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THE RADARS EMBEDDED IN VERY LOW OBSERABLE PLATFORMS MUST NOT COMPROMISE "STEALTHINESS" BY THE RADAR CROSS-SECTION (RCS) OF THEIR ANTENNAS. SUCH ANTENNAS CAN BE COVERED WITH A METALLIC RADOME THAT MINIMIZES THE RCS TO OUT-OF-BAND THREAT RADAR SIGNALS. BUT IT CANNOT SIMILARLY SUPPRESS INBAND SIGNALS. SUCH SIGNALS WILL PASS THROUGH THE RADOME AND BE SUBJECTED TO SCATTER BY THE ANTENNA BEHIND IT. THIS ...

ADVANCED STRUCTURAL MATERIALS USED IN THE FABRICATION OF SUBMARINES CAN SUSTAIN LARGE STRAINS DURING THE FORMATION PROCESS CAUSED BY EXPLOSIVE LOADINGS. THE COMPUTATIONAL SOLID MECHANICS COMMUNITY HAS RECENTRLY RECOGNIZED SERIOUS SHORTCOMINGS IN CALCULATIONS USING MATERIAL MODELS IN THIS LARGE STRAIN REGION. BECAUSE OF THE IMPORTANCE OF CALCULATIONS IN UNDERSTANDING THE SHOCK RESPONSE OF SUBMARINE ...

Development of a low-cost, near term approach to flight testing a hypersonic, storable fuel, scramjet engine using ballistic range technology is proposed. Flight-testing is easily the most expensive component of the triad of computational fluid dynamics (CFD), ground-testing and flight-testing needed to develop and demonstrate sustained and accelerating airbreathing flight at hypersonic speeds. ...

There is a critical need for an all weather capability to detect and classify military targets concealed in foliage and/or camouflage. Recent advances in high resolutions synthetic aperture radar (SAR) technology, operating at low frequencies (VHF-UHF), have demonstrated significant capability for detection and classification of such targets. However, one of the primary difficulties is the signi ...

A novel architecture employing optimized space-time-frequency processing to meet the seemingly disparate requirements imposed by FOPEN SAR and MTI is presented. Two primary techniques are discussed: (a) simultaneous, long-dwell multibeam receive processing and (b) wideband, udorandomly hopped frequency employ multiple, wideband antenna elements each wi ...

Applied Science Innovations, Inc. in collaboration with Lockheed Martin Corporation proposes development of the Super-resolved Volumetric Imagery from Video Aerial Surveillance (SVIVAS) – a novel set of image processing algorithms to produce, with modern wide area video sensors, highly accurate 3D models of the area under surveillance, with voxel sizes one-half of the sensor fundamental ground s ...

The primary objective of this effort is to research and develop advanced algorithms suitable for spectral signature extraction and spectral matching to improve full motion video (FMV) multi-target track longevity and purity. Black River Systems Company proposes a systems level approach to improving and evaluating performance using hyperspectral feature-aided association to achieve greater track li ...