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Topic Area: Time and Frequency
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Displaying records 41 to 50 of 53 records.
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41. The Development of a Unified Time and Frequency Program in the SIM Region
Topic: Time and Frequency
Published: 9/1/2010
Authors: Michael A Lombardi, J. Mauricio Lopez-Romero
Abstract: The Sistema Interamericano de Metrologia (SIM) is one of five major regional metrology organizations (RMOs) recognized by the Bureau International des Poids et Mesures (BIPM). SIM is composed of the national metrology institutes (NMIs) located in th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906191

42. The First Measurements with Octave-Spanning Femtosecond Laser Frequency Combs
Topic: Time and Frequency
Published: 3/13/2004
Authors: Scott A Diddams, David J. Jones
Abstract: Here we describe in a historical manner the first optical frequency measurement measurements with octave-spanning frequency combs and the first measurement and stabilization of the carrier-envelope offset frequency for a train of femtosecond laser pu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905284

43. The Relativistic Red Shift with 2 {multiply} 10^u-17^ Uncertainty at NIST, Boulder, CO USA
Topic: Time and Frequency
Published: 1/1/2000
Authors: N K Pavlis , Marc A Weiss
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=105543

44. The SIM Time Network
Topic: Time and Frequency
Published: 3/1/2011
Authors: Michael A Lombardi, Andrew N Novick, J. Mauricio Lopez-Romero, Francisco Jimenez, Eduardo de Carlos Lopez, Jean-Simon Boulanger, Raymond Pelletier, Ricardo de Carvalho, Raul Solis, Harold Sanchez, Carlos Andres Quevedo, Gregory Pascoe, Daniel Perez, Eduardo Bances, Leonardo Trigo, Victor Masil, Henry Postigo, Anthony Questelles
Abstract: The Sistema Interamericano de Metrologia (SIM) is a regional metrology organization (RMO) whose members are the national metrology institutes (NMIs) located in the 34 nations of the Organization of American States (OAS). The SIM/OAS region extends t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905218

45. The SIM Time Network and its Contributions to Metrology in the Americas
Topic: Time and Frequency
Published: 4/1/2009
Author: Michael A Lombardi
Abstract: The SIM Time Network (SIMTN) has been one of the great success stories of the Sistema Interamericano de Metrologia (SIM), a regional metrology organization (RMO) that includes the 34 member nations of the Organization of American States (OAS). The S ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902059

46. The SIM Time and Frequency Network
Topic: Time and Frequency
Published: 12/1/2008
Authors: Michael A Lombardi, Andrew N Novick, Jose M. Lopez, Francisco Jimenez, Jean-Simon Boulanger, Raymond Pelletier, Ricardo de Carvalho, Raul Solis, Carlos Donado, Harold Sanchez, Carlos Andres Quevedo, Gregory Pascoe, Daniel Perez
Abstract: The {I}Sistema Interamericano de Metrologia{/I} (SIM) consists of national metrology institutes (NMIs) located in the 34 member nations of the Organization of American States (OAS), which extends throughout North, Central, and South America, and the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842555

47. The global positioning system, relativity, and extraterrestrial navigation
Topic: Time and Frequency
Published: 4/27/2009
Author: Neil Ashby
Abstract: Relativistic effects play an important role in the performance of the Global Positioning System (GPS) and in world-wide time comparisons. The GPS has provided a model for algorithms that take relativistic effects into account. In the future explorati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904814

48. Time Measurement
Topic: Time and Frequency
Published: 2/3/2014
Author: Michael A Lombardi
Abstract: An overview of time metrology, with emphasis on time interval measurements, and time synchronization. It covers the evolution of clocks and timekeeping, time scales, the fundamentals of time measurement, and the various time transfer technique used ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907332

49. Towards Timely Intelligence in the Power Grid
Topic: Time and Frequency
Published: 2/25/2013
Authors: YaShian Li-Baboud, Julien Marc Amelot, Dhananjay Anand, Gerard Nordeen Stenbakken, Thomas L Nelson, James Moyne
Abstract: One of the key lessons learned from the 2003 Northeast Blackout in the United States was the need for improved timing. The problem began as an isolated issue, but cascaded through the Northeastern grid. Timely situational awareness would likely have ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913150

50. Two-Way Satellite Time and Frequency Transfer Using 1 MChip/S codes
Topic: Time and Frequency
Published: 11/16/2009
Authors: Victor Shufang Zhang, Thomas Edward Parker, Demetrios Matsakis, Joseph Achkar, Daniele Rovera, Dirk Piester, Andreas Bauch, Luca Lorini
Abstract: The Ku-band transatlantic and Europe to Europe two-way satellite time and frequency transfer (TWSTFT) operations used the 2.5 MChip/s pseudo-random codes with 3.5 MHz bandwidth until the end of July, 2009. The cost of TWSTFT operation is associated w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904297



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