Tech Portfolio

A hybrid rocket motor is manufactured by photopolymerizing the solid fuel grain in a stereolithography method, wherein fuel grains in a plastic matrix are deposited in layers for building a solid fuel rocket body in three dimensions for improved performance and for a compact design.

A device for separating uncoordinated co-channel signals including a symbol detector.

An isosurfacial three-dimensional imaging system and method uses scanning electron microscopy for surface imaging of an assumed opaque object providing a series of tilt images for generating a sinogram of the object and a voxel data set for generating a three-dimensional image of the object having exterior surfaces some of which may be obscured so as to provide exterior three-dimensional surfac

Various embodiments are directed to systems and methods of imaging subsurface features of objects. An illumination source may be directed towards a surface of an object comprising subsurface features at a first angle relative to the normal of the surface.

An adaptive reflector antenna includes an adaptive reflector and a mechanism for simultaneously effecting feed rotation and shape change for the adaptive reflector so as to maintain antenna performance with large scan angles while simultaneously reducing weight, complexity, and cost.

Systems and methods for increasing communications bandwidth using non-orthogonal polarizations are provided herein.

A signal detection apparatus includes electronics configured to receive an RF input and to process the RF input applying a decision rule that is a normalized quantity to determine if a man-made signal is present or if only noise is present while achieving a constant false alarm rate.

A tunable optical local oscillator is used for optical heterodyne signal detection using an electrooptic Mach-Zehnder modulator to produce a rapidly tunable optical signal from a tunable RF frequency generator.

The invention provides stable lithium niobate waveguides, and systems and methods for making same.

Computer-based systems and methods for determining attitude of a moveable object. Attitude is determined by a transformation matrix {right arrow over (U)} from a body coordinate frame of the moveable object to an inertial reference frame.

An onboard solar cell array current and voltage characteristic determination method is preferably used on small spacecraft and determines the solar cell orientation relative to the sun by a comparison between prelaunch solar cell characteristics with on-orbit solar cell characteristics well suited for spin axis determinations and monitoring the degradation of on-orbit solar cells over the opera

Embodiments of valve apparatuses are described.

The present invention relates to identification tagging, and is specifically directed to identification tagging of ammunition. An isotopic taggant is deposited in a layer at the interface between the primer and the propellant so that, as the ammunition is fired, the taggant is dispersed throughout the propellant.

Various embodiments are directed to systems and methods of imaging subsurface features of objects. An illumination source may be directed towards a surface of an object comprising subsurface features at a first angle relative to the normal of the surface.

Data aided carrier phase and symbol timing synchronizers are implemented at baseband as digital modulators isolating input signal inphase and quadrature component signals fed into inphase and quadrature Laurent transforms that function as data detector to provide odd and even data bit multiplexed output data signal while cross coupling the inphase and quadrature transformed outputs for removing

A communications receiver receives a received continuous phase modulation (CPM) signal having an original modulation index of h and includes a filter, a continuous phase reconstructor using phase unwrapping, and a modulation index scaler for generating a reconstructed CPM signal having a scaled modulation index H from the received CPM signal having a small modulation index h, with the scaled mo

A photographic digital data archival apparatus includes an article of media that includes a substrate and one or more layers of silver-emulsion based light-sensitive material, the article of media being configured to store digital data in the one or more layers and including a human-readable portion that provides instructions on reading and interpreting the digital data using basic imaging and

A microfluidic device includes a substrate including multiple electro-hydraulic valves and/or electro-hydraulic pumps that each include a flow channel and one or more hydraulic control channels, actuators for controlling the electro-hydraulic valves and/or electro-hydraulic pumps, and a hydraulic pressure source operatively connected to the hydraulic control channels.

Photostructurable glass and ceramic materials in slabs are processed into pixelized screens having opaque baffles therein for defining therebetween light pipes in the material through which pixel light is passed and directed with limited fields of view and for stereoscopic viewing, the screens being made using various manufacturing processes included focused UV light exposure and baking of the

Systems and methods for stabilizing laser frequency based on an isoclinic point of an atomic or molecular medium are provided herein.

An nth root transformation is used for generating near Gaussian metrics from non-Gaussian metrics for input into a conventional turbo decoder that is based on the assumption that the input sequence to the decoder has a Gaussian distribution.

An observation lock detector block receives I&Q correlations and generates error measurement vectors, each including phase, frequency, code, pseudorange, and covariance residual estimates, and generates validity indicator and confidence indicator vectors, one of which error measurement vectors is an output as a selected error measurement vector with a respective validity indicator and confi

Systems and methods for converting wideband signals in the optical domain are provided.

Polymer nanofibers, such as polyaniline nanofibers, with uniform diameters less than 500 nm can be made in bulk quantities through a facile aqueous and organic interfacial polymerization method at ambient conditions. The nanofibers have lengths varying from 500 nm to 10m and form interconnected networks in a thin film.