Award Data

The predominant method used in electronic support measure (ESM) systems to detect and geolocate noncooperative RF emitters employs arrays of antennas to estimate signal angle of arrival (AOA). There are several issues that preclude wide installation and use of these for emitter geolocation. One issue is accuracy. There are various error sources, including signal noise, multipath effects, and ambig ...

Vescent Photonics proposes to develop a compact laser system and integrate it with a cold-atom micro primary standard developed under the DARPA IMPACT program. In phase I we will investigate performance enhancements resulting from immobilizing the cold-atom sample with an optical lattice formed from an optical field whose wavelength is chosen to minimize the differential light shifts between the s ...

The Navy"s mission success increasingly relies on complex decision support systems and automation. Navy command and control systems must provide the users with the right information, at the right time, depending on the context in which they are operating, and must do it in a proactive manner. Today, massive quantities of data are passed blindly between nodes, with no ability to adapt the delivery ...

Continuous physiological monitoring can provide invaluable insight into the status of the person monitored. The right sensors can provide important information related to both the physical and mental state of the subject. Although sensing modalities and the information that can be gleaned from them is a fairly well advanced science, the sensors themselves lag behind in terms of being sufficiently ...

Composite materials are widely used in aircraft to reduce weight and cost, improve structural performance, and boost fuel efficiency. However, composites are susceptible to adhesive bond quality issues, including kissing bonds which may occur because of initial fabrication or service related issues. Detection of such weakened bonds requires an easily used detection approach to routinely monitor co ...

This STTR Phase II Proposal addresses the need for a low cost acoustic transmitter that combines a power amplifier, control-circuitry and an innovative transducer assembly, all at a low cost. Our approach is to use a cylindrical modal vector projector transducer which becomes part of the housing and, moreover, uses only a minimum of power to provide a sizable source level. The modal vector project ...

Submarine commanders must make complex decisions to accomplish increasingly diverse missions. Moreover, concurrent missions may involve contradictory requirements. Planning must also account for the unexpected, including equipment failures, environmental factors, or external events that impact the ship's mission(s). Since all submarine operations involve a degree of risk, the commander must b ...

This STTR aims to develop a novel method for detecting and tracking growth of cracks in rotorcraft gearbox. Aerospace structures are subject to dynamic loading. In particular, gearbox components experience continuous cyclic loading, wear and eventually develop fatigue cracks. As opposed to most other aircraft components, gearbox components are non-redundant, so a failure can have catastrophic cons ...

Autonomous systems continue to be outfitted with larger amounts of sensors that are capable of collecting extremely large amounts of data over the course of a mission. Even autonomous systems with high storage capacities can run into storage limitations when burdened with large amounts of sensor data over long mission durations. This proposal will develop a Learning-based Approach for Relevant Dat ...

This research seeks to develop a method of developing solid-state power amplifiers that operate at 300 Volts, achieve 100 Watt output and greater than 90% efficiency at 1 GHz with 10% bandwidths. We will seek to demonstrate switch-mode amplifiers that use a novel gate design with Gallium Nitride forming the basis for solid state power amplification.