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When analyzing GPS carrier-phase time transfer (GPSCPTT) data, it is often necessary to estimate the zenith troposphere delay (ZTD) at each site as a function
David Mills, Judah Levine, Richard Schmidt, David Plonka
The public time servers operated by USNO and NIST provide time synchronization, directly or indirectly, to millions of Internet computers today. The load in the
The International Bureau of Weights and Measures (BIPM) calculates International Atomic Time (TAl) and Coordinated Universal Time (UTC) using data from many
Svenja A. Knappe, P Schwindt, Vladislav Gerginov, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John Moreland
In this paper we present the latest progress in the development, fabrication, and characterization of a microfabricated atomic frequency reference at NIST. With
Ultra-low noise microwave oscillators are often required to serve as reference signals in precision PM noise measurement systems and in a host of other
This paper discusses the use of ultra-widehand radio signals near 5 GHz to detect moisture problems within building assemblies. Ultra-widehand signals are made
The n-qubit concurrence canonical decomposition (CCD) is a generalization of the two-qubit canonical decomposition SU(4)=[SU(2) (x) SU(2)] ? [SU(2) (x) SU(2)]
Daniel M. Madrzykowski, Nelson P. Bryner, William L. Grosshandler, D W. Stroup
As part of its technical investigation of the fire that occurred in a Rhode Island, USA nightclub in February, 2003, NIST has conducted real-scale experiments
Pharmaceutical steroids are known to differ in isotopic composition from those produced naturally in the body. By measuring the 13 C/ 12C ratio of specific
This paper discusses the use of ultra-wideband radio signals to detect moisture problems within building assemblies. Ultra-wideband signals are made up of a
The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and
Our results extending Kuhn's fault class hierarchy provide a justification for the focus of fault-based testing strategies on detecting particular faults and
Key Comparisons are international inter-laboratory studies used to establish the degree of equivalence between national measurement standards. These studies
Our results extending Kuhn's fault class hierarchy provide a justification for the focus of fault-based testing strategies on detecting particular faults and
A simulator for quantum information systems cannot be both general, that is, easily used for every possible system, and efficient. Therefore, some systems will