Abstract:The Associative Model of Data offers a fundamentally different meta-model for data organization than the well-established relational data model. The associative model focuses on Items and Links among items rather than sets of records. We propose to compare and contrast the associative model with two… more
Abstract:Monitoring mercury contamination in groundwater, surface water, and other natural environments is challenging and expensive, and because samples have to be collected in the field and analyzed in a laboratory, there is a long delay before results are available. The expense of monitoring limits the… more
Abstract:In modern fusion concepts, inductive pickup loops are one of the primary magnetic diagnostics in tokamaks and small-scale concept exploration experiments. They are used in industries and laboratories that utilize and study low-temperature plasmas. Inductive pickup loops are capable of extremely… more
Abstract:Methods to reduce the turbulent viscous skin friction stand out as paramount to increasing the energy efficiency, and therefore the aerodynamic efficiency of supersonic aircraft. Eagle Harbor Technology (EHT) proposes to develop and optimize a MHD plasma injector, which will be used to efficiently… more
Abstract:The United States Navy is interested in developing small vessel mounted and man-portable directed energy weapons. One key technology in this endeavor is the development of high power radio frequency (HPRF) sources. While much work is being done to advance the state of the art in HPRF sources, the… more
Abstract:EOSPACE proposes developing a practical, very-wide-bandwidth electrical characterization technique based on advanced photonic signal processing. The characterization method only requires a high-speed mm-wave source and uses exclusively low-speed optical detection, eliminating the need for high-speed… more
Abstract:The objective is to develop a wideband, high-sensitivity, high RF power handling optical modulator suitable for use in low-noise microwave photonic links associated with military and commercial antenna applications. Specifically, the modulator will be designed to be highly-resistive to… more
Abstract:Inexpensive biofuels are essential to the national economic and environmental stability of the United States. Pathways are well established to ferment sugars derived from biomass into fuels and bioproducts. However, there is a massive gap between the physical form of raw cellulosic biomass and the… more
Abstract:ABSTRACT: The goal of the Space Test Program is to enable the US Air Force to rapidly develop emerging space technologies by providing economical flight opportunities to increase a technology"s TRL. Over the past decade, the CubeSat form factor has emerged as an economical platform for testing… more
Abstract:Leveraging TUI's SWIFT software defined radio (SDR) architecture, we propose to develop a 100 Mbps downlink and intersatellite crosslink capability with ranging and timing synchronization capabilities to enable more sophisticated CubeSat and small satellite missions. This effort will focus on… more
Abstract:With the increased demand for and utility of nano- and micro-satellites, the demand for responsive, low-cost access to space has also increased. To meet this demand, multiple private companies are pursuing the development of nano- and micro-launch vehicles (NMLV). However, NMLV builders lack… more
Abstract:TUI proposes to develop and demonstrate a process for fabricating high-performance composite truss structures on-orbit and integrating them with thin film solar cell assemblies to enable the deployment of very large solar arrays with lower cost and increased power-per-mass than SOA array… more
Abstract:To enable future robotic exploration systems to have greater mobility, sensing, sampling, and communication capabilities on difficult terrain such as craters, cliffs, gullies, and skylights, Tethers Unlimited proposes to develop a "Sensing and Positioning on Inclines and Deep Environments with… more
Abstract:ABSTRACT: The Phase I Versatile Structural Radiation Shielding (VSRS) Effort has successfully demonstrated the feasibility of 3D printing multifunctional spacecraft structures with integral multi-layer, multi-material, minimum-mass radiation shielding. We developed novel space-compatible materials… more
Abstract:Today"s high energy Q-switched Nd:YAG lasers are often pumped by stacks of multiple edge-emitting diode laser bars since the vertical-cavity surface-emitting laser (VCSEL) traditionally have been lower in efficiency. In this effort we are proposing a novel VCSEL design which overcomes the… more
Abstract:nLIGHT proposes a two dimensional Wavelength Stabilized Vertical External Cavity Surface Emitting Lasers (WS-VECSEL) as a pump source for Rb vapor alkali laser used in directed energy weapons. The integration of a narrow-band reflector (i.e. a volume holographic grating) into the external cavity… more
Abstract:nLight proposes the development of high efficiency, high average power 1550-nm laser transmitter system that is based on Er-doped fiber amplifier resonantly pumped by high efficiency 1532-nm fiber-coupled diode laser pumps. To meet the efficiency requirement for space communication, nLight proposes… more
Abstract:nLIGHT proposes the development of a multiple spectral band laser head that is based on a vertically stacked array of single emitter laser diodes. A key design aspect of this device is that the proposed laser head is largely based on a multi-emitter pump module that is currently under commercial… more
Abstract:ABSTRACT: The efficient coherent beam combination of a master oscillator power amplifier (MOPA) system requires a reduction in non-linearities of the power amplifier sections. Fiber non-linearities, such as stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS), provide an… more
Abstract:ABSTRACT: nLIGHT proposes the development of of an all-fiber, master oscillator power amplifier (MOPA) configuration that will meet the Air Force requirements for a 10 mJ, 300 ns pulsed laser source. With the exception of the output power amplifier fiber, this device will be based on commercial… more
Abstract:Based on the promising results obtained under Navy Phase I SBIR funding, nLight proposes a Phase II continuation toward the development of fiber-coupled high power and high efficiency diode laser pumps around 975 nm that operate at high ambient temperatures. Under the Phase I SBIR base program,… more
Abstract:ABSTRACT: The objective of this proposal is to achieve an operational capability to produce daily forecasts of the extended extreme ultraviolet solar spectral irradiance (XUV/EUV/FUV SSI, hereafter EUV SSI) by delivering quantitative expectations of the EUV SSI at high-spectral resolution for every… more
Abstract:UHF radars at high latitude observe significant perturbations in measurements of amplitude, phase, range, and Doppler, caused by ionospheric disturbances. Without mitigation of these effects, there is no doubt that the natural ionosphere is a major issue in the performance of the important radar… more
Abstract:Many activities and technological systems prevalent in today’s society – air traffic control and air travel, the power grids, communications, deep-water drilling operations, human spaceflight – are vulnerable to the effects of sudden flares from our Sun. Because the propagation speed for… more
Abstract:ABSTRACT: Coordinate Registration (CR) of OTHR targets requires accurate real-time ionospheric modeling coupled with HF propagation calculations to convert radar-measured target signal delays and beam steers to geographical position. Our team is the developer of one of the most sophisticated… more
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