Award Data

ABSTRACT: An ability to reduce the weight of cables has the potential to provide significant cost savings, reduce maintenance and improve reliability of satellites. The costs of developing and producing satellites are linearly proportional with the satellite"s weight, with each kilogram costing around $1 million when delivery-to-space costs are included. With global satellite launches expected to ...

The objective of this proposal is to develop Selective Availability Anti-Spoofing Module (SAASM) compliant GPS receiver for Geosynchronous Earth Orbit (GEO) applications. In this proposal, we explore an approach to design the GEO GPS SAASM receiver based on improved techniques for signal acquisition (or detection) and then signal tracking (and demodulation) of weak GPS signals. GPS signals availa ...

AlN is an attractive material for power electronics device applications due to its wide bandgap and resulting high electric breakdown field. One of the major challenges that need to be addressed to achieve full utilization of AlN for power electronics applications is the development of a doping strategy for both donors and acceptors. Ion implantation is a particularly attractive approach since it ...

Electric vehicles, including hybrids in the nearer term, are the principal transportation technology by which the United States can become independent of foreign oil, can become energy independent overall, and can effect control over greenhouse emissions. For this to become reality, electric vehicle costs need to come down and performance needs to improve. For electric vehicle motors, the goals ...

ScienceTomorrow in collaboration with Dr. David C Joy, at the University of Tennessee Research is proposed to fabricate direct digital Quantitative Secondary Electron Detectors (QSED) for scanning electron microscopes (SEMs). If successful, commercial versions of the QSED would transform the SEM/STEM into a quantitative, metrological tool with enhanced capabilities that, in turn, would broaden re ...

The negative-electron-affinity (NEA) photocathodes which produce polarized electrons are a vital component of electron accelerators such as that at DoE Jefferson Lab and the Stanford Linear Accelerator Center (SLAC). Future systems, such as the International Linear Collider (ILC), will require a polarized electron beam intensity at least 20 times greater than produced by strained GaAs, which is us ...

ABSTRACT: SIFT, with subject matter expertise from the UAS pilots and sensor operators (SOs) at UAV Associates and in sensor processing capabilities from Ball Aerospace, will develop FLA2SH (Flexible Levels of Adaptable Autonomy for Sensor Handling) to extend and integrate with AFRL"s successful Flexible Levels of Execution-Interface Technologies (FLEX-IT) architecture for multi-modal delegation ...

ABSTRACT: The ability to access high-quality training anywhere and anytime continues to grow in importance due to the complex nature of operational team environments. Training simulations that use virtual agents that respond and behave like live teammates enhance training and help achieve the train as you fight objective without requiring a complete team of human participants. However, the domain ...

ABSTRACT: Due to scarcity of spectrum, Dynamic Spectrum Access (DSA) becomes a needed technology to improve the utilization of electromagnetic spectrum for DoD satellite communication. However, current DSA approaches are developed for terrestrial communications without addressing the unique challenges for SATCOM environments such as error-prone spectrum sensing, high mobility, and large coverage. ...

ABSTRACT: Coordinating and sharing information across multi-level security (MLS) networks are of great interest in many military applications. However, it is very challenging to accomplish those goals due to the heterogeneous security classifications of different network domains. The recent proposed cross-domain solutions (CDS) provide initial steps to make such applications possible. However, th ...