Abstract: An assembly method comprising: providing a digital model of an aircraft airframe (200), the digital model comprising digital models of component parts (202, 204) of the airframe (200); providing the component parts (202, 204), each comprising one or more predrilled fastener holes; fixing a first component part (202a) to a support structure (1102); fixing a second component part (204a) to an end effector (1112) of a robot arm (1110); using the airframe digital model, controlling the robot arm (1110) to move the second component part (204a) relative to the first component (202a) as specified in the airframe digital model to cause one or more predrilled holes in the second component (204a) part to align with one or more predrilled holes in the first component part (202a); and attaching the second component part (204a) to the first component part (202a) using fasteners through the aligned predrilled holes.

Abstract: A system and method to aid in guidance, navigation and control of a guided projectile including a precision guidance munition assembly is provided. The system and method obtain raw position data during flight of the guided projectile, the raw position data including a plurality of position data points from the guiding sensor for determining positions of the guided projectile, establish a window including a portion of the plurality of position data points, smooth the portion of the plurality of position data points in the window, and determine a reduced noise position estimate of the guided projectile, based, at least in part, on the smoothed portion of the plurality of position data points in the window. The system and method may determine a velocity estimate of the guided projectile and predict an impact point of the guided projectile relative to a target.

Abstract: A guided projectile including a precision guidance munition assembly utilizes at least one maneuver envelope to optimally control movement of at least one canard to steer the guided projectile during flight. The maneuver envelopes optimize movements of the at least one canard that effectuate movement in either the range direction or the cross-range direction, or both. The maneuver envelope enables optimal timing such that maneuvering in one direction does not come at the expense of maneuver authority in the other direction.

Abstract: Techniques are provided for amplitude control of radio frequency signals for transmission. A methodology implementing the techniques according to an embodiment includes calculating an average power level of a segment of the signal. The method also includes calculating a maximum magnitude of samples of the segment. The method further includes generating a first scale factor based on the average power level, as a calculation of the reciprocal of the square root of the ratio of the average power level to a maximum power limit. The method further includes generating a second scale factor based on the maximum magnitude, as a calculation of the ratio of the maximum magnitude limit to the maximum magnitude. The method further includes scaling the samples of the segment based on the smaller of the first and second scale factors.

Abstract: A system and method for detecting or identifying substances based on spectral response signatures is provided. The system utilizes IR imagery, singularly or stored in a database, in operative communication with a database or library of known spectral response signatures. The system correlates the spectral response signature detected, or inherent, in an image or image library, with the set of known signatures in the spectral database. The system generates a report of the substances or chemical compounds present in at least a portion of the image. The system can also query a database of IR products for an area of interest, and return results in a report or via an interactive tool, for IR products containing specific IR spectral results.

Abstract: The system and method of frame differencing in high frame rate video to mitigate distortion caused by a bladed rotating assembly in the high frame rate video. The system and method applies one or more thresholds and a scaling factor and use a buffer of pixel values to mitigate distortions caused by blades as they pass in front of an imager.

Abstract: An ordnance includes a nose cone configured to be attached to a fuze or a warhead. The nose cone, when attached or coupled to the fuze or warhead, covers the fuze and at least a portion of the warhead to provide the ordnance with an aerodynamic profile. The nose cone has a shape that improves the aerodynamic profile of the ordnance as compared to ordnance that does not include a cover over the fuze. The improved aerodynamic profile enables the ordnance to achieve a greater range (approximately 20% or more) than ordnance that does not have a separate nose cone covering the fuze.

Abstract: The system and method of global positioning system (GPS) anti-jam (AJ) AJ antennas utilizing a circular array of patch antennas. In some cases the circular array is conformal. The elements are single patch, dual band (L1/L2) and are linearly polarized. A mode former and progressive phase tapers are used.

Abstract: A system and method for rank estimation of electromagnetic emitters is provided. One exemplary feature of the system and method includes the use of a Fixed Sigma Gaussian Mixture Model (FSGMM) to determine a rank estimation of electromagnetic emitters. Another exemplary feature of the system and method includes the use of a Gaussian Mixture Model (GMM) clustering approach in conjunction with an Akaike Criterion Information (AIC) to determine a number of clusters and associated statistics of emitters.

Abstract: Systems and methods for double-exposure image processing utilizing inversion techniques are provided. The systems and methods of the present disclosure recover single-exposure images from double-exposure images and strain images from double-exposure images.

Abstract: The present disclosure relates to a system and technique for a system for detecting fluorescing particles on a target comprising a viewing device configured to view the target and a light subsystem configured to illuminate the target, wherein the target includes a fluorescing particle that effectuates the fluorescent feedback second wavelength. In one example, no additional fluorescing agent or additive, other than the fluorescing particle, is added to the target. A passive cooling subsystem is configured to prevent overheating of the system without expending additional energy resources. The system includes a filter in operative communication with the viewing device having a selected filter wavelength configured to allow light to pass that is greater than the first wavelength and at least one non-transitory computer readable storage medium having instructions encoded thereon.

