Abstract: The invention discloses devices and methods of manufacturing devices for the splitting and amplification of light signals by use of an end-pumped waveguide optical device, based on either (a) self-imaging multiplexing of the signal and pump light, then amplification of the signal, then simultaneous self-imaging splitting of the signal and demultiplexing of the signal and pump, then separation of the signal outputs via nonamplifying S-bends; or (b) self-imaging multiplexing of the signal and pump light, then amplification of the signal, then splitting of both signal and pump, then separation of the outputs via amplifying S-bends, and then finally self-imaging demultiplexing of the signal and pump light in each output.

Abstract: A high-gain, dielectric loaded, slotted waveguide antenna having a photonic bandgap, a high-impedance electromagnetic structure, in contact with the waveguide surface containing longitudinal slots, and a tailored dielectric material structure in contact with the outer surface of the photonic bandgap structure. The tailored dielectric structure at the inner most surface has the same effective dielectric constant of the waveguide material and the photonic bandgap structure. The effective dielectric constant is then incrementally or continuously reduced to have a dielectric constant close to that of the free-space value at the outer surface further distance from the waveguide array. The tailoring of the effective dielectric constant is achieved by layering a given number of slabs of different dielectric constants with sequentially reduced values, or by varying the chemical composition of the material, or by varying the density of the material imbedded with high dielectric constant particles.

Abstract: A lead acid battery life extender for the battery of an internal combustion engine includes a multivibrator circuit electrically connected across the terminals of the battery for delivering high frequency electrical pulses to the battery, thereby removing lead sulfate from the plates of the battery and increasing the life of the battery, and a thermoelectric power source for providing electrical energy to the multivibrator circuit, thermally coupled to heat emitted from the internal combustion engine and electrically connected to the multivibrator circuit.

Abstract: A radar system has a transceiver and a ferroelectric phased array antenna. The antenna includes a plurality of radiating elements each connected to a ferroelectric phase shifter. The transceiver and the phase shifters are coupled for conveyance of radio frequency signals therebetween. A beam control computer calculates phase shifter control voltages which are applied to a beam correction computer. A temperature sensor is coupled to each phase shifter to provide feedback temperature values to the beam correction computer. A data table in the beam correction computer provides phase shifter correction voltages as a function of control voltage amplitudes and temperature values. The beam correction computer uses the data table in determining temperature corrected phase shifter control voltages which are applied to the associated phase shifters.

Abstract: An ultra-miniature, monolithic, mechanical safety and arming (S&A) device for projected munitions operates in accordance with a double interlock feature. Acceleration of the projected munition moves a delay slider into a final position, causing an arming slider and a safety interlock slider (in a first embodiment) or a command slider (in a second embodiment) to become partially disengaged. In the first embodiment, a command received by the safety interlock slider then moves it out of the way of the arming slider, thereby permitting the arming slider to move into its armed position. In the second embodiment, a command received by the command slider then moves it out of the way of the arming slider, thereby permitting the arming slider, under spring force, to move into its armed position.

Abstract: A fold-out fin has a fin geometry defined by two cross-sectional cuts through the cylindrical projectile body, both cuts being parallel to the boattail surface. This geometry insures that the stowed fin assembly fits within the gun tube. This geometry also exhibits low drag and good aerodynamic behavior. Upon launch, the fins are deployed and then locked in the fully open position with a spring loaded pin.

Abstract: A Microbolometer constructed of Biological and Non-Biological components, ing proteins with greater sensitivity to imaging, as the infrared radiation detectors.

Abstract: A light scattering Mueller matrix for an irregular particle placed on a plane interface is derived using the process of the present invention. The relationships discovered in this derivation are unique because they are independent of the particle shape, and only depend on the substrate refractive index (which is known), the wavelength and angle of incidence of the incident light (also known), and the approximate size of the scatterer (unknown). All that is required to estimate the size of the contaminant is to vary the scatterer size parameter until the model calculations of the light scattering Mueller matrix elements match the experimentally measured light scattering Mueller matrix elements. The probe of the present invention may be used as follows. First, the polarization state of the scattered light can be determined by measuring the Mueller matrix or Jones elements. Next, a "best fit" is made between these elements and the model.

Abstract: A method for forming a field emission flat panel display includes deposit a conductive patterned layer on a substrate, depositing an emitter material over the patterned layer, patterning the emitter material to provide a series of mask caps, etching the emitter material to provide arrays of emitter peaks with the mask caps thereon, depositing a dielective layer on the patterned layer and on the mask caps, depositing a conductive gate layer on the dielectric layer, depositing a high-resistivity dielectric layer on the gate layer, depositing a low-resistivity dielectric layer on the high-resistivity dielectric layer, and etching away portions of the dielectric layer, gate layer, high-resistivity dielectric layer and low-resistivity dielectric layer to expose the mask caps, and removing the mask caps to expose the emitter peaks to provide an emitter cathode panel, providing a transparent panel having a conductive coating thereon, and depositing a layer of thin film phosphors on the conductive coating to provide

Abstract: A method for determining the trajectory of a projectile on a ballistic trajectory includes creating a sequence of images of the projectile using a passive image sensor located at an observer; determining the time the projectile started on its trajectory; determining relative positions of the projectile's launch point, the observer, and an expected impact point; ballistically modelling the projectile; and tracking the projectile through the sequence of images using a track before detect algorithm.

