Abstract: A system and method for generating a low probability of detection (LPD) waveform is presented. The method modulates pre-modulated symbols using pulse-position modulation (PPM) to produce PPM modulated signals with a modulated in-phase (I) component and a modulated quadrature (Q) component. Next, frequency hopping is used to transmit the modulated I component at a randomized start time within a time slot and to transmit the modulated Q component at the randomized start time within the same slot. The modulated Q component does not overlap with the modulated I component. The method can also overlay transmission security (TRANSEC) pseudorandom (PN) overlay on the modulated Q component and the modulated I component before the modulated Q component and the modulated I component are transmitted.

Abstract: Message or traffic data is transmitted from a given radio or node for reception by one or more other nodes in a communications network, by arranging the node for transmitting the data according to a selected one of a number of different medium access protocols. The medium access protocol selected for a given message or traffic is determined according to one or more of (a) the size of the traffic, (b) the priority of the traffic, (c) the periodicity of the traffic, and (d) whether the traffic is broadcast or unicast to the other nodes in the network. Each radio includes one or more processor and memory modules configured to output messages or traffic for transmission from the radio according to the selected medium access protocol. By using distributed scheduling and traffic control to protect against hidden nodes, the radios can maintain agile portability in tactical urban environments.

Abstract: A hardware device for monitoring and intercepting data packetized data traffic at full line rate, is proved. In high bandwidth embodiments, full line rate corresponds to rates that exceed 100 Mbytes/s and in some cases 1000 Mbytes/s. Monitoring and intercepting software, alone, is not able to operate on such volumes of data in real-time. An exemplary embodiment comprises: a data delay buffer with multiple delay outputs; a search engine logic for implementing a set of basic search tools that operate in real-time on the data traffic; a programmable gate array; an interface for passing data quickly to software sub-systems; and control means for implementing software control of the operation of the search tools. The programmable gate array inserts the data packets into the delay buffer, extracts them for searching at the delay outputs and formats and schedules the operation of the search engine logic.

Abstract: Techniques and architecture are disclosed for performing alignment harmonization of a collection of electro-optical and/or gimbaled componentry that is to operate within a common coordinate frame. In some cases, the techniques and architecture can provide a cost- and time-efficient approach to achieving alignment harmonization that is compatible, for example, with field-test and/or operational environments. In some instances, the techniques and architecture can be used in concert with error calibration techniques to further improve the accuracy of the alignment harmonization. The techniques and architecture can be utilized with a wide range of components (e.g., sensors, armaments, targeting systems, weapons systems, countermeasure systems, navigational systems, surveillance systems, etc.) on a wide variety of platforms. Numerous configurations and variations will be apparent in light of this disclosure.

Abstract: On-board diagnostics for fleet maintenance is improved by embedding a microprocessor programmed with a prognostication algorithm on a vehicle.

Abstract: A 3D wafer-integration uncooled infrared (IR) microbolometer focal plane array (FPA) sensor includes a first die with an FPA of uncooled IR microbolometers, a second die signal-processing layer. The dies are vertically aligned, stacked with 3D wafer bonding, and interconnected. Interconnection include vertical electrical interconnects. Separate optimized manufacturing processes are used for die, so that additional processing costs of the FPA die are leveraged and 3D integration is completed at wafer level, minimizing total device cost and maximizing die count per wafer.

Abstract: A multi-function programmable transceiver is described. The transceiver includes a driver circuit and a receiver circuit, which allows an Application Specific Integrated Circuit (ASIC) device to drive and receive data from other ASIC devices. Both the driver and receiver circuits share a common input/output (I/O) pin. The driver circuit can be programmed to provide one of the several driver functions, such as CMOS, TTL, PCI, HSTL, SSTL and LVDS. Other functional features of the transceiver that can be programmed are driving strengths or output impedance, output power supply voltage, single ended or differential mode of HSTL/SSTL transceivers, and class 1 or class 2 operations for SSTL/HSTL transceivers. The receiver circuit can also be programmed to provide one of the several receiver functions, such as CMOS, TTL, PCI, HSTL, SSTL and LVDS.

Abstract: A head-mounted or helmet-mounted display apparatus is provided. The apparatus includes an optical element which in use is disposed in front of the eyes of a user. The optical element comprises a waveguide portion. The apparatus further includes a first light source and a second light source of image-bearing light. The apparatus further includes first diffraction element for propagation of image-bearing light of the first light source through the optical element. The apparatus further includes a second diffraction element for propagation of image-bearing light of the second light source through the optical element. The first light source and the second light source is disposed such that relative angular movement of the first light source and the second light source about an axis of symmetry of the optical element adjusts the inter-pupillary spacing of a first visible image and a second visible image presented to a respective eye of a user.

Abstract: Enhanced stability for infrared countermeasure systems is provided by using a pair of single axis rate sensors having orthogonal active axes, preferably aligned with the elevation axis and the azimuth axis of the gimbal. The outputs of the orthogonal single axis rate sensors are used to detect instantaneous aircraft angular movement and to use the detected movement to drive the elevation and azimuth motors of the gimbal to move the output mirror for the gimbal to cancel the detected movement.

Abstract: A system for the vergence of images from a plurality of cameras, the system provides a first camera; a second camera disposed at some distance from that first camera; a focus adjustment whereby the focus of the first camera can be adjusted by a user; the focus adjustment being configured with a range finder whereby the distance from the first camera to a target is ascertained; a look up chart wherein divergence distance of images generated from the first camera from images of the second camera are provided for pre-calculated ranges; and a processor whereby the images generated by the first camera are superimposed on the images generated by the second camera by the divergence distance determined from the lookup.

