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Information Technology Laboratory / Statistical Engineering Division

Boulder Group

Projects/Programs

Displaying 1 - 9 of 9
radiometer_plot

Advanced Microwave Radiometer Metrology

Ongoing
Using the NIST radiometer as a test bed, we studied the stability of temperature measurements for infrequent calibrations and developed stability metrics. We developed models to simulate output temperatures from the NIST radiometer, thus enabling the study of radiometer output without having to
Charpy Machine

Charpy Impact Machine Verification Program

Ongoing
The low cost and simple configuration of the test have made it a common requirement in codes for critical structures. However, the test is not useful if the variation in test results between laboratories is not tightly controlled. The control is accomplished by requiring the indirect verification of
YBITMvsRootModPred

Clutter Measurement

Ongoing
The Irregular Terrain Model (ITM) is a model for radio propagation that has been widely used for predicting the attenuation of a radio signal as a function of distance and the variability of the signal in time and in space. It was developed in the 1960 sand therefore does not fully utilize the

Critical Current Metrology

Ongoing
PML staff have completed the construction and testing of a variable-temperature and variable-strain, or unified, apparatus for measuring critical current. The apparatus combines world class capabilities in variable-temperature and variable-strain measurements and is expected to be the highest
Cardiac Leads

Metrology for Cardiac Leads

Ongoing
Quantifying cardiac lead reliability is not an easy task because of the vastly different conditions under which leads must operate under when installed in a human body. The committee is actively involved in many aspects of cardiac lead reliability including: gage repeatability and reproducibility

Radiative Decay of the Neutron

Ongoing
When a neutron decays by its radiative decay (RDK) mode, it produces a photon with a energy spectrum predicted by Quantum Electrodynamics. These RDK photons deposit energy in scintillators which produce voltage pulses in Avalanche Photo Diodes. We are developing nonlinear calibration models to

Statistical Methods in Millimeter-Wave Wireless Metrology

Ongoing
DESCRIPTION: One of the measurement solutions is the use of reverberation chambers for free-field testing of wireless devices. A reverberation chamber is an environment for electromagnetic compatibility testing and other investigations. Quantities of interest that have been studied for wireless
ghg_test_data3_crop

Surrogate Gas Prediction Model

Ongoing
DESCRIPTION: Since fossil fuels are devoid of 14C, the measured 14C ratio of atmospheric CO 2 (expressed as Delta-C) is the gold standard measurement to determine the fossil fuel enhancement, C ff, to any atmospheric CO 2 measurement. With enough Delta-C measurements, independent, "top-down"