Abstract: Systems and methods are provided for point cloud compression. An exemplary method includes: receiving point cloud data; quantizing the point cloud data to remove noise to produce quantized point cloud data; generating, using the quantized point cloud data, a plurality of multi-level tiles; performing reordering within the multi-level tiles to optimize a compression rate producing a plurality of reordered multi-level tiles; bit packing the reordered multi-level tiles minimizing bits required to store per tile header data producing a bit packed multi-level tile data; and performing additional compression on the bit-packed multi-level tile data using a first compression algorithm.

Abstract: A field effect transistor having a field plate structure for shaping an electric field in a region between the gate and the drain, such field plate structure having: a dielectric layer disposed on gate and on the surface of the semiconductor in the region between gate and the drain; and electric charge disposed in portions of the dielectric layer, a portion of such charge being disposed in the dielectric layer over an upper surface of the gate and another portion of the change extending from the upper surface of the gate into the region between gate and the drain; and wherein the electric charge solely produces the electric field.

Abstract: A method of coupling polymeric components utilizing electromagnetic energy is disclosed. The method can include obtaining a first component having a first coupling portion, a second component having a second coupling portion, and a susceptor. The method can also include mating the first and second components such that the susceptor is proximate the first and second coupling portions. In addition, the method can include applying electromagnetic energy to the susceptor. The susceptor can convert the electromagnetic energy to heat, which can melt portions of the first and second coupling portions about the susceptor to couple the first and second components to one another upon solidification.

Abstract: A system and method is provided that captures command and control string data during an unmanned vehicle operation. The control string includes user inputs (e.g., mouse inputs, keyboard inputs, etc.) and display outputs (i.e., data displaying to the user via displays). The control string data is captured and stored during the sortie (i.e., a flight) and the control string is preserved (also referred to as impounded) when a mishap occurred during the sortie.

Abstract: A capacitor discharge circuit for discharging a capacitor to a discharge load. The discharge circuity includes current level sensing circuitry for producing a control signal circuity response to current passing to the discharge load. The discharge circuity modulates a level of current passing from the capacitor to the discharge load over time between predetermined ranges of current levels in response to the control signal.

Abstract: Systems and methods are provided for processing and storing remote sensing data. An exemplary method includes collecting information regarding a target based on an objective; receiving the information regarding the target; temporally storing the information regarding the target; deriving, using the information regarding the target, a first data fingerprint based on the objective; providing a library configured to store at least one data fingerprint; determining whether the library includes a second data fingerprint having the same objective; upon determining that the library includes the second data fingerprint, determining whether there is sufficient difference between the first data fingerprint and the second data fingerprint; and in response to determining there is sufficient difference between the first data fingerprint and the second data fingerprint, storing the information regarding the target in a remote sensing platform.

Abstract: A system and method are provided for delivering orbit and clock corrections for Global Navigation Satellite Systems (GNSS) having: (1) reduced orbit and clock discontinuities when changes in ephemeris message from a satellite occur; (2) reduced quantization error by quantifying quantization error by fitting data within the constraints of the output message to prevent broadcast of large errors; and (3) reduced potential errors caused by old but active data.

Abstract: An arbor press includes a limiter for limiting load and/or travel of a ram used to press on an object. The ram includes a pair of pieces, a shaft and a sleeve, which are capable of relative translation, modulated by the spring. The spring may be preloaded, and configured to prevent overloading of the object, by limiting the transmission of force through the ram. The ram may also be configured to limit travel of the ram. The arbor press may include gearing to translate rotational movement of a handle to translational movement of the ram. The gearing may include a rack that is part of or is coupled to the shaft, and a pinion that is connected to the handle. Parts of the arbor press may be enclosed in a housing, to contain debris from metal-to-metal sliding in the arbor press, facilitating use in clean rooms.

Abstract: An electrical device includes an aluminum nitride passivation layer for a mercury cadmium telluride (Hg1-xCdxTe) (MCT) semiconductor layer of the device. The AlN passivation layer may be an un-textured amorphous-to-polycrystalline film that is deposited onto the surface of the MCT in its as-grown state, or overlying the MCT after the MCT surface has been pre-treated or partially passivated, in this way fully passivating the MCT. The AlN passivation layer may have a coefficient of thermal expansion (CTE) that closely matches the CTE of the MCT layer, thereby reducing strain at an interface to the MCT. The AlN passivation layer may be formed with a neutral inherent (residual) stress, provide mechanical rigidity, and chemical resistance to protect the MCT.

Abstract: A camera assembly includes a housing inside of which components are maintained at a cryogenic temperature. The components maintained at cryogenic temperature include a detector that is mounted on an integrated circuit, which in turn is mounted on a platform, such as a ceramic platform, which includes electrical connections for the integrated circuit. The camera assembly also includes one or more subplatforms, maintained above the cryogenic temperature, such as ambient temperature, that receive electrical inputs from outside the housing, and make electrical connections to the platform. The connections may be made from the one or more subplatforms, through openings in the platform and/or outside one or more outer edges of the platform. The assembly may include covers of exposed parts of the one or more subplatforms, to facilitate thermal isolation between the interior of the assembly (at cryogenic temperature) and the one or more subplatforms (above cryogenic temperature).

