Abstract: An embedded linear motor drive for an IR camera comprising linear motor components that integrates into a sliding shutter is disclosed. The linear motor components can be a linear array of magnets, or a series of ridges or gear teeth. A motor drive is aligned with the linear motor components. The drive can be a series of coils connected to a power source that can move the shutter when the coils are energized in series. The drive can also be a pinion shaft with a friction wheel at one end or pinion gear that can connect to the ridges or gear teeth and move the shutter when the shaft is rotated.

Abstract: A projection display is provided including a first plate-like waveguide (7), an image providing light source device (10 and 11) located to inject image bearing light into the first plate-like waveguide 7. An input means (12) is provided on the waveguide (7) to reflect the image bearing light internally along the waveguide (7). A transmission grating (13) within the first plate-like waveguide (7) is provided to output image bearing light from the waveguide (7). A second plate-like waveguide (8) is located co-planar with the first plate-like waveguide (7) and has a coupling grating (17) therein to receive the image bearing light from the first plate-like waveguide (7). The second plate-like waveguide (8) also includes an exit grating (18) therein for diffracting the received image bearing light, diffracted by the coupling grating (17) out of the second plate-like waveguide (8) towards a viewer (6).

Abstract: An embedded linear motor drive for an IR camera composing linear motor components that integrates into a sliding shutter is disclosed. The linear motor components can be a linear array of magnets, or a series of ridges or gear teeth. A motor drive is aligned with the linear motor components. The drive can be a series of coils connected to a power source that can move the shutter when the coils are energized in series. The drive can also be a pinion shaft with a friction wheel at one end or pinion gear that can connect to the ridges or gear teeth and move the shutter when the shaft is rotated.

Abstract: An active display based targeting and weapon siting system for providing focusing and targeting data is disclosed. In one embodiment, the active display based targeting and weapon siting system includes an angled optic device configured to allow a user's line of sight to pass through the angled optic device. Further, the active display based targeting and weapon siting system includes a display module configured to provide images including video images, multicolor images and/or wide boresight adjustment and to direct the images into the user's line of sight through the angled optic device.

Abstract: A method and apparatus (1) for processing SAR imagery data, comprising: determining variance ratio data from the SAR imagery data; and processing, for use in change detection, the determined variance ratios data by making use of the F-distribution. The method may further comprise selecting a desired false alarm rate; and wherein making use of the F-distribution comprises determining a change detection threshold for the determined variance ratios data that is dependent upon the F-distribution and the desired false alarm rate. Another possibility is that making use of the F-distribution comprises using the F-distribution to determine probabilities for the determined variance ratios data.

Abstract: A method and apparatus for determining a trajectory for a vehicle can include: identifying a starting position (p0) and desired terminal position (P) for the vehicle; linearly approximating dynamics of the vehicle; and using the starting position (p0), terminal position (P), and linear approximation, determining the trajectory; wherein the linear approximation can be constrained by a requirement (e.g., specification) that the vehicle may not travel in a region; a center point of the region is at a distance from a predetermined point on the vehicle substantially equal to a minimum turn radius of the vehicle, in a direction substantially perpendicular to a velocity of the vehicle; and a distance from the center point of the region to a point on a perimeter of the region is greater than or substantially equal to the minimum turn radius of the vehicle.

Abstract: A method and apparatus for determining a trajectory for a vehicle are disclosed, wherein the method can include identifying a starting position (p0) for the vehicle; identifying a desired terminal position (P) for the vehicle; linearly approximating dynamics of the vehicle; and using the starting position (p0), the desired terminal position (P), and the linear approximation, determining the trajectory for the vehicle. The linear approximation can be constrained by requirements that: an acceleration of the vehicle during the trajectory is less than a threshold value for the acceleration; and the threshold value for the acceleration is dependent on an infinity norm of a velocity of the vehicle. The vehicle may have a curvature limit.

