Abstract: A geospatial modeling system may include a memory and a processor cooperating therewith to: (a) generate a three-dimensional (3D) geospatial model including geospatial voxels based upon a plurality of geospatial images; (b) select an isolated geospatial image from among the plurality of geospatial images; (c) determine a reference geospatial image from the 3D geospatial model using Artificial Intelligence (AI) and based upon the isolated geospatial image; (d) align the isolated geospatial image and the reference geospatial image to generate a predictively registered image; (e) update the 3D geospatial model based upon the predictively registered image; and (f) iteratively repeat (b)-(e) for successive isolated geospatial images.

Abstract: A sensor receiver may include a Rydberg cell configured to be exposed to a radio frequency (RF) signal, and a probe source configured to generate a plurality of spaced apart pulsed probe beams within the Rydberg cell. The pulsed probe beams may be offset in time from one another. A plurality of excitation sources may be coupled to the Rydberg cell. A detector may be positioned downstream from the Rydberg cell.

Abstract: An optical telescope may include an array of optical lenslets in a common plane, and optical waveguides extending from respective optical lenslets and each having a common optical path delay. Further, at least one optical star coupler may be downstream from the optical waveguides, and an optical detector may be downstream from the at least one optical star coupler and having an optical image formed thereon.

Abstract: An optical switch has latched switch states and includes optical fibers that are laterally joined together to define an optical switching portion. At least one phase change material (PCM) layer is on the optical switching portion so that a phase of the PCM layer determines a latched switch state from among the latched switch states.

Abstract: Systems and methods for operating a communication device. The methods comprise: receiving a signal at the communication device; performing, by the communication device, one or more machine learning algorithms using at least one feature of the signal as an input to generate a plurality of scores (each score representing a likelihood that the signal was modulated using a given modulation type of a plurality of different modulation types); assigning a modulation class to the signal based on the plurality of scores; determining whether a given wireless channel is available based at least on the modulation class assigned to the signal; and selectively using the given wireless channel for communicating signals based on results of the determining.

Abstract: Methods of forming a mirror by bonding a faceplate to a core structure using adhesive formulations that include: (1) a binder comprising 40 to 60 weight % monoaluminum phosphate and 40 to 60 weight % water, the binder constituting 25 to 35 weight % of the adhesive formulation and, (2) a composition that includes a first set of particles having a coefficient of thermal expansion equal to or less than 0.05 ppm/° C. and diameters between 1 to 60 micrometers and a second set of particles having a coefficient of thermal expansion equal to or less than 0.05 ppm/° C. and diameters between 0.05 to 1 micrometers, the first set of particles constituting 80 to 85 weight % of the composition, the second set of particles constituting 15 to 20 weight % of the composition; the composition constituting 65 to 75 weigh % of the adhesive formulation.

Abstract: An interference cancellation system may include a radio frequency (RF) transmitter configured to generate an RF interference signal, and an RF receiver configured to receive an RF input signal that includes a signal of interest component and an RF interference signal component from the RF transmitter. The system may also include an electro-optical (EO) modulator configured to apply an interference cancellation phase shift to the RF interference signal, an optical-to-electrical (OE) converter, and an optical path between the EO modulator and OE converter. The system may also include an RF dispersive delay filter connected to the OE converter, and an RF coupler connected to the RF dispersive delay filter and the RF receiver to subtract the RF interference signal component from the RF input signal thereby producing the signal of interest component.

Abstract: An underwater device may include a waterproof housing defining a dry cavity and having a nonferrous switch interface wall. The underwater device may include a rotary switch within the dry cavity and including a switch body, and a switch shaft extending outwardly from the switch body. The underwater device may include a first magnetic body within the dry cavity and coupled between the switch shaft and the nonferrous switch interface wall, and a second magnetic body external from the waterproof housing and adjacent the nonferrous switch interface wall in alignment with the first magnetic body so that rotation of the second magnetic body rotates the switch shaft. Each of the first magnetic body and the second magnetic body may include a permanent magnet.

Abstract: A method for making a radiation shield includes generating a three-dimensional (3D) model for a metal body to serve as a radiation shield based upon a predetermined radiation stopping thickness for the metal and a predetermined strength based upon the metal and a pattern of voids therein. The method includes performing fused filament deposition to create the metal body having the pattern of voids therein.

Abstract: An optical assembly may include a base having a body defining a base mating feature surface. Optical modules are arranged in side-by-side relation on the base and in optical communication with each other. Each optical module includes a housing that is commonly-shaped with other housings. Each housing has a bottom wall defining a module mating feature surface coupled with a respective area of the base mating feature surface and at least one sidewall with an optical communication opening aligned with the at least one optical communication opening of an adjacent housing. A respective optical device is within each housing.

