Abstract: A system and method for recovering encoded data from a modulated baseband signal is disclosed. Aspects and embodiments of the system and method include receiving an analog input signal representing a modulated baseband signal, counting clock cycles of a reference clock, detecting a first transition and a second transition of the analog input signal indicating a first change and a second change in the modulated baseband signal, storing a first counter value corresponding to an amount of clock cycles elapsed between the first transition and the second transition, and determining a binary-valued bit sequence corresponding to the first counter value.

Abstract: A high electron mobility transistor (HEMT) includes a substrate; a source on the substrate; a drain on the substrate spaced from the source; and a gate between the source and the drain, wherein the gate has a stem contacting the substrate, the stem having a source side surface and a drain side surface, wherein a source side angle is defined between the source side surface and an upper planar surface of the substrate and a drain side angle is defined between the drain side surface and the upper planar surface of the substrate, and wherein the source side angle and the drain side angle are asymmetric. Methods for making the HEMT are also disclosed.

Abstract: A radio frequency (RF) circuit connection assembly comprises a RF circuit board and a RF connector. The RF circuit board has a first side and a second side opposite the first side. A RF circuit is located on the first side and an aperture extends through the RF circuit board from the first side to the second side. The RF connector comprises a barrel having a socket configured to receive a RF bullet, a flange having a mounting surface, and a RF connector pin extending laterally from the barrel. The barrel of the RF connector extends through the aperture of the RF circuit board such that the mounting surface of the flange is seated against the first side of the RF circuit board, and the RF connector pin is electrically coupled to the RF circuit on the first side of the RF circuit board.

Abstract: Subject matter regards colorizing a three-dimensional (3D) point set. A method of colorizing a 3D point can include voxelizing 3D points including the 3D point into voxels such that a voxel of the voxels including the 3D point includes a voxel subset of the 3D points, projecting the voxel subset to respective image spaces of first and second images used to generate the 3D points, and associating a color value, determined based on a respective number of pixels of the first and second images to which the voxel subset projects, with the 3D point.

Abstract: A packing module includes a volumetrically efficient structure for separately retaining sensors and a cable of a sensor array. The packing module includes a tray that supports the sensors and a retaining leaf arrangement that extends outwardly from the tray to retain the cable on the tray. The retaining leaf arrangement includes a plurality of nested leaves that are spaced relative to each other. Packing the module includes placing the sensors separately and in succession on the tray and inserting a portion of the cable in the retaining leaf arrangement in between each placing of a sensor. The placement of a sensor and insertion of a portion of the cable occurs alternately until the entire sensor array is accommodated. Deployment of the sensor array may occur by alternately removing a sensor and a portion of the cable until the sensor array is displaced from the module.

Abstract: A radio frequency (RF) waveguide housing includes a metal-diamond base with a first surface and a second surface opposite the first surface. The metal-diamond base includes an opening through a thickness of the metal-diamond base, and the opening includes a first side on a side of the first surface of the metal-diamond base and a second side on a side of the second surface of the metal-diamond base. The RF waveguide housing also includes an insert to be inserted in the opening and affixed to the metal-diamond base. The insert defines an interior volume within the opening of the metal-diamond base and a shape of the insert at the first side of the opening is configured to match an end of an RF waveguide coupled to the RF waveguide housing.

Abstract: A spring-loaded ball valve includes a spring, a first pin, a second pin, and a handle. The spring is configured to apply pressure to the first pin and second pin when the ball valve is in both the fully open and fully closed positions. The spring applies maximum torque when the ball valve is in the fully open or fully closed position to ensure the valve remains in the fully open or fully closed position.

Abstract: Aspects and examples are directed to programmable optical finite impulse response filters and optical infinite impulse response filters, which may be implemented as photonic integrated circuits.

Abstract: Described herein is an apparatus and a method for a low noise infinite radio frequency (RF) delayed-locked loop (DLL). The apparatus comprises a phase detector having a first input configured to receive a first RF signal, a second input, and an output; an infinite phase shifter having a first input configured to receive a second RF signal, an input bus, and an output connected to the second input of the phase detector; and a controller having a first input connected to the output of the phase detector and an output bus connected to the input bus of the infinite phase detector, wherein the output of the infinite phase shifter comprises a low noise signal in phase alignment with the first RF signal.

Abstract: Methods and apparatus for providing spectrally beam-combined fiber-based transmitters and/or receivers for laser communications, LiDAR, and similar devices. A transmitter can include a launch array configured to spatially position each output beam of pulsed lasers, a transform optical component to correct deflection of the output beams of the pulsed lasers from the launch array, and a dispersive optical element to combine beams from the transform optical element and generate a spectrally combined beam. A receiver can include spectral comb filters to spectrally discriminate multi-wavelength detected signals from background illumination.

