Abstract: The present system estimates target motion with nonzero acceleration (including maneuvering uncertainty) using angle only (AO) measurements. The present approach employs a mixed coordinate system framework by combining modified spherical coordinate (MSC) system and Reference Cartesian Coordinate (RCC) system to keep accurate information flowing from one frame to the other while eliminating the numerical sensitivity of the angle measurements to the TSE vector. This integrated coordinate systems framework is achieved due to the state vector information of two frames (RCC and MSC) is effectively preserved between processing cycles and state vector transformation steps. The AO TSE architecture and processing schemes are applicable to a wide class of passive sensors.

Abstract: A system and method of verifying hardware that includes software configured to control its operation, the method comprising providing an abstracted version of hardware to be tested; verifying the functionality of the hardware; writing test bench software using physical-layer routines; drafting hybrid verification intellectual property modules, wherein the hybrid verification intellectual property modules comprise both synthesizable and non-synthesizable code and are configured to stimulate the abstracted hardware and to test software anticipated to be used in connection therewith; and creating network-level routines that can be passed to physical-layer routines as part of a hardware verification process.

Abstract: Diverse types of crew interfaces (400, 430, 450) are provided for outputting visible, audio and tactile information to a pilot for flight control. A unified estimation of the current aircraft state and of a current phase of flight are made (110), based on flight status information. Respective coordinated visible, audio and tactile presentations for the diverse types of crew interfaces are generated, (120) coordinated so that they provide mutually consistent indications of the unified estimation of the current aircraft state, according to the unified estimation of current flight phase. The respective coordinated presentations are output (130) by the diverse types of crew interfaces to the pilot. By coordinating crew interface outputs across sight, sound and touch senses, this can relieve the pilot of workload in interpreting unsynchronised or incoherent outputs from different types of interfaces.

Abstract: A method and a system for inductively programming a fuze including at least one target coil arranged in a projectile by a fuze setter including at least one setter coil, the method including i) conveying at least one of a projectile or a fuze setter by an actuator to bring the at least one target coil and the at least one setter coil in an inductive coupling position, ii) programming the fuze by transferring predetermined fuzing data from the at least one setter coil to the at least one target coil, iii) optionally transferring fuzing data from the at least one target coil to the at least one setter coil to confirm correct programming of the fuze has been performed, and iv) retracting at least one of the fuze setter or projectile from the inductive coupling position when the transfer of fuzing data has been completed.

Abstract: A waveguide structure for a head up display in which a reflective output coupling structure is formed of a separate, but connected, component to a main waveguide. In a method of manufacture for such a waveguide the output coupling structure may be formed by depositing a material on a main waveguide, impressing the reflective structure into that material, and curing the material.

Abstract: Fuse system for a projectile for a ranged weapon, the fuse system comprising: a plurality of magnetic field sensors, each sensor being arranged to provide a signal that changes in response to a relative change in position and/or orientation between the system and the Earth's magnetic field, and wherein each sensor has a different alignment in terms of magnetic field sensitivity, and a controller arranged to receive one or more signals from the plurality of magnetic field sensors, and to activate a fuse of the projectile depending on the received one or more signals.

Abstract: A pressure sensing system includes a pressure transducer, a pressure manifold, and a heater assembly. The pressure transducer is configured to measure pressures at one or more locations of a vehicle engine. The pressure manifold is configured to cover a face of the pressure transducer and provide an interface for transferring air or gas generated at the one or more locations of the vehicle engine. The heater assembly is configured to heat one or more portions of the pressure transducer and one or more portions of the pressure manifold and maintain a temperature of each of the pressure transducer and the pressure manifold above a predetermined temperature level.

Abstract: A system and method for adaptive spurious signal (spur) processing at a broadband RF receiver. Spur processing addresses the detection of spurs generated by the receiver when high level RF signals are present at its input. The spurs can lead to undesired false detections. Based on signal parameters of the received RF signal, the system detects a strong enough real signal that would cause a spur and prevent generation of false reports. The adaptive spur mitigation scheme uses multiple detection and report thresholds to enable false report rejection with an improved high probability of rejecting false detections, while minimizing the adverse effects on multi-tone dynamic range. The necessary detection and report thresholds are generated based on a system level behavioral model that predicts the performance of several different types of spurs as a function of signal parameters. The thresholds are tuned to match the behavior of the dominant spur.

Abstract: Circuit techniques are disclosed for improving the SFDR of a DAC. In an embodiment, a DAC includes a resistor ladder network operably coupled to input logic circuitry and an output. The input logic circuitry receives a multi-bit input signal and effectively creates a plurality of processed input signals therefrom. The resistor ladder network is configured to receive the plurality of processed input signals and includes a corresponding plurality of current paths. Each current path includes: a current switch operably controlled by one of the processed input signals; a first resistor in series with the current switch; a second resistor in series with the first resistor; and a feedforward capacitor in parallel with the second resistor. The output is operably coupled to each of the plurality of current paths and is configured to output an analog output signal that corresponds to the multi-bit input signal.

