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 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 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: 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: 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: 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: Thin films of ferroelectric composite material comprising barium strontium titanate (BSTO) combined with magnesium oxide additive are produced by metalorganic decomposition. The barium strontium titanate magnesium oxide ferroelectric composite comprises Ba.sub.1-x Sr.sub.x TiO.sub.3 /MgO, wherein x is greater than 0.0 but less than or equal to 0.75 and preferably is 0.4, and wherein the weight ratio of BSTO to magnesium oxide may range from 99 to 40 weight percent BSTO to 1 to 60 weight percent magnesium oxide. These films have desirable electronic properties and may have application to both active microwave and dynamic random access memory devices, including low dielectric constant, low loss factor, high tunability, and high resistivity. The films produced are uniformly thick and impurity free, with thicknesses of only 0.4 microns.

Abstract: A miniature, planar, inertially-damped, inertially-actuated delay slider uator is micromachined on a substrate and consists of a "slider", with zig-zag or stair-step-like patterns on the side edges, interacting with similar vertical-edged zig-zag patterns on "racks" which are positioned across a small gap on each side. The slider has been released from the substrate, and is captured vertically in its track by a non-interfering lattice or cover or other feature that bridges across from the top of one rack to the other. The racks are fixed to the substrate and the slider is forced axially down the "track" by an inertial load in the slider's axial direction. The slider is drawn along the track such that the "teeth" on the right edge of the slider engage with the teeth on the right rack. The slider is forced to move to the left as it slides down the faces on the right rack, until it is thrown clear of the right rack and goes across to engage similarly with the left rack.

Abstract: A novel ceramic ferrite/ferroelectric composite material having a low dissipation factor, voltage tunability, and proper impedance matching for the incident medium. The material comprises ferrites doped with the ferroelectric Barium Strontium Titanate (BSTO) or ferrites doped with the ferroelectric Barium Strontium Titanate (BSTO)/MgO. Preferred composites are magnesium ferrites doped with BSTO and magnesium ferrites doped with BSTO/MgO. Most particularly, the inventive composites are comprised of magnesium ferrites doped with Ba.sub.1-x Sr.sub.x TiO.sub.3 and magnesium ferrites doped with Ba.sub.1-x Sr.sub.x TiO.sub.3 /MgO, wherein x is greater than 0.00, but less than or equal to 0.75, and wherein the percent weight ratio of magnesium ferrite to BSTO or BSTO/MgO is 60 to 95 percent ferrite to 40 to 5 percent BSTO or 60 to 95 percent ferrite to 40 to 5 percent BSTO/MgO ferroelectric. A particularly well suited composite, i.e., one having a .mu./.di-elect cons.

Abstract: A method and apparatus wherein a Genetic Algorithm is used as an intelligent search technique addresses the problem of assigning sensor reports in multi-target tracking with one or more sensors. The inventive technique of tracking objects includes receiving sensor reports from at least one sensor over multiple time scans; formulating individuals in a GA population as permutations of the sensor reports; using each permutation to construct a hypothesis containing at least one track by a process of taking each sensor report in turn (in the order determined by the permutation) and making the best assignment available (either to an existing track or as the start of a new track); scoring each of the hypotheses; searching through a portion of the possible hypotheses, using a GA, to find a good hypothesis; and determining the state of the tracked object.

Abstract: A tridirectional inverter is disclosed which converts power from the single source into two different widely types of power outputs. This conversion s done by utilizing a magnetic element, i.e., a transformer, alternatively as a filter and as a voltage changing transformer. The function that the magnetic element provides is accomplished by selecting the frequency of the signal that is applied to the magnetic element.

Abstract: The present invention, an Electromagnetic Locomotion Platform (ELP) system, is an electronically powered device which allows human-like activities to be performed in all three axes: x, y, & z, in a confined and localized a for the purpose of attaining total immersion (both visual and physical) into Virtual Environments. The ELP system allows humans the ability to walk, jog, run, crawl, etc. in a stationary position, thus the user can "walk forever to nowhere", similar to the basic function of a treadmill. This feature can be enhanced by having the user wear a helmet mounted display (HMD) which is coupled to a computer generated Virtual Reality (VR) system. The VR system provides external environments to the HMD and when synchronized with the movements of the individual on the ELP, it displays visual changes in the surrounding environment according to the movements generated by the user.

Abstract: A high brightness optical parametric amplifier array uses energy--scaleable optical parametric amplifiers that provide high brightness output. The leability in energy is achieved by using an array of parallel crystal amplifiers to handle high laser energies. High brightness is obtained by using an optical phase conjugator to keep the phase front of the array coherent.

Abstract: Multiple resin transfer molding is the simultaneous injection of differing esins in fiber preforms with or without a separation layer. The flow of the resins is controlled by varying the permeabilities of the preforms and the separation layer. The method produces multifunctional hybrid composites made of multilayered preforms and multiple resins. A fundamental advantage of the invention is the simplification of the manufacturing process.

Abstract: The invention is a non lethal weapon cartridge comprising a projectile and means for propelling the projectile through a weapon barrel. A munition of this type can be employed by soldiers during operations-other-than-war, such as riot control during humanitarian missions, or by law enforcement personnel when a lethal response is not warranted. The projectile comprises a full-bore projectile body fitted with a compliant nose. The projectile is designed to be spin-stabilized such that it will fly, and impact, nose first, while describing a ballistic trajectory. The projectile is intended to be launched from a rifled weapon tube. The rifling imparts the spin necessary to achieve dynamic stability. The propulsion system utilizes a modern smokeless propellant in combination with a high-low technique to produce consistent interior ballistics.

Abstract: Mesh susceptors for use in induction heating and bonding processes are tailored to obtain more uniform heating across the susceptor and hence, the bondline, when bonding composite parts. The susceptors are tailored by cutting and removing segments from the mesh areas where the induced current and hence, heat generation, is highest. An algorithm is employed to predict the induced current patterns throughout the mesh so that areas of high heat generation can be identified and then cut and removed. In this way, essentially uniform temperatures in metal mesh susceptors may be achieved by specifically designed cut patterns within the mesh even though the mesh susceptor is subject to non-uniform magnetic fields.