Abstract: A system may include a memory and a processor cooperating therewith to obtain geospatially registered first and second interferometric synthetic aperture radar (IFSAR) images of a geographic area having respective first and second actual grazing angles with a difference therebetween, and convert the first IFSAR image to a modified first IFSAR image having a modified first grazing angle based upon known terrain elevation data for the geographic area. The modified first grazing angle may be closer to the second actual grazing angle than the first actual grazing angle. The processor may further recover updated terrain elevation data for the geographic area based upon the modified first IFSAR image and the second IFSAR image.

Abstract: Systems and methods for operating a circuit. The methods comprise: using a first thermal responsive device to connect a first power source between first and second terminals to which an external load can be connected to the circuit; using a second thermal responsive device to cause a thermal unresponsive device to be in an open circuit condition; and performing operations responsive to a temperature of a surrounding environment exceeding a given temperature value. The operations include: disconnecting the first power source from at least the first terminal by transitioning the first thermal responsive device from a closed state to an open state; and connecting a second power source between the first and second terminals by transitioning the thermal unresponsive device from the open circuit condition to a closed circuit condition using the second thermal responsive device.

Abstract: Systems and methods for applying solder to a pin. The methods comprising: disposing a given amount of solder on a non-wettable surface of a planar substrate; aligning the pin with the solder disposed on the non-wettable surface of the planar substrate; inserting the pin in the solder; and/or performing a reflow process to cause the solder to transfer from the planar substrate to the pin.

Abstract: An environmental emission monitoring system may include satellites configured to sense GHG emissions data for an AOI, and a server. The server may be configured to obtain the sensed GHG emissions data from the satellites, obtain geospatial positions of stationary GHG emitting point sources within the AOI, and generate expected stationary GHG emission data for the stationary GHG emitting point sources within the AOI and based upon the geospatial positions. The server may also be configured to obtain geospatial path data for GHG emitting vehicles moving within the AOI, generate expected vehicle GHG emission data for the GHG emitting vehicles moving within the AOI and based on the geospatial path data, and compare a sum of the expected stationary GHG emission data and expected vehicle GHG emission data with the sensed GHG emissions data to identify any stationary GHG emitting point source and any GHG emitting vehicle outside of a respective GHG emission threshold.

Abstract: Systems (100) and methods (600) for providing a product with a radiation mitigation feature. The methods comprise: obtaining a composite base layer formed of a fiber-reinforced material; and performing a deposition process to dispose a first coating layer on the composite base layer so as to form the product with a radiation barrier, the first coating layer comprising 35% by mass or less of a metal constituent, at least 65% by mass of a germanium constituent, a zero or substantially zero coating stress, and/or an overall thickness between 2 microns and 8 microns.

Abstract: The present invention is directed toward an additive manufacturing method for manufacturing silica-based structures that have a low linear cure shrinkage percentage and an ultra-low coefficient of thermal expansion. The structure may be constructed with a powder mixture that contains at least a first set of silica-based particles that are spherical and that have a first size, and a second set of submicron silica-based particles that are jagged, spherical, or both jagged and spherical. The silica-based powder mixture may be combined with a surfactant in order to create a slurry that can be used to create a 3D printed structure that has a low linear cure shrinkage percentage and an ultra-low coefficient of thermal expansion.

Abstract: Systems and methods for controlling operations of a computer system. The methods comprises: collecting, by at least one computing device, information about events occurring in the computer system; performing automated ontogenesis operations by the at least one computing device using the collected information to determine a context of a given situation associated with the computer system, define parameters for a plurality of different sets of actions that could occur in the context of the given situation, and simulate the sets of actions to generate predicted consequences resulting from the performance of certain behaviors by nodes of the computer system; and using the parameters of at least one of the predicted consequences to control operations of the computer system.

Abstract: A docking system may include a first device and a second device moveable relative to the first device. The first device may include a docking station, a first optical transceiver, and a first controller configured to operate the first optical transceiver to receive an optical beacon signal, and generate and transmit an optical guidance data signal based on the optical beacon signal. The second device may also include a propulsion system, and a second optical transceiver configured to transmit the optical beacon signal toward the first optical transceiver and receive the optical guidance data signal from the first optical transceiver. The second device may also include a second controller configured to operate the propulsion system based upon the optical guidance data signal to dock the second device to the docking station of the first device.

Abstract: A communications device may include an RF device, and an antenna. The antenna may include a conductive ground plane, an elongate support extending from the conductive ground plane, and a helically wound conductive strip carried by the elongate support. The communications device may have a coaxial cable coupling the RF device and the antenna. The coaxial cable may include an inner conductor and an outer conductor surrounding the inner conductor. The outer conductor may be coupled to the conductive ground plane and the inner conductor may extend through the conductive ground plane and be coupled to a proximal end of the helically wound conductive strip.

Abstract: A module is retained in a slot of an electronics chassis. A clearance space is provided for receiving the module in a slot of the electronics chassis by controlling an internal pressure of a bellows. The bellows forms a part of a retainer that is disposed on an elongated rail extending along a length of the slot. The bellows defines an internal bellows capsule which contains a fluid. Once the module has been inserted in the slot, the module is secured with the retainer by further controlling the internal pressure of the bellows to exert a force on the module.