Abstract: A transducer system includes a housing, an electromechanical transducer within the housing, a wicking material adjacent to a portion of the electromechanical transducer, and a coolant solution within the housing. The coolant solution transitions from a liquid phase to a gaseous phase in response to a temperature of the electromechanical transducer exceeding a threshold temperature. In some example cases, the coolant solution has a boiling point of less than about 60° C., which effectively defines the threshold temperature. The coolant solution may be chosen such that it remains a liquid during a first phase (cooling via conduction), and then evaporates during a second phase (cooling via conduction and convection) as the electromechanical transducer heats up.

Abstract: A direction finding system and method to utilize synthetic apertures within a single short pulse transmission to extrapolate additional data relating to the signal to thereby increase the accuracy of the direction finding results given by a single short pulse is provided. The direction finding system may further exploit the movement of a platform to create the synthetic apertures within the signal data.

Abstract: A guidance system for deployment on-board a projectile includes a laser-seeking detector, an imaging device, and a control module. The laser-seeking detector is designed to detect the position of the projectile with reference to a laser spot on a target. The imaging device is designed to capture one or more images in front of the projectile. The control module is designed to control a flight direction of the projectile based on input received from the laser-seeking detector in a first mode, control the flight direction of the projectile based on input received from the imaging device in a second mode, and switch between the first mode and the second mode while the projectile is in flight towards the target. Both guidance technologies are leveraged to develop an improved guidance technique that provides highly accurate targeting and allows for a faster rate of fire to deal with multiple targets.

Abstract: The present invention provides a vehicle comprising: a rotor and a stator; at least one planar control surface coupled to the rotor, wherein the rotor is configured to rotate relative to the stator such that, in use, the at least one planar control surface moves from a first position to a second position, and wherein in the first position the planar control surface is controllable to affect substantially only the pitch of the vehicle and in the second position the planar control surface is controllable to affect substantially both of the pitch and yaw of the vehicle, or substantially only the yaw, or in the first position the planar control surface is controllable to affect substantially only the yaw of the vehicle and in the second position the planar control surface is controllable to affect substantially both of the pitch and yaw of the vehicle, or substantially only the pitch of the vehicle. The present invention also provides a method of controlling a vehicle.

Abstract: A system and associated method determines the characteristics of an electric network including distance to a fault through the use of a power divider and a measuring device that measures a quantity from which voltage magnitude can be determined. The measuring device may be a power detector. The power detector may include a power meter to measure voltage and/or a power sensor to measure amplitude. Then, the results from the power detector are used in conjunction with a Hilbert transform to estimate the phase associated with at least two voltage magnitudes when a combined signal is a minimum phase signal.

Abstract: A transducer system includes a housing having an opening, an electromechanical transducer within the housing, and an elastomeric boot over the opening. At least a portion of the elastomeric boot includes copper-comprising particles. In some applications, the copper acts as an antifouling agent and/or enhances the thermal conductivity of the elastomeric boot.

Abstract: A method is provided for operating an image generator, arranged to generate and to output signals for displaying image elements of a predefined set of image elements, each image element being defined by respective varying deflection signals. A colour change trigger is firstly defined comprising an additional image element defined by varying deflection signals different to varying deflection signals of an image element of the predefined set. Varying deflection signals of the defined colour change trigger are generated and output thereby to indicate a respective colour for use in displaying an image element of the predefined set. An image generator is also provided, configured to implement the method. A method is also provided for generating digital colour image data from signals output by such an image generator. A display system is also provided incorporating such an image generator together with a colour change trigger detector and scan converter.

Abstract: A laser warning receiver system and method having at least four optical components mapped to a photodetector array to provide for omnidirectional detection of incident laser light. In some cases, a fifth optical component is mapped to the central portion of a photodetector array to provide hemispheric detection of laser light. The laser warning receiver system is configured to detect laser light in the NIR, SWIR, MWIR, and/or LWIR range using a single photodetector array and ROIC.

Abstract: The system and method for lightweight spiral antenna array packaging uses a foam core and metallic elements such that the foam core is machined to accept the folded metallic elements to create a compact and light weight assembly. The assembly can be bonded to other assemblies to form arrays. The array is then encapsulated in a prepreg fiberglass skin with a conductive layer of fabric/screen therein.

Abstract: A system and process for testing and analyzing a laser beam is provided. The system and process allows for repeatable testing of a laser beam to provide a beam intensity profile while accounting for variation in measurements attributable to outside factors. The system and process further allows for simultaneous measurement and analysis of a laser beam having multiple wavelengths.

Abstract: A frequency divider includes a circuit that receives an input clock signal having a period T on an input port thereof and generates an output clock signal on an output port thereof having a period MT in response to a control signal specifying M is disclosed. Here, M is a positive integer and all transitions between logical one and logical zero in the output clock signal occur at integer multiples of T. In one embodiment, the circuit includes a module string having characterized by N identical modules connected in series to form a string of modules. Each module is configured such that when the clock signal having period T is input to the first module, the output clock signal having a period of MT is output from the last module, where M can have any value between one and a maximum number that depends on N.