Abstract: A propulsion system includes multiple solid rocket motors that are activated by a single initiator. The rocket motors act in parallel, providing thrust in a single direction. The initiator activates an ignition charge that is in or operatively coupled to a plenum that transports hot gasses from the ignition charge to the rockets to be ignited. The plenum may be an annular plenum, which may be located in an annular manifold. The plenum may be an unchoked plenum, allowing flow of hot gasses without choking. The plenum may be lined with an insulator material. A cover may be used to cover the plenum, and also to receive the rocket motors. The rocket motors may be solid-fuel rocket motors. The individual rocket motors may have separate ignition booster charges coupled to the plenum, which are ignited by the ignition charge and which in turn ignite the propellant grains.

Abstract: A scan mirror reflectivity calibration device is provided for monitoring and calibration of a rotating two-sided scan mirror. The scan mirror reflectivity calibration device can comprise at least one light source assembly operable to direct light onto a back side of a rotating two-sided scan mirror. The at least one light source assembly can be mounted outside a swept volume of the rotating two-sided scan mirror. The scan mirror reflectivity calibration device further comprises at least one detector assembly operable to detect light that is emitted from the at least one light source assembly and is reflected off of the back side of the rotating two-sided scan mirror. The at least one detector assembly can be mounted outside the swept volume of the rotating two-sided scan mirror.

Abstract: A fluid system and a blind-mate fluid fitting can be operable to allow for mating fluid system components even in the presence of angular, radial, and/or axial port misalignment. The blind-mate fluid fitting includes a shoulder and fitting portion extending from one side of the shoulder. The fitting portion defines a central fitting axis and is operable to inserted into a fluid port of a component. The fluid port defines a central port axis. The fitting portion includes a sealing portion that is operable to seal against the fluid port when the central fitting axis is positioned at a zero angle and at least one of a plurality of different non-zero angles relative to the central port axis.

Abstract: A rocket booster has an annular shape, with a casing defining an annular space therewithin, and a solid rocket fuel in the annular spacing. The casing may itself at least in part define an annular gap that functions as a nozzle for the rocket booster, with protruding tabs on the casing aiding in maintaining a uniform height of the annular gap. The rocket booster may be mechanically coupled to an object protruding from the back of a fuselage of a flight vehicle, such as a missile. For example, the rocket booster may be placed around an aft turbojet nozzle of the flight vehicle. This allows the rocket booster to be used in situations where primary propulsion must be running both before and after (and perhaps during) the firing of the rocket booster.

Abstract: A method includes rotating a mirror assembly in a first direction using an actuator. The mirror assembly is rotationally coupled to a base and includes a mirror. A first end of the mirror is rotationally coupled to the base, and a second end of the mirror is not supported by or attached to another structure. The method also includes rotating a reaction inertia assembly in a second direction opposite the first direction using the actuator. The reaction inertia assembly is rotationally coupled to the base. The method further include restricting movement of the mirror assembly and the reaction inertia assembly in multiple degrees of freedom using multiple flexures.

Abstract: A configurable acquisition engine for direct sequence (DS) spread spectrum (SS) is provided that is reconfigurable without increasing memory size for several use cases having different time-frequency uncertainties. The acquisition engine utilizes a frequency-domain decimation filter to reduce the number of output frequency points while still utilizing information from all frequency bins.

Abstract: A Cu3Sn electrical interconnect and method of making same in an electrical device, such as for hybrid bond 3D-integration of the electrical device with one or more other electrical devices. The method of forming the Cu3Sn electrical interconnect includes: depositing a Sn layer in the via hole; depositing a Cu layer atop and in contact with the Sn layer; and heating the Sn layer and the Cu layer such that the Sn and Cu layers diffuse together to form a Cu3Sn interconnect in the via hole. During the heating, a diffusion front between the Sn and Cu layers moves in a direction toward the Cu layer as initially deposited, such that any remaining Cu layer or any voids formed during the diffusion are at an upper region of the formed Cu3Sn interconnect in the via hole, thereby allowing such voids or remaining material to be easily removed.

Abstract: A wave scanning optic is formed to have an angular reflectance or refraction that produces a uniform line scan during rotation of the optic, such that the optic is operable for seamless multidirectional scanning. The wave scanning optic includes a rotatable body defining a central axis of rotation about which the rotatable body rotates during scanning, and an optical surface formed on the rotatable body and having a wavy pattern defined by one or more lobes that protrude outwardly from the rotatable body. The optical surface has a continuous pattern with an angular frequency that varies along a radial distance from the central axis of rotation. The optical surface is configured to emit and/or receive light in one or more incident directions.

Abstract: Embodiments of a single-chip ScAIN tunable filter bank include a plurality of switching elements, and a plurality of channel filters integrated on a monolithic platform. The monolithic platform may comprise a single crystal base and each of the switching elements may comprise at least one of a scandium aluminum nitride (ScAIN) or other Group III-Nitride transistor structure fabricated on the single crystal base. In these embodiments, each channel filter comprises a multi-layered ScAIN structure comprising one or more a single-crystal epitaxial ScAIN layers fabricated on the single crystal base. The ScAIN layers for each channel filter may be based on desired frequency characteristics of an associated one of the RF channels.

Abstract: Discussed herein are devices, systems, and methods for zero trust endpoint network security. A method can include providing, by a ZTENS device, first data indicating the ZTENS device is communicatively coupled to a compute device, providing, by the ZTENS device and over a first communication channel through a web application of the compute device, one or more URLs, receiving, by the ZTENS device and over the first communication channel, data indicating a URL of the one or more URLs selected by a user of the compute device through the web application, communicating, by the ZTENS device a request for website data of a website associated with the selected URL, and receiving, by the ZTENS device, the website data and providing the website data to the compute device.