Abstract: A system and method for managing acknowledgments and retransmissions in a distributed manner in a MANET with 2-hop clustering structure. Clusterheads are in charge of assuring delivery of flooding packets to their members. After receiving acknowledgments from associated nodes in the cluster, and clusterheads perform retransmission when necessary with a list of acknowledging nodes. The non-clusterhead nodes receive the retransmissions and determine if that node's acknowledgment was received based on a list of node IDs included in the retransmission. If the node ID is not listed, the node resends the acknowledgment. The process continues until all acknowledgments are received and listed.

Abstract: A system and method for detecting failures in a single-phase AC motor is disclosed. After a startup sequence, the motor is unpowered and a measurement is taken across terminals in the motor to detect a signal from residual magnetism in the iron core of the rotor. If the rotor was successfully started, the signal will be above a predetermined threshold. The signal may be measured across either a main stator winding or a start stator winding. Where the signal does not exceed the predetermined threshold, the startup sequence may be re-initiated and/or a failure message may be sent to an operator.

Abstract: A system for indicating an unmanned aerial vehicle (UAV) operational area is disclosed. The system includes a database that stores the location of a plurality of UAS operational areas. The system further includes a navigation system and a warning unit communicatively linked to the navigation system and the database. The warning unit includes one or more processors and non-volatile memory communicatively coupled to the one or more processors. The non-volatile memory stores instructions that instruct the one or more processors to: receive position data from the navigation system and UAV data from the data base corresponding to the position data; compare the position data to the UAV data, and process a first image indicating UAV operational areas that are adjacent to an aircraft or a flight path of the aircraft, wherein the first image is displayed on an aircraft display.

Abstract: An electronic device fabrication system may include, but is not limited to: a conductive material deposition device configured for deposition of a conductive material; at least one electronic device substrate configured to receive deposited conductive material; and at least one mask configured to selectively transmit the conductive material to the electronic device substrate, wherein the at least one mask configured to selectively transmit the conductive material to the electronic device substrate includes: at least a first side disposed at an angle relative to an adjacent second side.

Abstract: A half-rhombic antenna includes an addressable switch at the apex. The addressable switch is opened or closed base on the operating frequency of the antenna. The addressable switch is open when operating at odd multiples of the lowest frequency and closed when operating at even multiples of the lowest frequency. The feedpoint includes a tuning element to adjust impedance within a range defined by the operating range of the switched antenna.

Abstract: A light projection apparatus is provided comprising: a source of light; a switchable grating on a first substrate; and a diffractive optical element. Light is diffracted at least once by the switchable grating and is diffracted at least once by the DOE.

Abstract: Systems and methods provide an antenna array with separately fed subarrays. The systems and methods provide optimized or improved physical embodiments of each sub-banded subarray in terms of radiating element type and physical implementation, radio frequency integrated circuit (RFIC) technology choice, RFIC packaging and interconnect implementation, and/or intra-subarray feed typology choice and implementation. The antenna array can include first elements within a first distance range from a point in a surface associated with the antenna array and configured for first signals in a first frequency range, and second elements within a second distance range from the point and configured for second signals in a second frequency range. The antenna system also can include an interconnect system comprising a first multichip module and a second multichip module region.

Abstract: A high-speed light detection and ranging (LIDAR) system includes one or more arrays of transmitting laser diodes (TLD) fixed to a mobile platform; multiple such arrays may be arranged around the mobile platform instead of a single array rotating at high speeds. Each TLD of the array transmits, in sequence, a light pulse at a transmit time to illuminate a particular azimuth and elevation. One or more receiving photodiodes (RPD) are fixed to the mobile platform and configured to receive the reflected returns of the transmitted laser pulses. Signal processors allow the LIDAR system to “see” at high resolution by determining distance and directional information and generating point clouds based on the returned pulses.

Abstract: A system is disclosed, in accordance with one or more embodiments of the present disclosure. In one embodiment, the system includes a plurality of image capture devices, a controller communicatively coupled to the plurality of image capture devices, wherein the controller includes one or more processors configured to receive a plurality of reference images including one or more source objects, identify the one or more source objects, determine one or more gestures indicative of one or more control signals of the one or more source objects, determine the one or more control signals; and provide the one or more control signals.

Abstract: A display having a variably controlled backlight and/or driver is disclosed. The backlight includes a first light source that emits light within a first spectral power distribution and has a first radiant power output. A second light source emits light within a second spectral power distribution matched to an optical filter for producing a perceived chromaticity and luminosity matching the perceived display appearance without the optical filter.

Abstract: A receiver for null steering in a navigation or positioning system includes a controlled reception pattern antenna (CRPA) comprising elements, a switch array coupled to the elements of the CRPA, and a receiver circuit. The receiver circuit is configured to receive an incoming radio frequency (RF) satellite signal from the switch array. The receiver circuit is configured to control the switch array to receive digitized samples, wherein each sample is in a respective time interval for each element of the CRPA elements. The receiver circuit is configured to apply a weight value to each sample and sum the samples to provide a null steering beam.

