Test & Measurement
Time-Domain Reflectometers
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Articles Aerospace
An Integrated Framework for Complex Radar System Design
Modern radar systems are complex and depend heavily on advanced signal processing algorithms to improve their detection performance. At the same time, the radio front-end must meet...
Articles Test & Measurement
Modelling and Simulation Tools for Systems Integration on Aircraft
The provision of integrated modeling, simulation and optimization tools to effectively support all stages of aircraft design remains a critical challenge in the aerospace...
Articles Test & Measurement
Pulse Analysis Techniques for Radar and Electronic Warfare
Pulsed signals are widespread in radar and other electronic warfare (EW) applications, and they must be accurately measured for manufacturing, design of countermeasures, and threat...
Briefs Sensors/Data Acquisition
Angular Random Walk Estimation of a Time-Domain Switching Micromachined Gyroscope
The primary metrics that prohibit the use of microelectromechanical systems (MEMS) gyroscopes for navigation-grade inertial navigation units (IMUs) are angle...
Briefs Test & Measurement
Measuring Impact Damage to Toughened CFRP Laminates with Time Domain Reflectometry
Laminated Carbon Fiber Reinforced Polymer (CFRP) composites are very effective in weight saving in aeronautical structural components. For these laminated CFRP...
Articles Test & Measurement
Testing Modern Radios
Several techniques are now being employed to ensure efficient communications across the chaotic radio spectrum. Chief among them is Software Defined Radio (SDR), which uses software to dynamically control communications...
Briefs Test & Measurement
Characterization of Ceramic Composite Materials Using Terahertz Nondestructive Evaluation Techniques
This work describes the use of nondestructive evaluation (NDE) techniques to characterize defects such as rust, voids, etc. in materials, and...
Articles RF & Microwave Electronics
An Advanced Circuit Protection Approach for RF Interfaces
One aspect that sets circuit protection for radio frequency (RF) apart from other types of applications is the range of frequencies in which RF circuits operate. With abbreviated clock...
Application Briefs Test & Measurement
Measuring Radar Cross Section with Handheld VNAs
Radar cross section (RCS) is the measure of an object's ability to reflect radar signals in the direction of the radar receiver, i.e. it is the measure of the ratio of backscatter per steradian...
Briefs Electronics & Computers
Analysis of Clustering Tools for Moving Target Indication
Current and future forces operating in urban environments need the capability to detect slow-moving personnel inside buildings. To accomplish this, a time-domain approach was developed that uses a low-frequency, ultra-wideband (UWB) radar with a transmit pulse capable of penetrating through...
Articles Photonics/Optics
Fiber Interferometry for Testing Military Avionics
Fiber-optic networks have benefited from nearly 20 years of continuous expansion (notwithstanding the brief, yet surprisingly quiet period from 2002 to 2005). For terrestrial networking, this...
Briefs Test & Measurement
Improvements in Measurement of Permeability and Permittivity
The two-transmission method is an improved method of determining, from microwave measurements, the complex permeability and complex permittivity of a sample of a material typified by...
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