Award Data

The objective of this proposal is to design and develop multimode dielectric resonator antennas (DRAs) operating in a wide frequency band from 30 MHz to 2 GHz covering VHF/UHF Line-of-site (LOS) communications, UHF Satellite communications, and L band including GPS frequencies. The DRA elements have many advantages such as wideband nature, small size, and high power capability as compared with mic ...

This effort to improve the capabilities of the ESM system will increase the reliability and reduce lifecycle support costs of the Radar Wideband (RWB) subsystem on submarines. Analog to digital converter (A/D) based digital receivers will be applied to yield improvements in Radar signal acquisition and processing. In-phase and Quadrature (I/Q) data streams will be created from which intra pulse mo ...

Currently the air beam/arc shelters have no protection from mortar fragmentation or other indirect fire. In many cases, customary methods of ballistic protection such as sandbag walls and/or concrete barriers may require more logistical support than is available leaving the military personal vulnerable to enemy attack. The U.S. Army has evaluated the use of off-the-shelf armor materials and found ...

The goal of this Phase I proposal is to develop a synthetic, low cost, and benign simulant for biowarfare agents (BWA) to be used in the testing of standoff sensors. Orono Spectral Solutions Inc. (OSS) has performed preliminary work leading to the identification of benign ingredients that, when combined in a predefined mass ratio, mimic UV-Vis and infrared signatures of BG spores. This work was pe ...

The overall goal of this Phase I project is to demonstrate the feasibility of an infrared transparent, micro-fluidic sampling system that will lead to a field-deployable detection system capable of detecting low ppb levels of chemical warfare (CW) agents in water. To accomplish this goal, the proposed detection system will combine high surface area, organically modified mesoporous oxide absorptiv ...

Early detection of positive mild traumatic brain injury (mTBI) status is difficult in the post-trauma period and efficient, noninvasive screening methods are needed. Brain injury from trauma and other neurological conditions frequently escapes detection using current imaging technology such as magnetic resonance (MRI) and computer-assisted tomography (CAT). mTBI is associated with cognitive impa ...

Key obstacles to extending OFDM to wireless links and networks at high-frequencies and dynamic channels are inherent low performance to Doppler and power amplifiers operation with high back-off. Other significant obstacles are multipath and impulsive noise. PEARL-OFDM combines a layered architecture with technologies that mitigate such obstacles and enable full-range rates that maximizes connectiv ...

Multi-channel array manifolds are required for wideband AESA applications. In modern solid-state AESA arrays, MMIC-based T/R modules generally utilize digitally-controlled phased shifters to steer the beam on transmit and receive. The given phase value is only accurate at one frequency, and so for wide bandwidths of several hundred MHz (at X-band for example), the beam does not get formed properly ...

In order to improve the safety and efficiency of navy high speed small boat operations, FarSounder proposes a 3-dimensional, forward looking sonar solution capable of simultaneous bathymetry sensing and obstacle detection out to ranges of at least 1640 ft (500m). Additionally, the system will be cable of 50 knot operation and suitable for installation on a high speed planing vessel such as common ...

The objective of this proposal is to design and develop compact, efficient, electrically small, broadband antennas that are capable of handling high voltages of greater than 100 kV, and fit into small geometrical spaces of less than 40 mm in diameter and 50 mm in length. Previously insurmountable challenges to achieving the stringent requirements of simultaneous compact size, wider bandwidths, an ...