Abstract: A soft-kill countermeasure system utilizing a tracking radar to enhance existing countermeasures and enable new countermeasures to be utilized to combat the ever evolving and increasing sophistication of threats. The use of the tracking radar may further allow for immediate threat defeat confirmation which may allow for rapid or immediate redirection of the countermeasure system to address additional simultaneous threats.

Abstract: A workbench system comprising: a workbench; a multi-axis robot; a visible light projector; and a controller; wherein the workbench and the robot are located in a common workspace; the controller is configured to: determine a movement operation for the robot; and, using the determined movement operation, control the visible light projector to project a visible light indication onto at least one of a surface of the workbench and a surface of the workspace; the visible light indication indicates a limited area of the workbench and/or workspace, the limited area corresponding to a limited volume of space; and the movement operation is such that, if the robot performs the movement operation, the robot moves entirely within only the limited volume of space.

Abstract: A payload mechanism for a vehicle is provided.

Abstract: Techniques are provided for determination of a guided-munition orientation during flight based on lateral acceleration, velocity, and turn rate of the guided-munition. A methodology implementing the techniques, according to an embodiment, includes obtaining a lateral acceleration vector measurement and a velocity of the guided-munition, and calculating a ratio of the two, to generate an estimated lateral turn vector of the guided-munition. The method also includes integrating the estimated lateral turn vector, over a period of time associated with flight of the guided-munition, to generate a first type of predicted attitude change. The method further includes obtaining and integrating a lateral turn rate vector measurement of the guided-munition, over the period of time associated with flight of the guided-munition, to generate a second type of predicted attitude change.

Abstract: An angle only (AO) target state estimation (TSE) system and method using a mixed coordinate system (Modified Spherical Coordinate (MSC) and Reference Cartesian Coordinate (RCC)) as an integrated system. This integrated system 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. The mixed coordinate system provides robust real-time slant range estimation in a bootstrap fashion, thus turning passive AO measurements into equivalent active sensor measurements with built-in recursive range information but with greatly improved the TSE accuracy meeting the miss distance required by many engagement missions.

Abstract: A system for suppressing sight blooming in an infrared sight includes determining an n×n grid size; creating a grid of n×n averages; calculating a mean; determining if a heat source is detected; detecting a heat source radius; calculating the average of the outside boxes; estimating the average of the inside boxes; setting the source to zero; smoothing the boxes; subtracting the mean of the outside from the mean of the inside; feeding back the result into history; up-sampling the offset; subtracting the offsets; and displaying the image.

Abstract: Techniques are provided for signal detection based on the Gibbs phenomenon. A methodology implementing the techniques according to an embodiment includes transforming an input signal to the frequency domain and performing median filtering of amplitudes associated with frequency bins of the frequency domain transformed input signal. The median filtering is performed to attenuate longer duration or continuous signal components that may be present in the input signal. The method also includes identifying a sinc function main lobe in the median filtered signal, the sinc function associated with the Gibbs phenomenon. The method further includes detecting a discontinuity in the input signal based on the identified sinc function main lobe. The discontinuity is associated with a shorter duration signal component that is present in the input signal. Shorter duration signal components may include relatively narrow signal pulses and relatively fast rising or falling signal edges.

Abstract: Techniques are provided for emitter geolocation. A methodology implementing the techniques according to an embodiment includes measuring phase differences between radar signals received at one or more pairs of antennas. The method also includes calculating hypothesized phase differences based on ray tracings from hypothesized emitter locations at a first set of grid points, to the antennas. The method further includes generating scores based on correlations between the measured phase differences and the hypothesized phase differences. The method further includes generating an error ellipse based on candidate grid points associated with scores that are above a threshold. The process may be repeated on a second set of grid points, bounded by the error ellipse, to generate a second set of scores. The grid point, from the second set of grid points, that is associated with the highest of the second set of scores is selected as the estimated emitter geolocation.

Abstract: A radio frequency circuit for processing a radio frequency signal. The circuit comprises a variable frequency oscillator system and a radio frequency signal processing circuit arranged to process a radio frequency signal using the output of the variable frequency oscillator system. A digitiser is arranged to receive the output of the radio frequency signal processing circuit and generate a digitised signal. A phase noise capture circuit is arranged to capture the phase noise in the output of the variable frequency oscillator system. The radio frequency circuit is arranged to compensate for the effect of the phase noise in the output of the variable frequency oscillator system on the output of the radio frequency signal processing circuit, by digitally processing the digitised signal generated by the digitiser using the output of the phase noise capture circuit.

Abstract: Techniques and architecture are disclosed for allowing the provenance of an integrated circuit to be verified using a dielet in wireless communication with a die through a near-field communications protocol where the positions of the dielet and die are fixed relative to one another during manufacturing such that their respective means for wirelessly communicating with one another are aligned.

Abstract: Techniques are provided for tracking of signals. A methodology implementing the techniques according to an embodiment includes filtering a first segment of an input signal, associated with a first time interval, into a first plurality of frequency bins. The method also includes detecting a signal of interest (SOI) in one of the first plurality of frequency bins. The method further includes filtering a second segment of the input signal, associated with a second time interval, into a second plurality of frequency bins. The method further includes determining movement of the SOI from a first frequency bin, of the first plurality of frequency bins, to a second frequency bin, of the second plurality of frequency bins. The method further includes tracking the SOI based on the movement determination. In some cases, the method further includes creating a composite signal based on the tracking over multiple frequency bins and multiple time intervals.

