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Standards

Reference instruments

News and Updates

Projects and Programs

Sensing and Imaging of concealed objects

Ongoing
Threats to personal and collective safety abound in our society. The Security Technologies Group (STG) performs research to advance the technology and measurement science of security imaging and sensing. This work includes the establishment of test and evaluation tools, reference test beds, test
Illustration of satellite sensing of sunlight reflected by buildings, roads, water and trees to assess radiative warming of the earth.

Climate Science

Ongoing
This program encompasses multifaceted efforts to advance the metrology of climate science. Projects include: development of ultra-high accuracy optical standards and technologies to determine greenhouse gases (GHGs) concentrations, atmospheric lifetimes, and aerosol radiative forcing development of
Laser Power and Energy Meter Calibration team

Laser Power and Energy Meter Calibration

Ongoing
For calibrating instruments used to measure the power or energy emitted by a laser, or single photon source specially designed primary and secondary standards consisting of calorimeters, pyroelectric detectors, thermal radiometers, photodiode traps and recently superconducting nanowire single-photon

Material Qualification

Ongoing
Objective To develop, utilize, and analyze methods of characterizing the precursor materials in additive manufacturing in both virgin and recycled states with the goal of advancing measurement science to benefit the AM community. The components of principal interest will include the rheological

Publications

Feature Description for Assessing Autonomous Vehicle Performance

Author(s)
Edward Griffor, Hadhoum Hajjaj, Thoshitha Gamage, Thomas Roth, Wenqi Guo
This technical report presents a structured methodology for describing and assessing auto-mated vehicle (AV) features, with a focus on ensuring consistent and

Tools and Instruments

Large Aperture Scanner

Large Aperture Scanner

The Large Aperture Scanner (LAS) scans a radar transceiver over a 5 meter by 20 meter aperture. Image reconstruction techniques enable a three-dimensional
Reference Ballistic Chronograph Figure 1

Reference Ballistic Chronograph

The NIST-developed reference ballistic chronograph (RBC) provides repeatable measurements of the speed of a bullet that will impact a test article, such as