Award Data

ABSTRACT:To meet the Air Force's need for cyber defense and hardening of tactical IP networks, we propose developing Cyber Hardening and Agility Technologies for Tactical IP Networks (CHATTIN). CHATTIN will harden existing tactical networks by injecting an authentication mechanism, automatically detect and block attacks and reconnaissance attempts, and provide agile isolation of adversarial nodes. ...

ABSTRACT:Cognitive skills/capabilities are important for the military personnel to fulfill tasks and to ensure mission efficiency and success. In the past decade, there are abundant researches suggesting that non-invasive brain stimulation via transcranial direct current stimulation (tDCS) holds great promise to enhance a soldier's cognitive performances. Although models to predict the tDCS curren ...

ABSTRACT:Significant gains to engine performance are achievable through the development of advanced cooling designs in blade and vane airfoils in order to allow higher turbine inlet temperatures. Correspondingly, reductions in maintenance costs can be achieved through higher confidence evaluation criteria for such cooling designs. In this effort, scaling parameters used between experimental and en ...

ABSTRACT:Modulator linearity and efficiency, in addition to bandwidth, are important parameters in characterizing a modulator. In general, improving modulation efficiency is highly desirable since higher modulation efficiency allows lower RF signal to impose equivalent change in the optical beam whereas improved linearity increases the dynamic range available to analog signals conveyed and process ...

ABSTRACT:Hyperspectral imaging is a technique used to simultaneously capture spatial and spectral information of an object scene, making it a valuable technique for applications in remote sensing and military battlefield environments. In the case of long wave infrared (LWIR) imaging, a hyperspectral approach offers an opportunity to improve upon the detection capabilities of standard broadband sen ...

ABSTRACT:This proposal addresses the problem of geolocating moving targets (GMTI) from data sets collected as part of an imaging program such as synthetic aperture radar (SAR). A linear frequency modulation (LFM) waveform from a moving platform that contains both the transmitter and the receiver (monostatic case) is envisioned here. Combining Along-track Interferometry (ATI) and Space Time Adaptiv ...

ABSTRACT:Low Noise Amplifiers covering the 27.5-31.0 GHz and 43.5-47.0 GHz bands with ultra-low noise figures of less than 0.6 and 0.9 dB at the MMIC level, and 0.8 and 1.1 dB at the modules waveguide flange level, respectively, are proposed. This represents a reduction of nominally 0.5 to 1.0 dB over newly announced MMICs, and 1 to 2 dB reduction relative to commercial LNAs. WGS and AEHF satellit ...

ABSTRACT:The Ka-band SATCOM systems offer potential for transportable and mobile communications through the effective use of the wide bandwidths available while requiring that adequate linearity performance be maintained. In environments where size and power conservation is of high importance, power consumption and heat dissipation in the power amplifier (PA) must be minimized. However, it is wide ...

ABSTRACT:The objective of this proposal is to develop and demonstrate an innovative laser cavity design based on high efficiency diffractive optical elements (DOEs) to replace currently used external bulk laser optics. This innovation will improve the stability of Vertical External Cavity Surface Emitting Laser (VECSEL) systems as well as other types of solid state laser systems. The developed DOE ...

ABSTRACT:This proposal addresses the problem of ground moving target detection and geolocation using synthetic aperture radar (SAR) from a hypersonic air platform. Combining SAR, Along-track Interferometry (ATI) and Space Time Adaptive Processing (STAP) can often yield accurate target geolocations. In a high speed environment, the pulse repetition frequency(PRF) requirements for SAR and GMTI are d ...