Abstract: A survivor locator system allows for the detection of the location for a person who is lost and requires recovery and extraction from their current environment. By using a phase matched antenna set, a GPS receiver, and a handheld simplified beacon-equipped survival transponder, an estimated distance and bearing data set can be retrieved. If this data set estimation is then fed through an error reduction filter, such as a Kalman filtering algorithm, continually refined location coordinates can be generated, leading the search and rescue crew members to the survivor. The survivor locator system and methods provide a handheld survival radio with reduced complexity.

Abstract: A sensor for sensing a property of a plurality of analytes includes a substrate having a resonant frequency that varies based on contact with a predetermined property of an analyte. The substrate has an analyte contact surface and a non-analyte contact surface located opposed to the analyte contact surface. The analyte contact surface is configured to receive a plurality of analytes. A plurality of pairs of electrodes are operatively connected with the nonanalyte contact surface, each of the electrodes being spaced apart one from another.

Abstract: Rare earth metal containing compounds of the formula Sr2YbSbO6 have been prepared with high critical temperature thin film superconductor structures, and can be fabricated into a superconductor insulator superconductor step edge Josephson junction, as well as being used in other ferroelectrics, pyroelectrics, and hybrid device structures.

Abstract: A firearm includes a barrel that has a central axis, a receiver fixedly supporting the barrel, and a gunstock that is connected to the receiver and that has a longitudinal axis. The gunstock and the receiver are each configured to provide for angular movement of the gunstock relative to the receiver and, in turn, the barrel whereby the central axis of the barrel varies in a generally radial direction extending from the longitudinal axis of the gunstock. In this way, the firearm may be discharged by a warfighter, standing adjacent to a corner, around the corner.

Abstract: A firearm includes a barrel that has a central axis, a receiver fixedly supporting the barrel, a gunstock that is connected to the receiver and that has a longitudinal axis and a fore grip connected to the receiver. The gunstock and the receiver are each configured to provide for angular movement of the gunstock relative to the receiver and, in turn, the barrel and wherein the fore grip and the receiver are each configured to provide for angular movement of the fore grip relative to the receiver and, in turn, the barrel whereby the central axis of the barrel varies in a generally radial direction extending from the longitudinal axis of the gunstock. In this way, the firearm may be discharged by a warfighter, standing adjacent to a corner, around the corner.

Abstract: A firearm includes a barrel that has a central axis, a receiver fixedly supporting the barrel, a gunstock that is connected to the receiver and that comprises a longitudinal axis, and a shoulder stock extending in a plane that is generally perpendicular to the longitudinal axis of the gunstock. The gunstock and the receiver may each be configured to provide for angular movement of the gunstock relative to the receiver and, in turn, the barrel whereby the central axis of the barrel varies in a generally radial direction extending from the longitudinal axis of the gunstock. In this way, the firearm may be discharged by a warfighter, standing adjacent to a corner, around the corner.

Abstract: Rare earth metal containing compounds of the formula Sr2LuSbO6 and Sr2LaSbO6 have been prepared as high critical temperature thin film superconductor structures, and can be used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Abstract: Rare earth metal containing compounds of the general formula Sr2RESbO6, wherein RE is a rare earth metal, have been prepared as dielectric substrates and buffer layers in thin film superconductor structures, and can be used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Abstract: A one-way reflective sensor shield with an increased bandwidth meta-materials coating is provided which substantially reduces or eliminates deleterious electronic signatures and backscattering. The one-way reflective sensor shield with meta-materials coating operates according to surface plasmonic coupling phenomena and achieves a mirror-like one-way reflection of electromagnetic signals. In this arrangement, the meta-materials coating is composed of a dielectric material, and the corrugated metal strips are composed of a metallic conductive material with a negative dielectric constant, to allow surface plasmonic coupling between the plasma in the metal and the incident electromagnetic field. Surface plasmons occur at the interface of a material with a positive dielectric constant, such as dielectric surface, with that of a negative dielectric constant, usually a metal or doped dielectric, such as the metal strips. Sensor devices and sensor shielding systems are also provided.

Abstract: A packaging system for piezoelectric devices is provided that substantially reduces and avoids the deleterious effects of environmental vibrations and shocks with gas or fluid-filled chambers that drastically improve the resonator's ability to withstand unwanted disturbances and decrease or eliminate the attendant frequency shifts. The damped piezoelectric resonator packaging system combines a resonator package, a membrane and gas/fluid-filled chambers that dampen dynamic amplification of the resonator and firmly restrain the resonator within the packaging system. The selection of gas or fluid for the chamber depends upon variables such as the type of waves being propagated and interaction with the piezoelectric substrate.

Abstract: A smart bollard includes a compartment wherein a smart bollard circuit may be located and the smart bollard circuit, in turn, includes at least one processor, a transceiver that may be connected in circuit with the processor and configured to communicate with a central control station in response to commands from the processor, at least one sensor provided for sensing for the presence of one or more airborne agents and at least one disinfection unit that is configured for receiving commands from the processor to effect a selected disinfection of a perimeter area about the bollard sleeve. Also, the processor may be configured to receive input from the at least one sensor concerning the presence of one or more airborne agents, analyze the input and provide commands to the at least one disinfection unit to effect a selected disinfection, and to communicate the presence of one or more airborne agents to the central control station via the transceiver.