Abstract: A method of generating probability data for use in assessing performance of a system and a mission involving the system, the method including receiving (1002) model data representing a combined model of a system and a mission involving the system. The method further includes producing (1004) a Conjunctive Normal Form (CNF) encoding of the combined model data and producing (1006) a smooth deterministic Decomposable Negation Normal Form (sd-DNNF) representation of the CNF encoding. The method further includes producing (1008) an Arithmetic Circuit based on the sd-DNNF representation; receiving (306) observation data, and performing (308) inference on the observation data using the Arithmetic Circuit in order to produce probability values relating to performance of the system and the mission.

Abstract: Methods and apparatus for determining a route for a vehicle (2), the method comprising: providing a set of routes, each route from a starting location to a terminal location and determined using a first algorithm; acquiring, by a processor (6), a starting location (A); acquiring, by the processor (6), a terminal location (B); using the starting and terminal locations, selecting, by the processor (6), one or more routes from the provided set of routes dependent upon the starting location (A) and the terminal location (B); and, using the acquired starting and terminal locations, and the selected routes, performing, by the processor (6), a second algorithm to determine a route for the vehicle (2) from the starting location (A) to the terminal location (B), the second algorithm comprising an optimization process (with respect to certain objectives) using the selected routes as at least part of an initiator set of routes.

Abstract: Disclosed is a dynamic real-time boresighting system and method. In one embodiment, the method includes obtaining a mapping function by associating deflection and rotation data of strategically located at least two sensors with sensor deflection data, real-time or static sensor readings from at least two sensors which are strategically located on the component in the aircraft or the land vehicle, while the aircraft or the land vehicle is moving or static respectively and determining an alignment of the component by comparing the real-time or static sensor readings obtained from the strategically located at least two sensors with the obtained mapping function.

Abstract: CdSiP2 crystals with sizes and optical quality suitable for use as nonlinear optical devices are disclosed, as well as NLO devices based thereupon. A method of growing the crystals by directional solidification from a stoichiometric melt is also disclosed. The disclosed NLO crystals have a higher nonlinear coefficient than prior art crystals that can be pumped by solid state lasers, and are particularly useful for frequency shifting 1.06 ?m, 1.55 ?m, and 2 ?m lasers to wavelengths between 2 ?m and 10 ?m. Due to the high thermal conductivity and low losses of the claimed CdSiP2 crystals, average output power can exceed 10 W without severe thermal lensing. A 6.45 ?m laser source for use as a medical laser scalpel is also disclosed, in which a CdSiP2 crystal is configured for non-critical phase matching, pumped by a 1064 nm Nd:YAG laser, and temperature-tuned to produce output at 6.45 ?m.

Abstract: The invention relates to an electric drive device (10; 110; 210; 310; 410) comprising an electric motor (20) with a stator (24) and a rotor (22) arranged to rotate a drive shaft (26), a housing (30; 130; 230; 330; 430) in which the electric motor (20) is housed, which housing has an essentially ring shaped cross section with an imaginary center axle (X), wherein the electric motor (20) is eccentrically arranged in the housing (30; 130; 230; 330; 430) in such a way that the rotational center of the drive shaft (26) of the electric motor (20) runs essentially parallel to and at a distance from the center axle of the housing (30; 130; 230; 330; 430) so as to form a desired space (36) between the electric motor and said housing. The invention also relates to motor vehicle with an electric drive device.

Abstract: A composite focal plane assembly with an expandable architecture has a multi-layer, double-sided aluminum nitride (AlN) substrate and vertical architecture to achieve the dual function of focal plane and electronics backplane. Imaging dice and other electrical components are mounted and wire bonded to one surface and then direct backplane connectivity is provided on the opposing surface through a matrix of electrical contacts. In one embodiment, a flexible connector is sandwiched between the AlN focal plane and a FR-4 backplane is used to compensate for differences in coefficient of thermal expansion (CTE) between the AlN and commercially available high density circuit card connectors that are commonly manufactured from materials with CTE properties more closely approximating FR-4. In an alternate embodiment, the FR-4 and flexible connectors are eliminated by using high density circuit card connectors that are fabricated out of materials more closely matching the CTE of AlN.

