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Briefs

Electronics & Computers

Heterogeneous System-on-a-Chip for Self-Powered Wireless Sensor Networks

A new dimension of system architecture design is emerging where hundreds to thousands of ultralight (

Briefs

Mechanical & Fluid Systems

Sensing for Controls and Propulsion Health Management in Turbine Engines

Advances in engine performance and reliability require sensor components that operate reliably under extreme engine operating conditions (e.g., takeoff, max thrust) and in...

Briefs

Sensors/Data Acquisition

Tightly Coupled INS, GPS, and Imaging Sensors for Precision Geolocation

To address the issue of poor georegistration performance for small unmanned aerial vehicles (UAVs), navigation and target-location accuracy improvements achievable by tightly integrating an image-based feature-tracking algorithm with Global Positioning System (GPS) and a...

Briefs

Manufacturing & Prototyping

Fabricating Biologically Inspired Artificial Haircell Sensors

As electronics packaging and equipment have decreased in size and weight, so have the potential dimensions of unmanned aircraft. Specifically, a classification of micro air vehicles...

Briefs

Electronics & Computers

Polypeptide-Based Molecular Electronics

Polypeptide supramolecules that will self assemble from solution and will form molecular wires that exploit quantum mechanical transport mechanisms can enable the formation of molecular devices such as...

Briefs

Photonics/Optics

Photon-Counting Chirped Amplitude Modulation Ladar

This work is a follow-on to an effort to develop a method using Geiger-mode avalanche photodiode (GM-APD) photon-counting detectors in the U.S. Army Research Laboratory’s chirped amplitude...

Briefs

Physical Sciences

Measurement of Transient Heat Flux and Surface Temperature Using Embedded Temperature Sensors

A report describes approximate solutions for surface temperature and heat flux for two embedded temperature sensors. The solutions were verified and the range of validity was established using several methods including comparisons with an exact analytical...

Briefs

Software

Considerations of Aeroacoustics in Turbojet-Engine Testing

A study of the aeroacoustics of a turbojet-engine test cell has been performed as one step in the development of a computational aeroacoustics capability (CAA) that could provide...

Briefs

Physical Sciences

Imaging and Spectral Measurements of Explosions

A document describes experiments performed to investigate rates of delivery of energy onto targets from different explosive formulations. The experiments were designed to measure relative positions of blast fireballs and leading shock fronts; determine whether different explosive formulations exhibit...

Articles

Aerospace

Active Thermal Management for Cooler Body Armor

The military places greater demands on its equipment — electronic and otherwise — than any other market segment. It is also true that it places its greatest thermal demands on the men and...

Articles

RF & Microwave Electronics

Wireless Sensor Network with Geolocation

Maintaining situational/positional awareness in indoor and urban environments is difficult because buildings, walls, and other obstacles obstruct vision and RF propagation. Propagation channels are...

Articles

Aerospace

2D Laser Profiling Scanner for Detecting Targets

The Radiometric Sensor Development and Applications Team of the Sensors and Electron Devices Directorate (SEDD) at the U.S. Army Research Laboratory (ARL) has developed a 2D laser profiling...

Application Briefs

RF & Microwave Electronics

New All-Digital RF Technology Simplifies the Radio Environment

The concept of a software or “cognitive” radio has been around for about 20 years, and has progressed to the point where open-source software code is available. A cognitive radio is “smart” in the sense that it is continuously aware of changes in radio frequency (RF) spectrum...