Ing., Univ. Montev.)

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“…This need is most apparent in regions such as Central and South America [14] and Africa [15], where new national timing laboratories are still being established, and where many existing laboratories have yet to contribute to UTC. These laboratories have limited financial resources.…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost Time Transfer Receiver for Contributions to Coordinated Universal Time

Lombardi

Novick

Zhang

2014

J. RES. NATL. INST. STAN.

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This paper describes a low-cost time transfer receiver that allows timing laboratories, including national metrology institutes and other designated institutions, to contribute data to the computation of Coordinated Universal Time (UTC). The time transfer receiver compares a laboratory’s local realization of UTC, to signals broadcast by Global Positioning System (GPS) satellites. It stores the measurement results in a format compatible with international standards, and sends data via the Internet to the Bureau International des Poids et Mesures (BIPM) for inclusion in the UTC computation. In addition to being inexpensive, the receiver was designed to be easy to use, allowing recently established timing laboratories to begin contributing to UTC with a minimal investment in training.

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The Development of a Unified Time and Frequency Program in the SIM Region

Cited by 5 publications

References 8 publications

SIM Time Scale

SIM Time Scale

Desarrollo de patrones de tiempo y frecuencia en Uruguay

A Low-Cost Time Transfer Receiver for Contributions to Coordinated Universal Time

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