Abstract: Techniques and architecture are disclosed for controlling the temperature of a fiber laser system. In some embodiments, a single thermoelectric cooler (TEC) may be utilized to control the temperature of multiple system components. In some embodiments, a TEC may be physically/thermally coupled to a laser diode, which in turn may be physically/thermally coupled with a mounting plate to which one or more fiber grating holders are physically/thermally coupled, and an optical fiber that is operatively coupled with the laser diode may be physically/thermally coupled with the one or more fiber grating holders. In some embodiments, this may provide a thermal pathway/coupling between the optical fiber (e.g., its fiber grating(s)), and the TEC. In some embodiments, this may reduce/minimize the quantity of temperature control components, reduce system size/complexity, increase system dependability, and/or increase system performance/efficiency.

Abstract: Disclosed is a system for voice communication that includes a power supply assembly, at least one handset configured to transmit voice signals, a voice cable assembly communicably coupled with the power supply assembly and the at least one handset, and a main terminal communicably coupled with the voice cable assembly. The voice cable assembly includes a cable harness configured to receive a predetermined power from the power supply assembly and to receive voice signals from the at least one handset. Also, the voice cable assembly includes a voice cable circuit card assembly communicably coupled with the cable harness to receive the predetermined power and the voice signals from the cable harness. The voice cable circuit card assembly is configured to adapt the voice signals by utilizing the predetermined power in order to match a predefined voice requirement. Further disclosed are a voice cable assembly and a method for voice communication.

Abstract: A method and system of determining the position of a radio signal transmitter are described. The method includes determining the type of radio signal being transmitted from the radio signal transmitter by analysing radio signal characteristics and correlating different sets of information to determine the position of the radio signal transmitter. Each set of information corresponds to a different relative position of at least one receiver to the transmitter and includes radio signal data derived from radio signals received by the at least one receiver from the transmitter at each respective relative position and positioning data containing information about the position of the at least one receiver at each respective relative position.

Abstract: A method of generating a set of solutions to a route-planning problem includes iteratively applying a Probability Collective (PC) method, each iteration including sampling from a probability distribution defined over a set of decision variables relating to a route-planning problem and using an archive set of decision variables and a set of the sampled decision variables to update the probability distribution for use in a subsequent PC method iteration. A set of solutions, each including at least one decision variable with an associated objective function result evaluated by the PC method iterations, is output.

Abstract: Techniques are disclosed for selecting a closest to optimal radar/emitter location for single-ship applications. In accordance with some embodiments, given single-ship geolocation estimates are organized so that clusters of those estimates can be identified, wherein optimal solutions may be found in consecutive, adjacent segments of distance (bins) along each axis of given a coordinate system. Once the clusters are identified in each axis, an optimal cluster can be selected for each. To determine the closest answer to optimal, the coordinate data points in each of the optimal clusters can be averaged (or other sound mathematical process) for each axis in the coordinate system, so as to provide an optimal 3-D coordinate in the given coordinate system. In other embodiments, the optimal 3-D coordinate can be further used to establish an origin in a second coordinate system (e.g., for conversion from 3-D to 2-D coordinate system).

Abstract: A projection display 210 arranged to display an image to an observer 212 use waveguide techniques to generate a display defining a large exit pupil at the point of the observer 212 and a large field of view, while using a small image-providing light source device. The projection display 210 uses two parallel waveguides 214, 216 made from a light transmissive material. One waveguide 214 stretches the horizontal pupil of the final display and the other waveguide 216 stretches the vertical pupil of the final display and acts as a combiner through which the observer 212 views an outside world scene 220 and the image overlaid on the scene 220. In a color display, each primary color is transmitted within a separate channel R, G, B.

Abstract: A large and massive panel is maneuvered and supported by a work piece support which has an upper horizontal work piece support surface for receiving the panel in extended surface-to-surface contact. An array of apertures is provided in the work piece support surface, beneath same of which are provided low friction bearing elements moveable between a raised, load-bearing position in which the panel can be slid onto the work piece support and a retracted position in which the panel is left in extended surface to surface contact with the work piece support.

Abstract: A method for designing a secondary sub-system for monitoring the condition of a platform is disclosed. The platform can include one or more primary sub-systems. The method can include identifying stakeholders of the platform, capturing information requirements of the stakeholders, determining data requirements corresponding to the information requirements, defining a sensor array comprising sensors suitable for providing output signals relating to condition characteristics of the one or more primary sub-systems, and defining procedures for converting the output signals from the sensor array to the data requirements, thereby to fulfil the information requirements of the stakeholders. The method can be implemented using a design tool having a graphical user interface with a hierarchical layer structure.

Abstract: According to the invention there is provided a structural metallic rechargeable battery and a method of producing same. The battery uses one of an acid, alkaline or Li-ion chemistry and the battery has an anode structure, a cathode structure, each of which comprise a conductive foam which contains the active electrochemical reagents, and a structural separator which separates the conductive foams of anode from the cathode respectively. The anode structure and the cathode structure are each formed from a metal sheet or foil.

Abstract: Apparatus and a method for forming a metallic component by additive layer manufacturing are provided. The method includes the steps of using a heat source such as a laser to melt the surface of a work piece and form a weld pool; adding wire or powdered metallic material to the weld pool and moving the heat source relative to the work piece so as to progressively form a new layer of metallic material on the work piece; applying forced cooling to the formed layer; stress relieving the cooled layer by applying a peening step, for example with a pulsed laser, and repeating the above steps as required to form the component layer by layer.