Abstract: Described herein is a method and apparatus for improving high range resolution of a radar system. The method comprises phase shifting a radar pulse to be transmitted at substantially the radar transmission frequency and phase shifting the received radar pulse at substantially the radar transmission frequency. The phase shifting is implemented using a monolithic microwave integrated circuit (MMIC) (42) driven by a digital circuit (44) to provide a phase profile which is applied to radar pulse (52) produced by a radar pulse generator (54) and which is also applied to a received radar pulse (60). A master clock and synchronizer (72) provides clock signals for an analogue to digital converter (ADC) (68), the generator (54) and the digital circuit (44) so that the MMIC (42) is clocked at a frequency which is directly harmonically related to the ADC (68). This avoids spurious beat frequencies which could interfere with a wanted radar signal.

Abstract: A trusted computer system that offers Linux® compatibility and supports contemporary hardware speeds. It is designed to require no porting of common applications which run on Linux, to be easy to develop for, and to allow the use of a wide variety of modern development tools. The system is further designed to meet or exceed the Common Criteria EAL-5 or higher rating through incorporation of required security features, as well as a very high level of assurance for handling data at a wide range of sensitivity (e.g., classification) levels in a wide range of operational environments. This is achieved through the implementation of a well-layered operating system which has been designed from the ground up to enforce security, but which also supports Linux operating system functions and methods.

Abstract: A read/write circuit for accessing chalcogenide non-volatile memory cells is disclosed. The read/write circuit includes a chalcogenide storage element, a voltage limiting circuit, a current-to-voltage converter, and a buffer circuit. The voltage limiting circuit, which is coupled to the chalcogenide storage element, ensures that voltages across the chalcogenide storage element will not exceed a predetermined value during a read operation. During a read operation, the current-to-voltage converter, which is coupled to the voltage limiting circuit, converts a current pulse read from the chalcogenide storage element to a voltage pulse. By sensing the voltage pulse from the current-to-voltage converter, the buffer circuit can determine a storage state of the chalcogenide storage element.

Abstract: A multi-level framework that allows an application to be developed independent of the chip or board, and any dependency is built in as part of the framework of the field programmable device (FPD). According to one embodiment, a field programmable device (FPD) comprises at least one hardware design language (HDL) application core with at least one component virtual interface respectively coupled to the HDL core, wherein the HDL core and the component virtual interface form a component, and wherein the component virtual interface has a plurality of pre-defined interfaces for communicating with the core. The component is hardware independent of the FPD. There is a target platform interface coupled to the component virtual interface wherein the target platform interface incorporates hardware specific information. A framework manager is coupled to the target platform interface and communicates with at least one operating system.

Abstract: Device for manoeuvring a tension wheel in a chassis of a tracked vehicle, in which the tension wheel is rotatably mounted on a telescopic rocker arm (12). The rocker arm can, on the one hand, be lengthened and shortened by a first hydraulic cylinder and, on the other hand, swivelled about a transverse axis (14) by a second hydraulic cylinder for the purpose of raising and lowering the tension wheel. The first hydraulic cylinder is designed to act upon a lever arm (58) of a sleeve (54) rotatable in a hub part (20) of an inner part (18) of the rocker arm (12), which sleeve has an eccentrically mounted crank pin (52) which is hinge-connected to an outer part (22) of the rocker arm for the purpose of displacing the latter relative to the inner arm part, in the event of a mutual rotation motion between the sleeve (54) and the hub part (20) of the inner rocker arm part, in such a way that the rocker arm is lengthened upon a downward swivel motion of the arm and the tension wheel.

Abstract: An acoustic transducer design having a slotted oval-shaped shell and active transducer elements located on the inner surface of the shell is disclosed. The design provides a high power, ultra-low frequency oval projector having a number of applications, including underwater seismic prospecting and fish mitigation.

Abstract: The material or fragment discharge is controlled by means of a device (4) in connection to the triggering, preferably by means if an initiation charge (5), of the main charge (3) in the ammunition unit (1). The liner is devised as being exposable for effect from the explosive charge or charges (6) that are devised as being able to be initiate able upon or shortly prior to the triggering of the main charge. The explosive charge achieves, upon initiation a pre-deformation of the liner (4) prior to the liner being affected by the triggering of the main charge for said material or fragment discharge The fragment forms can be rendered more effective in relation to design solution known by prior art by means of the choice explosive charge form and placement, different fragment forms can obtain among different ammunition units.

Abstract: The present invention is a Control System Architecture (CSA) for a multi-component armament system. The CSA provides dynamic reconfiguration of multiple nodes (e.g. a component, a subsystem, or a virtual simulation) in a Simulation-Emulation-Stimulation (SES) environment utilizing redundant client-server bus configuration of the nodes in a hierarchical model. The CSA provides for ease of configuration of nodes for any specific application, automated system reconfiguration capabilities to detect and bypass failed nodes or re-group available remaining nodes in the event of degraded mode operation, and expansion and/or downsizing of nodes without requiring a modification to the overall system architecture.

Abstract: A digital receiver automatically detects and non-coherently demodulates a multiplicity of interfering digitally modulated signals transmitted simultaneously at approximately the same carrier frequency. The receiver includes one or more antenna inputs (e.g., polarization and/or space diverse), a parameter estimator module, and a multiuser detector for estimating the data transmitted by each interfering signals and adapted to operate with at least one of a MUD algorithm with partially quantized prior information and a MUD algorithm based on prewhitened data.