Abstract: A drawbar device that facilitates engagement to, maneuvering of, and disegement from a loaded slipsheet includes a top plate, base plate, and roller for frictionally engaging a slipsheet tab, a means for disengaging the roller therefrom, and a connecting means for transmitting to the base plate the force necessary for maneuvering the loaded slipsheet. The present invention advantageously facilitates the movement of heavy supplies and material in the absence of conventional mechanized material handling equipment.

Abstract: A retinal scanning display, an active-pixel image sensor array, and an im processor track the movements of the human eye. The scanning nature of the display acts as a sequential source of eye illumination. The active-pixel image sensor array is directed toward the cornea of the eye through a matrix of micro-lens. The sensor is integrated with a comparator array which is interfaced to bilateral switches. An element address encoder and latch determines the sensor element which reaches maximum intensity during the raster-scan period of the display driver. Over a display field refresh cycle, the invention maps the corneal surface to a data table by pairing sensor activations to the specular reflections from the cornea of the sequenced source lights.

Abstract: A wide dynamic range RF mixer is shown using wide bandgap semiconductors such as SiC, GaN, AlGaN, or Diamond instead of conventional narrow bandgap semiconductors. The use of wide bandgap semiconductors will permit RF mixers to operate in higher RF environments, to be less susceptible to out-of-band jamming and interference, and to be more effective in receiving weak RF signals in the presence of strong unwanted signals.

Abstract: Anti-armor projectiles comprising a main projectile having a single warhe and an additional autonomous precursor warhead which is stowed with the main projectile and attached to the main projectile just before firing, thereby providing a tandem warhead capability and improved lethality for the main projectile. The attachable precursor warhead is packaged with the main projectile so that the length and diameter of the main projectile is not increased while it is stored and until the autonomous precursor warhead is attached just prior to firing. The autonomous warhead may be a chemical energy (CE) warhead or a kinetic energy (KE) warhead so that when attached to existing CE warhead or KE warhead projectiles, tandem CE-CE, tandem CE-KE, tandem KE-KE, or tandem KE-CE warhead projectiles are created. The autonomous, attachable warhead is completely self-contained and prior to firing is affixed to and stowed adjacent the main projectile without exceeding the length and diameter constraints of the main projectile.

Abstract: To increase a yield of a hydrocarbon such as oil from a subsurface reserv, the reservoir is stimulated by pumping liquid gun propellant (LP) into the reservoir and igniting the LP. The LP is pumped into a packed-off region in a cased well; the depth of the packed-off region is selected to lie within the reservoir. The ignition of the LP causes a pressurization of the reservoir, thus fracturing the reservoir. The fracture increases a surface area through which the hydrocarbon can be extracted, and the heat from the ignition reduces the viscosity of the hydrocarbon.

Abstract: An apparatus for determining thickness of a wall or coal seam includes a ice for measuring the time of sound travel through the thickness; a flexible isolation bellows that mechanically supports the device for measuring the time of sound travel; and a retractable isolation arm attached to the isolation bellows. The device for measuring the time of sound travel may be a single-beam pulse sonar system. The single-beam pulse sonar system includes a pulse generator, a power amplifier, a transmit/receive switch, a reciprocal acoustic transducer, a receiver for determining the thickness, and a display and/or an electronic feedback circuit for steering an autonomous miner.

Abstract: A traveling array antenna which operates at microwave/millimeter frequencies is disclosed in which a like number of radiator elements are arranged in two mirror image branches, an RF signal feed is fed through a 180 degree compensating power splitter to each branch of the antenna array, each of the radiator elements includes an impedance matching transformer connected at its input side and in which a radiator terminating patch is connected to the end of each of the two mirror image branches.

Abstract: An automatic aider of human cognitive functions for the operation of computerized displays. The invention estimates in real-time the mental decision made in response to a displayed stimulus from the single-even, transient, evoked cerebral potential and the corresponding visual response. The invention attains high accuracy levels of decision classification by combining a unique parametric model of the cerebral potential with advanced techniques drawn from numerical analysis, artificial intelligence, and nonlinear regression analysis. The invention uses an expert system to determine the decision aiding to be provided to the human operator from the disparities among the estimations and the decisions that are expected from task scripts for the displayed stimulus.

Abstract: Ceramic ferroelectric composite materials comprising barium strontium titte/magnesium and oxygen-containing compound composite further doped with rare earth (lanthanide) oxides. More particularly, these inventive composites are comprised of Ba.sub.1-x Sr.sub.x TiO.sub.3 /Mg--O based compound/rare earth oxide composite, wherein x is greater than or equal to 0.0 but less than or equal to 1.0, and wherein the weight ratio of BSTO to Mg compound may range from 99.75-20 wt. % BSTO to 0.25-80 wt. % Mg compound, and wherein said rare earth oxide additive comprises less than about 10 mole percent of the composite. The rare earth oxides of the composite include all oxides of the lanthanide series elements including scandium and yttrium, as well as combinations thereof. The magnesium-based compound may be selected from the group consisting of MgO, MgZrO.sub.3, MgZrSrTiO.sub.3, MgTiO.sub.3, and MgCO.sub.3.

Abstract: An optoelectronic device comprises a detector, an emitter and a modulator corporated into a single semiconductor chip. The optoelectronic device provides electrical isolation and optical interconnection (via waveguides) of the components of the semiconductor chip. Contacts for providing forward and reverse bias voltages are included in the device. The optoelectronic device is fabricated by growing a strained-layer quantum diode structure to produce a piezoelectric field in a quantum well, electrically isolating portions of the structure, and optically interconnecting portions of the structure. The fabrication is carried out by using an implant process or an etching process, and without having to use either regrowth techniques or packaging together of multiple optical elements.