Abstract: Discussed herein are devices, systems, and methods for detecting anomalous or malicious processes based on a network flow data. A method for network intrusion detection, the method comprising receiving a network flow data, implementing a topological data analysis (TDA) algorithm to identify respective birth and death of homological classes to which the network flow data maps, appending the respective (birth, death) pairs along with additional TDA-based features to a feature space resulting in an augmented feature space, and determining, using a machine learning algorithm the operates on the augmented feature space as input, whether the network flow data is associated with a network intrusion.

Abstract: An apparatus includes a glass body having a first face and a second face on opposing ends and defining a longitudinal axis between the opposing ends. The glass body includes multiple planar exterior surfaces, each extending continuously from the first face to the second face. The glass body also includes an interior surface surrounding an aperture, the aperture extending longitudinally from the first face to the second face. The glass body further includes a plurality of holes surrounding the aperture, where the holes are disposed within the glass body and extend longitudinally from the first face to the second face. The holes are configured to receive and direct a gas through the holes to exchange heat between the gas and the glass body.

Abstract: A processor unit includes a cooling unit for dedicated cooling of a processor device that includes at least one processor. The cooling unit includes a pumped liquid loop that circulates a working fluid to remove heat from the processor device, and to transmit that heat to a passive radiator thermally coupled to the liquid loop, to radiate the heat to an external environment. The cooling unit may be used in conjunction with additional cooling of a board, such as a printed wiring board, to which the processor device is operatively and thermally coupled. The cooling unit may be part of a spacecraft, and may enable use of high-powered processing devices as part of such spacecraft.

Abstract: A structural joint is provided that includes a first component, a second component, an isolator and a fastener. The isolator is engaged with and between the first component and the second component. The isolator includes a plurality of internal cavities between the first component and the second component. The fastener projects out of the first component, through the isolator and into the second component.

Abstract: A frangible detent pin comprising a base a pin head and an elastic member. The base is configured to be secured within a bore. The pin head and the base are interconnected through a frangible connection. The elastic member is configured to bias the pin head away from the base. The frangible detent pin has a rigid stage in which the pin head is rigidly positioned relative to the base and a spring-loaded stage in which the pin head is moveable relative to the base under a compression load between pin head and the base. The frangible detent pin is configured to transition from the rigid stage to the spring-loaded stage in response to the compression load exceeding a predetermined threshold sufficient to cause the frangible connection to fail.

Abstract: An interconnect is provided that can comprise a recess formed in a body where the recess comprises an axial end wall and a side wall extending from the axial end wall. The interconnect can also comprise a distributed metallized layer disposed on the axial end wall and the side wall and a conductive compliant (CC) plug disposed within the recess to interface with the metallized layer. The CC plug can be configured to establish an electrical connection between a conductive pad disposed on the recess and a male conductive element inserted into the recess via the metallized layer.

Abstract: An apparatus includes a photonic integrated circuit having multiple cells. Each cell includes first and second antenna elements, where the first antenna element is configured to receive a portion of optical energy and the second antenna element is configured to transmit the portion of the optical energy. Each cell also includes a signal pathway configured to transport the portion of the optical energy between the first and second antenna elements. Each cell further includes a phase modulator configured to adjust a phase of the portion of the optical energy transported over the signal pathway. The apparatus also includes multiple wavefront sensors configured to measure wavefront errors in the portions of the optical energy. The apparatus further includes multiple phase controllers configured to adjust operation of the phase modulators in order to at least partially reduce the wavefront errors.

Abstract: An apparatus for and a method of a coaxial-to-waveguide power combiner/divider. The apparatus includes a single-fin coaxial-to-waveguide power combiner/divider, including a waveguide having one open end, one closed end, and two sides that are broader than two other sides; two fins in a plane within the waveguide, wherein the plane is configured to be parallel to the broader sides of the waveguide; and at least one coaxial input joined to each of the two fins. Signals may be applied to the at least one coaxial input joined to each of the two fins are in phase with each other, and a number of the at least one coaxial input joined to each of the two fins may include one of a same number and a different number.

Abstract: A physically unclonable function (PUF) device is provided, comprising an excitation source providing light for exciting quantum dots (QDs); a first layer of a material having contained therein a first random distribution of first QDs of a first type that are configured to generate a first color in response to being excited by the excitation source; a second layer of a second material having contained therein a second random distribution of second QDs of a second type that are configured to generate a second color, different from the first color, in response to being excited by the first excitation source, and a detector fixedly attached to one of the first and second layers and configured for detecting a pattern of light emitted by at least one of the first QDs and the second QDs and for providing an output indicative of the detected pattern.

Abstract: A method includes generating output code based on input code using a compiler or translator and providing the output code to one or more platforms for execution. The method also includes receiving feedback associated with the execution of the output code, where the feedback identifies at least one of: one or more failures during the execution of the output code and one or more performance characteristics of the execution of the output code. The method further includes modifying the compiler or translator based on the feedback and generating additional output code using the modified compiler or translator.

Abstract: A LADOR circuit is in signal communication with a pixel array. The LADOR circuit is configured to generate an integrator reset voltage based on a resistance of the at least one heated bolometer pixel, and to detect laser energy incident on the at least one heated bolometer pixel based on a comparison between the integrator reset voltage and an input threshold voltage (Vthreshold).