Abstract: A mobile platform communication system includes one or more HF antennas disposed in the surface of the mobile platform. The HF antenna may comprise one or more mesh screens. Alternatively, or in addition, the HF antennas may comprise characteristic mode transducers to excite metallic features on the mobile platform skin. The mobile platform skin includes a lightning strike protection layer that is disposed within the mobile platform skin around in internal surface of the antenna such that the antenna does not distend the mobile platform skin and increase drag.

Abstract: A system and method for Automated Aerial Refueling (AAR) may combine unrelated capabilities to provide a high integrity solution to boom manipulation and insertion to couple with a receiver receptacle. Precise positioning systems on each aircraft coupled via data link provide a high integrity relative positioning solution generating a requisite integrity for positioning yet insufficient for boom insertion. High definition cameras onboard the tanker provide multi-wavelength remote vision digital images used to identify the boom fitting as well as the receptacle. Combined with boom position information from the tanker, the system determines pixel position inputs from stereo digital images to precisely identify the boom and receptacle and manipulate the boom to insert the boom fitting into the receptacle. Constant camera generated feedback and updated relative positioning alerts the system and disconnects the boom should the receiver aircraft stray outside the proper position.

Abstract: An adjustable brew head linkage includes a brew head linkage element, a handle linkage element, and an adjusting element between the brew head linkage element and the handle linkage element to smoothly increase and decrease the distance between the brew head linkage element and the handle linkage element to alter the size of a corresponding brew chamber to accommodate various brew pods. The brew head linkage element and/or handle linkage element may include a threaded portion to engage the adjusting element. Turning the adjusting element causes deflection. Threaded portions may have opposite handedness or different pitches. A secondary brew head linkage locking element provides friction to lock the adjusting element in place. The adjusting element increases and decreases the distance between the head linkage and the handle linkage in increments smaller than 0.178 millimeters ( 7/1000 inches).

Abstract: A system and method for correlating hazard data includes defining flight corridors according to hazard thresholds based on criticality weightings derived from multiple sources, and incorporating multiple hazard types. The flight corridors are render in a visually distinct way according to the corresponding hazard threshold. An autonomous aircraft determines an executable flight path within a flight corridor having a maximum allowable hazard threshold.

Abstract: A system and method. The system may include an eye tracking system. The eye tracking system may include a short-wave infrared (SWIR) light source configured to emit SWIR light at between 900 nanometers (nm) and 1,700 nm wavelength onto an environment, a SWIR sensitive image sensor configured to capture images of the environment illuminated by the SWIR light source, and a processor communicatively coupled to the SWIR sensitive image sensor. The processor may be configured to: receive image data from the SWIR sensitive image sensor; track movement of an eye of a user based on the image data; and output eye tracking system data indicative of the tracked movement of the eye of the user.

Abstract: A laminating machine and process for applying an optically clear adhesive film to a glass substrate includes a porous belt assembly with a plurality of vacuum pumps. The vacuum pumps define different, separately adjustable vacuum zones on the surface of the porous belt. The porous belt is driven linearly so that an optically clear adhesive does not move relative to the porous belt, but does move relative to the table, allowing the adhesive to be controlled to a compressive, neutral, or tensile state while being nip-rolled to the substrate. Since there is no motion of the film relative to the belt, scratching, stretch elongation, dimensional errors, and other slip induced damage is eliminated.

Abstract: A radio receiver system configured to remove click noise from a demodulated signal is disclosed. The radio receiver system may employ digital demodulation or analog demodulation. The radio receiver system may be configured to determine measures of a statistical distribution of amplitudes of the demodulated signal, and thresholds for limiting the demodulated signal based on the measures of the statistical distribution of amplitudes. Portions of the demodulated signal exceeding the thresholds are either soft limited or hard limited.

Abstract: A vocoder system incorporates situational awareness data into unused bits in the trailing bytes of the vocoder frames by dividing the situational awareness data according to the number of known blank bits in each vocoder frame and incorporating the data, in order, such that the receiving system can extract and reconstruct the situational awareness data. Synchronization signals of predefined bit streams are incorporated to allow the receiving system to more accurately identify situational awareness bits in the trailing byte.

Abstract: A system may include a space suit helmet. The space suit helmet may include a surface structure, an inner surface structure, and a waveguide display. The inner surface structure may be configured to maintain an oxygenated environment within an interior cavity of the space suit helmet, wherein a user is able to see through the inner surface structure and the surface structure. The waveguide display may be implemented at least one of in or on the space suit helmet. The waveguide display may include a waveguide and an optical system configured to project images at least through the waveguide to be displayed to the user.