Abstract: A flexible vacuum assembly fixture including a base; at least one arm coupled to the base; a suction cup fitting coupled to the at least one arm distal from the base; a vacuum generator fluidly coupled to the suction cup fitting via a vacuum tube; and a grounding feature configured to electrically ground the suction cup fitting, the at least one arm, and the base.

Abstract: A plurality of scattered laser pulses is received, each scattered laser pulse associated with at least one plurality of respective dwells. A set of 3D velocity information is received, which is derived from photo events detected in information associated with the received plurality of scattered laser pulses. Each dwell in the plurality of dwells is associated with one or more photo events. The 3D velocity information comprises information estimating each respective photo event’s respective position in 6D space during the respective dwell associated with the photo event. For each dwell, its respective photo events are projected into a common reference frame, determined based on the 3D velocity information, to generate a set of motion-compensated point clouds. Each respective motion-compensated point cloud, for each dwell, is registered to the other motion-compensated point clouds in the set, to generate a set of registered point clouds, which are merged into a volumetric image.

Abstract: A computer accesses a plurality of image frames. The computer identifies, within the plurality of image frames, a plurality of vehicle front vehicle back detections. The computer pairs at least a subset of the plurality of vehicle back detections with vehicle front detections. A given vehicle back detection is paired with a given vehicle front detection based on camera angle relative to a predefined axis. The computer assigns, using each of a plurality of pools, a score to each vehicle front detection—vehicle back detection pair, each non-paired vehicle front detection, and each non-paired vehicle back detection. Each pool comprises a data structure representing a scoring mechanism and a set of detections. The computer assigns each detection to a pool that assigned a highest score to that detection. Upon determining that a given pool comprises at least n detections: the computer labels the given pool as representing a specific vehicle.

Abstract: Systems, devices, methods, and computer-readable media for determining a hyper-opinion classification of an object. A method can include receiving data of an object to be classified, and determining, using a neural network, a hyper-opinion classification of the object including an indication of the probabilities of base classes and composite classes that are “or” combinations of proper subsets of the base classes.

Abstract: A process detects anomalies on a controller area network (CAN) bus. An arbitration field in a message on the CAN bus is analyzed, and a data field in the message on the CAN bus is inspected. The process further monitors a frequency of message identifiers that are transmitted across the CAN bus, and determines that an overall bus load crosses a threshold. The process then transmits an alert when the analyzing the arbitration field, the inspecting the data field, the monitoring the frequency, and the determining the overall bus load indicate that an anomaly has occurred on the CAN bus.

Abstract: A photoconductor assembly includes a substrate formed of an undoped and single-crystal semiconductor material that is configured to absorb electromagnetic energy, a plurality of electrodes arranged normal to the substrate, and a power supply that applies a voltage to the electrodes for modulating the electromagnetic energy through the substrate.

Abstract: A scalable brokerless messaging network includes a service mesh implementing a plurality of service nodes in signal communication with one another to exchange a plurality of messages. A control plane is in signal communication with the plurality of service nodes and is configured to register an application service associated with a given service node included in the service mesh. The plurality of service nodes define a messaging middleware layer that establishes several point-to-point connections between each service in the network via transmission control protocol (TCP) sockets.

Abstract: A deroll control system includes an outer housing, a detector configured to capture an image, an annular torsional flexure, at least one drive and a controller configured to control the at least one drive. The annular torsional flexure has a rotatable inner mount surface to which the detector is mounted, a fixed outer mount surface fixed to the outer housing and spaced radially apart from the rotatable inner mount surface, and a flexure region having a plurality of flexures spaced radially between the inner mount surface and the outer mount surface. The at least one drive is coupled to the inner mount surface of the torsional flexure and is configured to cause a counter-rotation of the inner mount surface and the detector about a central rotational axis perpendicular to an image plane to correct a rotation of the image as the detector is capturing the image.

Abstract: A computer architecture includes an application program interface (API). The API does not include a user interface. The computer architecture asynchronously receives into the API data relating to mission plan domains from clients. The data include an identification of vehicles, goals of the vehicles, and threats to the vehicles. The mission plan domains include an air domain, a sea or ocean domain, and a land domain. The computer architecture uses a parallel processing scheme to process the mission plan domains from the clients for determining goal priorities for each of the plurality of vehicles, processing the data using a genetic algorithm and physics models associated with the plurality of vehicles, and transmitting to the vehicles path commands based on the processing of the genetic algorithm.

Abstract: A system first registers a two-dimensional image to targetable three-dimensional data. A user or automated process selects image coordinates of a target within the registered two-dimensional image. The system intersects the image coordinates of the target with the targetable three-dimensional data, thereby generating geodetic coordinates of the target in a point cloud. Error estimates for the geodetic coordinates of the target are generated, and the system stores the geodetic coordinates and associated error of the target in a database for use in downstream exploitation.