Abstract: An information system, method, and computer program product is provided for the semi-distributed warning of existing or developing significant events and/or threats to all network bridges in the system, and then to affected users carrying a user warning and positioning device, while reporting the location of all user's carrying the user warning and positioning devices of the system to existing command and control systems. The present invention's future event warning capabilities permit those same users to be warned of impending events in enough time for the users to take positive actions in response to these events and/or address those events.

Abstract: The number of power amplifiers required to amplify a plurality of transmission signals is reduced by using non-linear transmission lines (NTL) circuits. In general, a “combining” NTL circuit is used to combine the plurality of transmission signals to form a soliton pulse. The soliton pulse is then amplified such that each of its component transmission signals are amplified. A “dividing” NTL circuit is then used to divide the amplified soliton pulse into its component amplified transmission signals. The amplified transmission signals can therefore be transmitted over a communications channel without requiring a separate power amplifier for each.

Abstract: A spectrum analyzer includes a resonator board that in turn has a substrate and a plurality of resonators. Each resonator may include a first segment that includes a first segment discontinuity and that may also define a boundary and a second segment that has a second segment discontinuity. The second segment may be spaced from the first segment and wherein the second segment is disposed within the boundary defined by the first segment. The resonator board may also include a plurality of wires each of which may be generally parallel to each other and each having a resonator interposed therebetween.

Abstract: Rare earth metal containing compounds of the formula Sr2LuSbO6 have been prepared with high critical temperature thin film superconductor structures, and can be fabricated into an antenna, as well as being used in other ferroelectrics, pyroelectrics, piezoelectrics, and hybrid device structures.

Abstract: Thin film bulk acoustic wave sensors with coatings of biological and chemical materials, multiple electrode depositions and a piezo-active thin film transducer layer are hosted on a substrate. The thin film bulk acoustic wave sensor suite, or T-BASS, produces a low-voltage, IC-compliant thickness-directed electric field that is substantially uniform over a substantial portion of the active area of the BAW structure. The BAWs produced are essentially extensional plane waves propagating away from the substrate surface and having phase progression substantially oblique to the substrate surface. For BAW applications requiring sensing by an active layer, it would be most desirable to have an electrode structure that is both IC-compliant and can be energized from a low-voltage source of electrical energy. The thin film BAW sensors are compatible with IC fabrication and processing techniques, such as photolithography. Both single channel and multiple channel thin film bulk acoustic wave sensors are provided.

Abstract: Proportional-delayed zero-crossing frequency-drift estimator devices are provided. Given N-number of time samples, the current zero-crossing time estimation technique uses only two zero-crossing time samples for repetition-rate estimation. The term “zero-crossing point” refers to the point where a sinusoidal waveform varies from a positive to a negative value and crosses the zero value in the process. The proportional-delayed zero-crossing frequency-drift estimator devices employ four zero-crossing time samples by utilizing both proportional zero-crossing points for current information and delayed zero-crossing points for past information so that the noises in the time samples will be smoothed out making a less noisy estimation.

Abstract: Augmented magic sphere rotator permanent magnetic structures are provided by augmenting a magic sphere augmented with an interior magnet that attains significant decreases in mass, bulk and length of the optically active element. Also provided is a multiple augmented magic sphere rotator permanent magnetic structure with two augmented magic spheres positioned in tandem that provides an advantageously significant reduction in mass. The augmented magic sphere rotator permanent magnetic structures of the present invention provide the desirable advantages of specifically decreased mass and bulk of the structure and decreased total length of the optically active elements. The augmented magic sphere rotator permanent magnetic structure and multiple augmented magic sphere rotator permanent magnetic structure can be used as Faraday rotator structures.

Abstract: An acceleration insensitive piezo-microresonator provides substantially reduced acceleration sensitivity with a plano—plano piezo-microresonator, upper gap and lower gap embedded in a rigid structural supporting member holding major surfaces of the piezo-microresonator firm and steady. The piezo-microresonator has neither electrodes on its surfaces nor contacts with any electrodes. Electrodes are doped regions incorporated into the support member. The upper and lower gaps are adjacent to the major surfaces of the piezo-microresonator, permitting it to vibrate freely. The support member surrounds and supports the plano—plano piezo-microresonator plate, upper gap and lower gap, maintaining a constant upper gap height and lower gap height. The electrodes provide a thickness-directed electrical field exciting the piezo-microresonator. A method of desensitizing a resonant frequency of a piezo-microresonator to acceleration stresses is also provided.

Abstract: An individual flotation device includes a shell that has a cavity for receiving air and a housing that is connected to the shell. The housing has a metal air battery compartment that is dimensioned and configured to receive a metal air battery and also has an aperture. The housing may be located on the shell such that the aperture will generally remain above water during use of the flotation device. A membrane that may comprise hydrophobic properties may be located within the aperture of the housing.