Abstract: A tail kit assembly of a guided munition having a tail kit base connected to a trailing end of a projectile body. The tail kit base is rotatable relative to the projectile body. A trimmable rudder has forward and rearward ends. The forward end is pivotally coupled to the tail kit base, such that the trimmable rudder can, relative to the tail kit base, between retracted and extended orientations. An actuator is fixed between the tail kit base and the rearward end of the trimmable rudder. The actuator is electrically coupled to an onboard guidance system that controls actuation of the actuator to pivot the trimmable rudder between the retracted orientation and the extended orientation.

Abstract: Apparatus for a Directed-Energy Weapon An apparatus for a directed-energy weapon comprises: an assessment system arranged to, during an assessment phase, perform an assessment of a target environment, wherein the target environment comprises a target, and the assessment comprises determining a possible engagement efficiency of the target by the directed-energy weapon; and a controller arranged to, during an engaging phase, control the directed-energy weapon to direct energy towards the target environment conditionally upon the possible engagement efficiency.

Abstract: A radio frequency (RF) filter includes a signal conditioning circuit and a bandstop filter. The signal conditioning circuit receives a broadband RF signal that includes both a jamming signal at a jamming frequency and a signal of interest and generates a plurality of clock signals. Each of the plurality of clock signals has a substantially same frequency as the jamming frequency, but a different phase shift. The bandstop filter receives the RF signal and the plurality of clock signals. The bandstop filter attenuates signals within a bandstop centered at the frequency of the plurality of clock signals. A self-tuning N-path filter is provided.

Abstract: Techniques are disclosed for filtering a radio frequency (RF) signal using an N-path bandstop filter with an extended, spurious-free upper passband. In an embodiment, a bandstop filter includes a bank of three switched capacitors in series with the RF signal path through the filter, in contrast to 4- or 8-capacitor banks or other bandstop filters where N is a power of 2. In this 3-path example configuration, an undesirable spurious bandstop notch at the 3rd and 5th harmonics of the clock frequency are eliminated or substantially reduced, improving performance of the filter in the desired passbands while preserving the notch in the desired stopband at high RF signal frequencies. Another N-path bandstop filter embodiment includes a bridged T-coil circuit, which absorbs a shunt capacitance of the bandstop filter into the bridged T-coil circuit.

Abstract: A wing member (14b) for an air vehicle (10), said wing member comprising a core section (20) defining its longitudinal axis and having upper and lower surfaces, at least one of said surfaces comprising apparatus (22) selectively configurable between at least two positions, wherein in a fully extended position, at least portions of said apparatus extend outwardly from said respective surface so as to increase the effective cross-sectional area of said wing member and define an effective aerofoil in respect thereof.

Abstract: A Launch Acceptability Region [LAR] display system and method for a payload-releasing platform, the system being configured to be communicably coupled to a LAR computing module (104) configured to compute LAR data representative of a Launch Acceptability Region in respect of said platform based on a set of input parameters and predefined payload performance parameters, the system comprising: —an input module (100) configured to obtain or receive a first input parameter value in respect of a first of said input parameters, generate a set of second input parameter values in respect of said first of said input parameters, said second input parameter values being different to and at respective intervals from, said first input parameter value, and input said first input parameter value and said second input parameter values to said LAR computing module so as to cause said LAR computing module to compute, based on each of said first and second input parameter values, a respective LAR and output a set of LAR data, e

Abstract: Techniques are provided for implementing a custodianship model for decentralized track fusion. A methodology implementing the techniques according to an embodiment includes negotiating, between a first decentralized track fuser (DTF) and one or more peer DTFs. The method also includes accepting, by the first DTF, custodianship of a track of an object from one of the peer DTFs based on a first negotiation. The method further includes updating, by the first DTF, the track based on fusion of data items associated with the track. The data items are received from one or more of the peer DTFs. The method further includes transferring, by the first DTF, custodianship of the updated track to one of the peer DTFs based on a second negotiation. In some cases, the transfer may be initiated by detection of a failure state of the first DTF.

Abstract: A charging system for a vehicle is provided. The charging system is for charging an energy storage system of the vehicle using grid power. The grid power may be an external three-phase AC. The charging system may use field weakening techniques to reduce a peak line-line voltage detected at input terminals of conversion circuitry when a need is determined.

Abstract: A direct-digital receiver architecture is configured to make maximal use of the dynamic range of its analog to digital converter (ADC). The receiver includes an analog frontend that applies a variable gain factor to the analog input signal, a gain level unit that determines the variable gain factor by monitoring the digital signal that is output by the ADC, a gain scaling unit that determines a digital scale factor according to the determined gain factor, and a gain factor multiplier that multiplies the digital signal by the scale factor to produce a scaled digital signal, said multiplying being time aligned with the variable gain factor. The receiver further includes a digital signal processing train that is cognisant of the dynamic range of the ADC, variable gain factor and the digital scale factor for the time domain sample being processed.