Abstract: An optical seeker assembly having an optical detector located within the wing or canards of a precision guided munition. The optical seeker provides on-wing processing that generates low bandwidth detection data that can be easily transferred to a primary CPU located within the main body or fuselage of the precision guided munition. The on-wing processing reduces or eliminates the need for optical fibers extending between an optical wedge and an optical detector to reduce the likelihood of optical fibers from impeding in the mechanical deployment of the wing and reduces losses. The reduction or elimination of optical fibers between the optical wedge and the optical detector further enables the optical detection assembly to have a higher pixel ratio or transmitting raw data between the wedge and the detector by sending sampled detection data across a low bandwidth link to a CPU in the main body.

Abstract: A fault detection system for a system having a single DC input and a plurality of A/C loads such as an electric or hybrid electric vehicle. A plurality of inverters convert DC to 3-phase A/C and supply A/C power to a corresponding individual A/C load. Each inverter includes a common mode current transformer and a controller. An individual corresponding common mode current transformer is coupled to the 3-phase A/C output of the inverter. An individual corresponding controller is coupled to the output of an individual corresponding common mode current transformer and is coupled to an individual corresponding A/C load. Each controller is configured to detect a fault at the individual corresponding A/C load and in the case of detection of a fault at an individual corresponding A/C load, the corresponding controller disables the A/C load.

Abstract: A classifier network has at least two distinct sets of refined data, wherein the first two sets of refined data are sets of numbers representing the features values data received from sensors or a manufactured part. Performing, via at least two distinct types of support vector machines using an associated feature selection process for each classifier independently in a first layer, anomaly detection on the manufactured part. Then, using the stored data including refined data of at least two different types of data transforms and performing, via at least a two distinct types of support vector machines in a second layer, an associated feature selection process for each classifier independently. Forming at least four distinct compound classifier types for anomaly detection on the part using the stored data or coefficients. The ensemble of second layer support vector machine outputs compare the results to determine the presence of an anomaly.

Abstract: Passive filters, line replaceable units and a modular power supply are provided. The passive filter comprises an inductor and a diode bridge. The inductor has a first end and a second end. The first end is coupleable to a phase output of an inverter. The diode bridge comprises a first diode and a second diode. The anode of the first diode is coupled to the second end of the inductor and a cathode of the first diode is coupleable to a positive DC bus voltage. The cathode of the second diode is coupled to the second end of the inductor and the anode of the second diode is coupleable to a negative DC bus voltage. The passive filter output is coupleable to cable(s) for an AC electric machine. A reverse recovery charge of the diodes achieves a target DV/DT for an output voltage of the passive filter at operating temperatures.

Abstract: An optical system including a first lens element having an optical center, a second lens element having an optical center spaced apart from the first lens element and oriented such that a beam passing through the optical center of said first lens element will also pass straight the optical center of the second lens element, the beam defining an optical path; and at least one planar, optical slab configured to be movable between at least two positions, a first position wherein at least a portion of a planar surface of the optical slab is disposed between the first and second lens elements such that a beam transmitted therethrough also passes through the planar, optical slab and a second position wherein the planar, optical slab is fully outside of the optical path created by the first and second lens elements.

Abstract: Techniques are provided for tuning over a broad radio frequency (RF) bandwidth. A tuner implementing the techniques according to an embodiment includes an input module compromising a single-conversion superheterodyne receiver to convert a first RF signal to a processed RF signal by frequency translating from a first frequency range to a lower second frequency range. The input module is also configured to receive a second RF signal occupying the second frequency range and provide the second RF signal as a pass-through RF signal. The tuner also includes a down-conversion module to convert the processed RF signal to a first intermediate frequency (IF) signal by frequency translating the processed RF signal from the second frequency range to a lower third frequency range, and to convert the pass-through RF signal to a second IF signal by frequency translating the pass-through RF signal from the second frequency range to the third frequency range.

Abstract: A computing network data layer architecture or system includes an open data layer module comprising a translation layer. Translation flags are within the translation layer and each flag is associated with a database language of an underlying database that can be coupled architecture or system. The open data layer module is disposed at the lowermost layer of the architecture directly above the underlying backend database. The open data layer module allows for a system to replace or modify its backend databases without affecting the higher level visualization framework or user interface such that a user of the system is unaware which database is utilized or after one database has been replaced or swapped for another even though the databases may be disparate hand have different database language requirements.

Abstract: The present disclosure is a system comprising at least three electronically steered antennas arranged so that there is a baseline difference of a predetermined amount of wavelength between the centers of the antennas, typically configured as an obtuse or scalene triangle, where the distance between each antenna on an array is selected to provide the required accuracy and precision, the array having a timing circuit to ensure that the beam of each antenna is steered to the same azimuthal and elevation coordinates in space simultaneously. This enables the three electronically steered antennas to operate as an interferometer to determine a bearing to a target to ultimately determine the location thereof. The electronically steered antennas enable the system to be mounted on a platform in a small package that was previously difficult for traditional interferometers.

Abstract: Techniques are provided for decorrelation of intermodulation products in mixer circuits. A circuit implementing the techniques according to an embodiment includes four switches. Each of the switches comprise a complementary pair of n-channel and p-channel metal oxide semiconductor (NMOS/PMOS) field effect transistors (FETs). The NMOS/PMOS FETs include a source port, a drain port, and a gate port. The gate port is configured to receive an oscillator signal. The circuit also includes electrical conductors to couple the four switches into a double-balanced passive ring configuration to generate an output signal as a mix of an input signal and the oscillator signal. The output signal includes a third order intermodulation (IM3) product. The circuit further includes a voltage bias generator to generate a bias voltage to bias the input signal and the output signal. The magnitude and phase of the IM3 product are determined, at least in part, by the bias voltage.