Published:  October 24, 2019

The feature article in this issue of our journal, “Effects of Material Properties on ISR for Synthetic Aperture Radar,” involves research that looks at the various factors that affect image appearance of a target in microwave and radar frequencies. To better understand how to implement unconventional countermeasures, it is important to understand the physical and material properties that affect target detection, recognition, and identification in intelligence, surveillance, and reconnaissance (ISR) missions.

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Effects of Materials Properties on ISR for Synthetic Aperture Radar

SUMMARY This research looks at the various factors that affect image appearance of a target in microwave and radar frequencies. To better understand how to implement unconventional countermeasures, it is important to understand the physical…

The Green Monopropellant: Developing and Flight Testing AF-M315E, a Hydrazine Replacement

INTRODUCTION Hydrazine has been the go-to propellant for spacecraft and satellites for more than half a century.  While effective and proven, its use comes with many hazards.  Researchers are currently developing and testing a new…

Change Detection in Satellite Imagery With Region Proposal Networks

SUMMARY  This article presents a deep learning approach called Proposal-based Efficient Adaptive Region Learning (PEARL) to change detection (CD) in satellite imagery based on region proposal networks. Region proposals are useful for selecting regions of…

Zero-Bias Broadband Ultraviolet Photoconductor Based on Ultrananocrystalline Diamond Nanowire Arrays

SUMMARY This article focuses on developing a broadband ultraviolet (UV) photodetector (PD) based on superflat, boron-doped ultrananocrystalline diamond (UNCD) nanowire (NW) arrays functionalized with platinum (Pt) nanoparticles and capable of withstanding high operating temperatures.  This PD…

High-Strength, Corrosion-Resistant Steel Over Titanium Alloy for Aircraft Critical Components

INTRODUCTION Aircraft landing gears, structures, and turbine components (“aircraft critical components”) are subjected to severe loading, corrosion, and adverse environmental conditions and have complex shapes varying from thin to thick sections. High-strength titanium alloys and…