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Army Scientists Discover Power in Urine

Scientists at the U.S. Army Research Laboratory observed an unexpected result when combining urine with a newly engineered nano-powder based on aluminum. It instantly releases hydrogen from the urine at a much higher rate than with ordinary water.

Posted in: News, Defense, Alternative Fuels, Energy
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Putting Smart Weapons to The Test

In the old days, a slingshot, BB gun, rifle or cannon was only as smart as the marksman taking aim. Now, many weapons are guided to their targets with the precision of infrared sensors and lasers. The technology continues to advance, but testing technology has lagged behind, leaving new generations of weapons and their tactical advantages unavailable to today's troops.

Posted in: News, Defense, Detectors, Sensors, Test & Measurement
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Sensitivity Simulation of Compressed Sensing Based Electronic Warfare Receiver Using Orthogonal Matching Pursuit Algorithm

Electronic Intelligence Receiver (ELINT) is an important component in electronic warfare (EW) and layer sensing. The information it provides by constant surveillance can be used to detect, track and classify signals across the electromagnetic spectrum. The proper identification and reaction to the threat can avoid disaster and assure spectrum dominance for Air Force systems.

Posted in: Briefs, Aerospace, Electronics & Computers
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The Impact of Video Compression on Remote Cardiac Pulse Measurement Using Imaging Photoplethysmography

Remote measurement of physiological signals has a number of advantages over traditional contact methods. It allows the measurement of vital signals unobtrusively and concomitantly. In recent years, a number of approaches for imaging-based measurement of physiology using digital cameras have been proposed. Imaging photoplethysmography (iPPG) captures variations in light reflected from the body due to blood volume changes in microvascular tissue. It has been demonstrated that sub-pixel variations in color channel measurements from a digital single lens reflex (DSLR) camera, when aggregated, could be used to recover the blood volume pulse. Subsequently, it was shown that iPPG methods can allow accurate measurement of heart rate, heart rate variability, breathing rate, blood oxygenation and pulse transit time.

Posted in: Briefs, Aerospace, Test & Measurement
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Scaling LiDAR Optical Payloads from Drones to Miniature UAVs

The recent surge in demand for adaptive cruise control (ACC) and commercial autonomous vehicles has drawn a lot of attention to these innovative applications. Based on pulsed laser diodes and hybrid receivers with Avalanche Photodiodes (APDs) for laser range finding (LRF), these systems are often classified under the general acronym LiDAR (Light Detection and Ranging).

Posted in: Articles, Aerospace
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Subjective Mapping of Dust-Emission Sources by Using MODIS Imagery

Dust storms (5 to 100 km across) often originate from multiple dust-emission sources (1 to 10 km across). Remote-sensing-based dust-source identification is a challenge. A previous study developed a subjective approach for mapping dust sources by using enhanced MODIS satellite imagery; therefore, this study conducted mapping exercises to assess the reproducibility of this technique amongst multiple analysts and in different regions.

Posted in: Briefs, Aerospace, Test & Measurement
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Quality and Validation of Digital Designs for Aerospace and Defense

As aerospace and defense manufacturing becomes increasingly digitized—from the earliest design stages to the factory floor and beyond—data accuracy is fundamental to realizing the speed, quality and repeatability promised by interconnected and automated computer systems and manufacturing machines.

Posted in: Articles, Aerospace
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Ruggedized Computer Rack Cases

Verotec Inc
Manchester, NH
603-821-9921
www.verotec.us

Verotec has been selected by Lockheed Martin to provide custom 19” 6U 600 mm deep rack cases to house part of the ISTAR system in the AJAX next generation armored fighting vehicles developed for the UK Army.

Posted in: Application Briefs, Defense
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Custom Data Logger for Real-Time Remote Field Data Collections

The U.S. Army Corps of Engineers (USACE), CHL, FRF, had a need for a remote real-time data collection system to control instruments and log and communicate data from five observing stations in the Currituck Sound Estuary, NC1. These stations, referred to as the Currituck Sound Array (CSA), collect a suite of meteorological and oceano-graphic data including wind, air temperature, humidity, incoming solar radiation (above and below water), waves, currents, water level, salinity, and water temperature, as well as turbidity and many other water quality parameters. This array of instruments has a variety of control commands, sample routines, and output data formats. Additionally, the CSA was designed to act as a natural laboratory for estuarine research and as an instrument and model test bed. These capabilities required a reliable and flexible system that would allow easy modification of sampling schemes, the ability to log as many as 15 instruments with a single logger, and allow the incorporation of additional and novel instrumentation with minimal effort and expense.

Posted in: Briefs, Aerospace, Test & Measurement
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Initial Validation of Ballistic Shock Accelerometers

Method 522.2 of MIL-STD-810G CN1 defines ballistic shock as “a high-level shock that generally results from the impact of projectiles or ordnance on armored combat vehicles”. Typical engagements of interest also include Kinetic Energy projectiles, land mines, and improvised explosive devices. For the purposes of this TOP, ballistic shock is generally referred to as the sudden high-rate loading resulting from under body blast (UBB) testing designed to assess the crew-survivability of military vehicles. Historical testing conducted in both areas have proven the relative similarities between the two environments.

Posted in: Briefs, Aerospace, Sensors
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