Abstract: An error correction decoding (ECC) processing scheme is disclosed that reduces computational complexity normally associated with multiuser detection (e.g., TurboMUD) solutions, without causing degradation in quality of service or decreasing the total throughput. Error correction decoding algorithms are applied only to portions of the estimates that were affected by the immediately previous MUD update process. Even though the MUD and/or ECC updating is targeted so as to reduce complexity of each iteration, all of the estimates are maintained and remain candidates for future updates. As such, there is no negative impact real-time or future performance. This targeting approach can be used in conjunction with many variations of MUD, including full-complexity or reduced complexity, and may include MUD with confidence ordering or voting, and other techniques for facilitating efficient and effective MUD processing.

Abstract: A method of identifying a configuration of an object, the method comprising the steps of: specifying a plurality of different object configurations; for each specified object configuration, using a first simulation procedure to simulate the specified conditions so as to generate data that can be used to evaluate the object configuration against the optimisation criterion; identifying a functional relationship between data generated for each specified object configuration; using the functional relationship and the optimisation criterion to select a data point, and identifying an object configuration corresponding thereto; and using a second simulation procedure, wherein the second simulation procedure comprises iteratively calculating values of variables characterising the object configuration until the values satisfy a convergence criterion, wherein for at least one of the specified object configurations, the first simulation procedure is completed before the values calculated therein satisfy the convergence

Abstract: A transconductance amplifier generally limits its current output, and specifically decreases its current output as a function of temperature. The circuit is made up of an operational amplifier and two drive transistors that are connected to a first part of the amplifier circuit and a second part of the amplifier circuit respectively. The first part of the circuit is driven by positive input voltages, and the second part of the circuit is driven by negative input voltages. A transistor in each part of the circuit clamps a voltage, thereby limiting the current output. The negative temperature coefficient of the transistor also decreases the output current as the temperature of the circuit rises.

Abstract: The present invention is for a high quality digital FM radio system that utilizes the subcarrier band to generate digital audio signals. The hybrid FM radio system utilizes the subcarrier band to transmit the digital FM signals that are synchronized to the analog FM signals. The receiver processes both the analog and digital signals and a high quality FM signal results. The receiver may switch between the traditional analog signal and the higher quality digital signal automatically to present the best possible audio to the user.

Abstract: An anti-tank guided missile (ATGM) weapon system with an overhead mounted, electrically driven, remote controlled weapon station that supports a tube-launched optically-tracked wire-guided (TOW) missile launcher and a machine gun, typically the caliber .50 M2, on a single traversing and elevating platform. Above-deck assemblies include the TOW and gun cradle, a dual pod missile launcher, the Improved Target Acquisition System (ITAS), target acquisition subsystem (TAS), elevation and traverse motors and gear transmissions and drive electronics, and an ammunition case. Below-deck assemblies include the ATGM weapon system control handles, biocular display, control panel, ITAS fire control system (FCS), ITAS battery power source (BPS), slip-ring, and gunner's seat. Electrical cables connecting the two assemblies penetrate the vehicle deck directly below the weapon System.

Abstract: Flat-plate antennas have a compact form by use of a folded path network construction whereby received signals are coupled through a unitary network structure to an adjacent signal processing unit. On a folded path basis, processed signals are then coupled back into the network structure, combined with other received processed signals and then passed out of the network structure to an adjacent signal port. The signal processing unit may provide either amplification, phase shifting, or both. By reciprocal operation a signal to be transmitted may be divided into sub-array components, processed (e.g., power amplified and phase shifted), further divided, and coupled to each slot radiating element (e.g., 256 slots) of an array of slot sub-arrays.

Abstract: A method of improving the security of computer communications over a connecting network comprising the steps, carried out before a data packet enters the connecting network from a user domain, of tagging the data packet from a user domain with a security level marking and appending the tagged data packet with a string formed from a check-sum made over the data packet and security level marking tag to form a datagram. The integrity of the data is protected and the method can be used to prevent the mis-routing of data packets to user domains of lower security classification.

Abstract: This invention relates to a method of potting a component, namely encasing a component (110) in a potting compound (112) with, optionally, all or some of the voids in the component also being filled with potting compound. In particular, the present invention relates to potting a component that will be subject to high electric field strengths in use. The method comprises introducing an inert gas into a first pressure vessel (100) containing the component to be potted thereby to create an inert environment, introducing a potting compound into the first pressure vessel and allowing the potting compound to cure in the inert environment.

Abstract: An integrated photonic device having a vertical optical connection between vertically oriented waveguides and a process for making the same is disclosed. A first waveguide is patterned and etched onto an underlying substrate. A cladding layer is placed over the waveguide and substrate. The cladding layer is coated with a photoresist, and then patterned with holes that are slightly offset from the underlying waveguide. The holes are implanted with nitrogen doses at an angle. The nitrogen doses form an angled implantation of SiON. The material change and accompanying index of refraction change due to the angled implantation optically couples the underlying waveguide with an outside surface of the cladding layer. A second waveguide or circuit can then be patterned on the outer surface of the cladding and connected to the angled implantation and underlying waveguide. Multiple layers of waveguides or circuitry can be connected to each other in this manner.

Abstract: An apparatus for measuring coupled aerodynamic stability and damping derivatives of an object, such as a missile, towed decoy, etc. in a wind tunnel. The object is mounted on a bearing in the wind tunnel and contains an instrumentation package which provides a plurality of signals for determining coupled moment derivatives. The package includes three rate sensors, three accelerometers, and two thermal detectors for measuring the time rate of change of the full six degree of freedom state vector for aerodynamic derivatives.