Abstract: An identification apparatus, capable of distinguishing between a first class of objects and a second class of objects. This identification apparatus includes an identification tag, which is capable of providing a certain reflection band and a certain thermal emission band. The identification apparatus also includes a thermal weapon sight which has a long-wave infrared band-pass filter. This band-pass filter passes through a desired range of wavelengths and filters out an undesired range of wavelengths. The reflection band and the thermal emission band are detectable within the desired range of wavelengths.

Abstract: Techniques are disclosed for producing and/or optimizing jamming codes for use in directional infrared countermeasures (DIRCM) systems. In some embodiments, Fourier analysis may be implemented to produce jamming codes which more efficiently (e.g., time efficient, power efficient) and/or more reliably (e.g., no frequency gaps) achieve optical break-lock (OBL) of infrared (IR)-seeking missiles/threats over a broad range of frequencies (e.g., short-wavelength IR, mid-wavelength IR), as compared to heritage jamming code methodologies. Some embodiments may be implemented in military/defense applications (e.g., protection of military/tactical aircraft or other vehicles); some other embodiments may be implemented in non-military/commercial applications (e.g., protection of domestic, civilian, and/or commercial aircraft or other vehicles).

Abstract: A system for testing and calibrating communications equipment or modules. A processor is configured to perform a test or calibration procedure on a communications unit under test (UUT) in response to commands entered by an operator. Test and measurement instruments arranged to be responsive to the computer include a power supply for activating selected portions of signal paths in the UUT, one or more signal generators, and one or more instruments for measuring output signals produced by the UUT in response to the test signals. The UUT has switches and terminals for inputting test signals from and returning output signals to the instruments, and an adapter is connected between the processor and the UUT. When performing a calibration procedure, the adapter operates the switches and connects the terminals on the UUT to the test and measurement instruments under the control of the processor.

Abstract: A method of controlling a radar system by receiving a radar return signal from a target and generating a range-Doppler target image signature of the target; selecting a spectral line within the range-Doppler target image signature from a modulation feature on the target which includes an effective point scatterer; providing a range profile for the spectral line; obtaining a reference range profile of a reference point scatterer; determining a difference between a power at a range shorter than a peak corresponding to the modulation feature in the range profile and a power at a corresponding range of the reference range profile; and generating a first control signal or a second control signal arranged to provide or prevent provision of the range-Doppler target image signature based on the difference.

Abstract: A system and method for amplifying and wave shaping a signal is presented. A system includes a Class F/Inverse Class F radio frequency (RF) power amplifier (PA). The RF PA includes an amplifier and an output matching network. The amplifier amplifies a radio wave signal to produce and an amplified signal. The output matching network wave shapes the amplified signal using a plurality of tuning stubs to generate an output signal. The tuning stubs operate at different harmonics of the amplified signal. When operating in a Class F mode the plurality of tuning stubs act as short circuits at even harmonics and the plurality of tuning stubs act as open circuits at odd harmonics. When operating in an Inverse Class F mode the plurality of tuning stubs act as open circuits and at even harmonics the plurality of tuning stubs act as short circuits at odd harmonics.

Abstract: A frequency synthesizer and oscillator are disclosed for reducing noise in processed signals. The synthesizer and oscillator comprise an array of frequency dividers adapted to receive an input signal, which is derived from a single signal source having a prescribed frequency. The synthesizer and oscillator further comprise at least one frequency multiplier coupled to at least one of the frequency dividers, such that in use, the dividers and the at least one multiplier are operable to generate a plurality of frequencies which are coherent with the prescribed frequency. A regulated power supply is also disclosed comprising a filter and first and second regulators, for reducing noise in the output voltage of the power supply.

Abstract: A system and method for calculating a range delay is presented. A method begins by transmitting a first message at a first transmit time at a lower layer of a first node to a second node. A first service primitive is sent is sent to an upper layer associated with the first node with the first transmit time. A second message is received at the lower layer containing a first receive time of the first message at the second node. A second receive time of the second message is determined and sent with a second service primitive with the first receive time to the upper layer. A range delay is calculated in the upper layer based on one or more of the first transmit time, the first receive time and the second receive time.