Keyword: Calibration

Briefs: Photonics/Optics
This rapid and cost-effective technique yields a uniform etched surface with 99.5 percent emissivity.
Briefs: Test & Measurement

Current laser interferometry pressure pulse detection techniques use the shock-induced change in index of refraction to track detonation and/or shock fronts in a single fiber optic by reflecting laser...

Briefs: Medical
X-ray Measurement Approach Could Improve CT Scanners

A new measurement approach could lead to a better way to calibrate computed tomography (CT) scanners, potentially streamlining patient treatment by improving communication among doctors.

Briefs: Photonics/Optics

Although smartphones and other consumer cameras are increasingly used for scientific applications, it's difficult to compare and combine data from different...

Articles: Test & Measurement

S. Himmelstein and Company (Hoffman Estates, IL) has been designing and manufacturing torque measurement transducers and instrumentation since 1960. The company’s products offer significant...

Briefs: Electronics & Computers
A Robust Waveguide Millimeter-Wave Noise Source

A noise source is an enabling technology for passive millimeter-wave remote sensing applications such as atmospheric sounding, and precipitation and ice cloud measurements. NASA Goddard Space Flight Center has developed a packaged noise source that will allow calibration of the front end at the...

Briefs: Aerospace

NASA's Langley Research Center, in collaboration with Michigan State University (MSU), has developed a microphone array that...

Briefs: Defense
Stray Energy Indicator for Pyrotechnic Applications

A compact and portable system is used to monitor and store real-time measurements of stray energy through a pyrotechnic firing circuit using infrared technology. The infrared sensor is mated to the NASA Standard Initiator simulator, and is calibrated such that the current input through the...

Briefs: Materials

An effective, non-invasive way of monitoring blood glucose could help both diabetics and those at risk of developing diabetes make the right choices to either manage the disease well, or reduce their...

Briefs: Test & Measurement
Correcting the Antenna Temperature of an Earth-Observing Microwave Instrument for Extraterrestrial Contamination

Microwave antennas deployed for spaceborne radiometers are diffraction-limited, with typical beam efficiency of about 90%, and provide relatively poor selectivity against radiation from celestial bodies (Moon, Sun, galaxy) when they...

Articles: Imaging

It's tough to trust measurements from instruments when you don't have a clear understanding of how their sensitivity and accuracy are derived, and many times infrared cameras fall in this category. In...

Briefs: Test & Measurement
EOS MLS Level 2 Data Processing Software, Version 4

This software reads MLS Level 1 products — the Earth Observing System (EOS) Microwave Limb Sounder (MLS) calibrated measurements of microwave radiance products and operational meteorological data — and produces a set of estimates of atmospheric temperature and composition. The software...

Articles: Photonics/Optics

Whether it is the industrial smart robot in the age of the Industrial Internet of Things (IIoT), using three-dimensional data to orient itself in its working space, the reverse vending machine counting empty bottles...

Briefs: Medical

The five-year survival rate of pancreatic cancer is one of the worst — 9 percent — in part because there are no obvious symptoms or non-invasive screening tools to catch a...

Articles: Photonics/Optics

The challenges in achieving greater accuracy in optical thin-film coatings, both historically and in today's coating processes, are many and deserve our scrutiny. The...

Articles: Photonics/Optics

As signal rates approach 50 Gb/s, bandwidth demand has outpaced conventional circuit boards. Engineers are now turning to PAM4 signaling rather than conventional NRZ as the most...

Briefs: Mechanical & Fluid Systems

Researchers at NASA's Armstrong Flight Research Center have developed a new technology to reduce inaccuracies in force/haptic feedback devices and systems. Used at NASA in aircraft...

Briefs: Sensors/Data Acquisition

Phone signals spend at least some time traveling over fiber-optic cables. To ensure that the information gets where it needs to go, and to help researchers find better ways to ferry this information...

Briefs: Software
AUTONOMIE Automotive System Design Software

AUTONOMIE is a MATLAB-based software environment and framework for automotive control system design, simulation, and analysis. It simulates subsystems, systems, or an entire vehicle, and predicts and analyzes fuel efficiency and performance. The software performs analyses and tests for virtual...

Briefs: Aerospace

The in-situ load system (ILS) provides the ground-testing community with a comprehensive tool that...

Briefs: Robotics, Automation & Control

Researchers at NASA's Armstrong Flight Research Center have developed a new technology to reduce inaccuracies in force/haptic feedback devices and systems. Used at NASA in aircraft...

Briefs: Test & Measurement
Method for Ground-to-Satellite Laser Calibration System

NASA’s Langley Research Center has developed the Ground-to-Space Laser Calibration (GSLC) system concept for calibrating Earth observing sensors measuring reflected radiance. GSLC is capable of calibrating sensitivity to polarization, degradation of optics, and response to stray light of...

Briefs: Test & Measurement

NASA’s Langley Research Center has developed a novel method to calculate the relative position and orientation between two rigid objects using a simplified...

Briefs: Materials
Resistive Heating Method for TPS Property Measurements

A unique ultrasonic-based technique has been developed to measure temperature profiles in materials used in thermal protection systems (TPS). The technology requires measurements of the thermal expansion coefficient and the ultrasonic velocity for these materials as a function of temperature...

Briefs: Test & Measurement

NASA’s Langley Research Center has developed a new method for calibrating pitot-static air data systems used in aircraft. Pitot-static systems are pressure-based instruments that measure the aircraft’s...

Briefs: Test & Measurement

The suspension system of parachutes is typically made from ropes (referred to as cordage). Measuring loads in the suspension system cordage has thus far proven very...

Briefs: Mechanical & Fluid Systems
Systems, Methods, and Apparatus of a Low-Conductance Silicon Micro-Leak for Mass Spectrometer Inlet

Mass spectrometers on atmospheric entry probes require a method for introducing gas from high-pressure ambient regions to the vacuum of the mass spectrometer interior.

Briefs: Robotics, Automation & Control

NASA’s Langley Research Center has developed three techniques and systems to calibrate and validate...

Articles: Imaging

Thanks to a combination of high-quality optics and advanced digital imaging technology, today’s newest digital microscopes provide efficient solutions to a...