Abstract: An apparatus, and method of operating the same locates and tracks a target in four dimensions across a FPA using GMAPD data. The apparatus includes a receiver and a processor arranged to generate a video filter array, the video filter array including a set of estimated velocity pixel coordinate components arranged in a linear data set. The processor generates detected photo events based on received scattered laser pulses, filters the detected photo events by linearly indexing each of the plurality of detected photo events based on, for each detected photo event, a vertical position in the focal plane array, a horizontal position in the focal plane array, a frame number, and the dimensions of the focal-plane array. The processor maps each detected photo event to the set of estimated velocity pixel coordinate components, and generates a motion-compensated image associated with the mapped detected photo events in a filtered two-dimensional array.

Abstract: Systems and methods are provided for modeling non-resolved object detection performance of sensor systems. An exemplary method includes: receiving a first data from or associated with a plurality of sensors; creating, using the first data, a plurality of models for each of the sensors; calculating, using the models and the first data, signal-to-ratio (SNR) values for the sensors against a target; creating, using the SNR values, a plurality of probability of detection models for each of the sensors, wherein one of the probability of detection models is a quantum illumination probability of detection model; and determining, using the detection models, non-resolved target detection performance of each of the sensors.

Abstract: An interactive orbital trajectory prediction system including a processor arranged to simultaneously display: i) a surface of the first primary body including the relative predicted trajectory of the object, ii) a surface of the second primary body including the relative predicted trajectory of the object, and iii) the barycenter of the two primary bodies, and the trajectory of the object with respect to the barycentric reference frame. The system includes an input device arranged to receive a user selection of a first sensor module of a plurality of sensor modules used to predict the trajectory of the object orbiting the primary body. The processor, in response to the user selection of the first sensor module, predicts the flight path of the object based on the first sensor module.

Abstract: An apparatus, and method of operating the same processes of LADAR data including iterating back and forth between target detection in a 2-D array having range and range rate dimension, and a 4-D array having azimuth, azimuthal velocity, elevation, & elevation velocity dimensions. The apparatus includes a receiver and a processor arranged to generate photo events including target signal photo events and background photo events, transform the photo events into the 2-D target tracking array including range and range-rate parameters and tag photo events determined to be 2-D target signal photo events. The processor transforms tagged photo events into the 4-D target and tags photo events determined to be 4-D target signal photo events.

Abstract: Interconnects and methods of fabricating a plurality of interconnects. The method includes depositing a conformal layer of a plating base in each of a plurality of vias, and depositing a photoresist on two portions of a surface of the plating base outside and above the plurality of vias. The method also includes depositing a plating metal over the plating base in each of the plurality of vias, the depositing resulting in each of the plurality of vias being completely filled or incompletely filled, performing a chemical mechanical planarization (CMP), and performing metrology to determine if any of the plurality of vias is incompletely filled following the depositing the plating metal. A second iteration of the depositing the plating metal over the plating base is performed in each of the plurality of vias based on determining that at least one of the plurality of vias is incompletely filled.

Abstract: A shock isolator is arranged between two automated coupler parts in a vibration testing unit. When the coupler parts are engaged and coupled during vibration testing of a component, the shock isolator is disabled, and when the coupler parts are disengaged and decoupled after vibration testing, the shock isolator is activated to absorb excess shock energy and prevent shock transfer between the coupler parts that would damage the test component. The shock isolator includes a bushing that is inserted in a lower part of the two automated coupler parts and a compressive fit rod that is press-fit into the bushing. The bushing has a chamfered volume and the compressive fit rod has a corresponding compressible volume that is displaced into the chamfered volume to disable the shock isolator. After vibration testing, the compressive fit rod is expandable to a regular shape to activate the shock isolator.

Abstract: A linear actuation system includes a pin pivotably coupled to an output rod of a linear motion actuator and a rotatable output shaft that includes a bushing therein. The pin can be configured to slide in and out of the bushing in response to movement of the linear motion actuator. The linear motion actuator and the output shaft can be arranged such that travel of the pin in the bushing causes rotation of the output shaft.

Abstract: A nanocomposite optical ceramic (NCOC) material includes a plurality of coated (core-shell) nanoparticles having nanoparticles of a first material coated with a coating of a second material. The first material and the second material are mutually insoluble and each have a transmissivity of at least 80% for an intended wavelength. The first material and the second material have a difference in index of refraction of less than 25%. The first material and second material have grins with a diameter of less than 1/20th the intended wavelength. The coating of the second material on the nanoparticles of the first material is up to 50 nm thick. The NCOC contains no more than 0.01% voids per unit volume.

Abstract: Described herein is an apparatus and a method for a low-profile, circularly polarized antenna. The antenna comprises a first substrate having a first side and a second side; an antenna element on the first side of the first substrate; a first conductor on the second side of the first substrate proximity coupled to the antenna element; a second conductor on the second side of the first substrate proximity coupled to the antenna element and ±90 degrees out of phase with the first conductor; a second substrate under the first substrate having a least one air gap therein under the antenna element; a third substrate under the second substrate having a first side and a second side; and an electrical ground plane on the second side of the third substrate.