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SDR Interface for the NeXtRAD Multistatic Radar System

Aerospace & Defense Technology: December 2019

  • Magazine Article
  • 19AERP12_06
Published 2019-12-01 by SAE International in United States

NeXtRAD is a dual-band, dual-polarization, multistatic radar system under development at the University of Cape Town (UCT) in col lab oration with University College London (UCL). The primary mission of the system is to collect multistatic data of small radar cross-section maritime targets embedded in sea clutter.

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WiFi-Based Technique Measures Speed and Distance of Indoor Movement

  • Magazine Article
  • TBMG-35610
Published 2019-12-01 by Tech Briefs Media Group in United States

A technique was developed that uses a combination of WiFi signals and accelerometer technology to track devices in near-real-time. The WiFi-assisted Inertial Odometry (WIO) technique uses WiFi as a velocity sensor to accurately track how far something has moved — similar to sonar but using radio waves instead of sound waves.

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Aerospace & Defense Technology: December 2019

  • Magazine Issue
  • 19AERP12
Published 2019-12-01 by SAE International in United States
Engineered Solutions for Enclosure Sealing and InsulationTips for Reducing Error When Using Eddy Current Measuring TechniquesReducing the High Cost of TitaniumStreamlining Post-Processing in Additive ManufacturingSoftware-Defined Analog Filters: A Paradigm Shift in Radio Filter Performance and CapabilitySDR Interface for the NeXtRAD Multistatic Radar SystemElectrodeposition of Metal Matrix Composites and Materials Characterization for Thin-Film Solar Cells Metal matrix composites, which consist of silver-multiwalled carbon nanotube-silver, layer-by-layer stacks, can electrically bridge the cracks (>40 μm) that appear in semiconductor substrates and the composite grid lines.Sensing Applied Load and Damage Effects in Composites with Nondestructive Techniques Comparing and correlating piezoelectrically induced guided waves, acoustic emission, thermography, and X-ray imaging to determine the effects of applied load on a composite structure.Technology Impact Forecasting for Multi-Functional Composites Multi-functional composites offer a possible solution to the conflicting design goals of making new aircraft lighter, stronger, faster, and more environmentally sustainable.Molecular Engineering for Mechanically Resilient and Stretchable Electronic Polymers and Composites Establishing the design criteria for elasticity and ductility in conjugated polymers and composites by analysis of the structural determinants of the mechanical…

Software-Defined Analog Filters: A Paradigm Shift in Radio Filter Performance and Capability

  • Magazine Article
  • TBMG-35665
Published 2019-12-01 by Tech Briefs Media Group in United States

Among the most abundant components in all wireless system designs, analog RF filters are used to block interference from various internal and external sources. Limited spectrum divided among an ever-increasing number of users is further driving the need for these ubiquitous but in some ways anachronistic devices. Currently, interference is quite common among cellular base stations, satellite systems, radar installations, and other types of access and backhaul communications systems. Traditional filters are unable to cope with the requirements; in many cases, most often due to insufficient guard bandf. For example, in some international locales, LTE base stations and satellite receivers share the L-band frequencies. At around 3.5 GHz, 5G operators, CBRS radios, and military radars are trying to co-exist. To address this in-band interference, a new, tunable filtering technology is entering the marketplace, uniquely blending the best of both analog and digital technologies.

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Software-Defined Analog Filters: A Paradigm Shift in Radio Filter Performance and Capability

Aerospace & Defense Technology: December 2019

  • Magazine Article
  • 19AERP12_05
Published 2019-12-01 by SAE International in United States

Among the most abundant components in all wireless system designs, analog RF filters are used to block interference from various internal and external sources. Limited spectrum divided among an ever-increasing number of users is further driving the need for these ubiquitous but in some ways anachronistic devices. Currently, interference is quite common among cellular base stations, satellite systems, radar installations, and other types of access and backhaul communications systems. Traditional filters are unable to cope with the requirements; in many cases, most often due to insufficient guard bandf. For example, in some international locales, LTE base stations and satellite receivers share the L-band frequencies. At around 3.5 GHz, 5G operators, CBRS radios, and military radars are trying to co-exist. To address this in-band interference, a new, tunable filtering technology is entering the marketplace, uniquely blending the best of both analog and digital technologies.

Annotation ability available

Avoiding Electrical Damage with Conductive Lubrication

  • Magazine Article
  • TBMG-35293
Published 2019-10-01 by Tech Briefs Media Group in United States

At present, 12 volts are required to provide automotive electronic systems — which include vehicle lights, air conditioning, and radio — with sufficient electrical power. With each passing year, new cars get more complicated and high-tech. Additional features such as stop-start motors, hybrid motors, and turbochargers will allow for better fuel economy but will also demand more battery power.

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WHAT'S ONLINE

Automotive Engineering: October 2019

  • Magazine Article
  • 19AUTP10_15
Published 2019-10-01 by SAE International in United States

Personal-mobility electric scooters have appeared seemingly everywhere-and are dumped just about anywhere when their riders are finished with the journey. The situation has become an at-times comical allegory for some of the unintended consequences new-age mobility may bring, and in this episode of Eye on Engineering, Editor-in-Chief Lindsay Brooke looks at electric-scooter clutter-and who is-or should be-responsible for the cleanup.

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Self-Configurable Radio Receiver System and Method

  • Magazine Article
  • TBMG-35135
Published 2019-09-01 by Tech Briefs Media Group in United States

A self-configurable radio receiver system was developed for relaying communication signals from multiple deep space assets. Most conventional radio receivers are hardwired to receive a specific type of signal and are incapable of receiving other types of signals without preconfiguration according to a predetermined schedule. The new radio receiver can recognize multiple signal types and autonomously reconfigure itself to decode the particular type of signal that is received.

Magnetic Metamaterial Amplifies MRI

  • Magazine Article
  • TBMG-35120
Published 2019-09-01 by Tech Briefs Media Group in United States

Magnetic resonance imaging (MRI) uses magnetic fields and radio waves to create images of organs and tissues in the human body, helping doctors diagnose potential problems or diseases. Doctors use MRI to identify abnormalities or diseases in vital organs as well as many other types of body tissue, including the spinal cord and joints.

How Miniaturized Distributed Modular Architecture Advances Avionics Design

  • Magazine Article
  • TBMG-34865
Published 2019-08-01 by Tech Briefs Media Group in United States

Most of today’s collision-avoidance, in-flight-entertainment (IFE), air-to-ground-communications, and other avionics systems employ electronics packaging based on the Aeronautics Radio INC (ARINC) 600 standard. Compared to the older ARINC 404 standard dating from the 1970s that defined “black box” enclosures and racks within aircraft, ARINC 600 specified a Modular Concept Unit (MCU) – the basic building block module for avionics. An ARINC 600 metal enclosure can hold up to 12 MCUs, allowing a lot of computing power to be placed in a centralized “box.” By making it possible to run numerous applications over a real-time network, ARINC 600 enabled “next generation” integrated modular avionics (IMA).