Abstract: An optical display includes a waveguide comprising an input coupler, first expansion grating, second expansion grating, and output coupler. The input coupler is configured to couple image light from an image source. The first expansion grating is configured to receive the image light, expand the image light along a first axis and away from a first direction at a first angle of expansion, and direct the image light out of the first expansion grating in a second direction different than the first direction. The second expansion grating is configured to receive the image light, to expand the image light along the first axis and towards the first direction at a second angle of expansion, and direct the image light out of the first expansion grating in the second direction.

Abstract: A system is disclosed herein, including a cushion including a plurality of tactors and a plurality of air bladders disposed adjacent the plurality of tactors, a pump assembly operably connected to the plurality of bladders, a processor, and a memory operatively coupled to the processor. The memory includes instructions stored thereon that, when executed by the processor, cause the processor to determine an inflation sequence for the plurality of air bladders, determine a deflation sequence for the plurality of air bladders, output commands to the pump assembly corresponding to the inflation sequence and the deflation sequence, and output vibrate commands to the plurality of tactors.

Abstract: A compact see-through head up display (HUD) for a vehicle such as an aircraft implemented as a fixed display positionable forward of a user (e.g., pilot), a head worn display, a helmet mounted display, etc. The HUD may be provided as an integrated stack including a see-through emissive display positioned between a predetermined number of first and second optical pairings each including a waveplate coupled with a polarization directed lens. The first optical pairing is configured to collimate display light emitted from a display side of the see-through emissive display and the second optical pairing provides an equal and opposite focal vergence effect to counter the focal vergence effect of the first optical pairing such that the see-through emissive display does not affect the focal distance of the outside environment as viewed through the see-through emissive display.

Abstract: A system is disclosed for Doppler nulling configured for security. The system may include a receiver or transmitter node. The receiver or transmitter node may include a communications interface with an antenna element and a controller. The controller may include one or more processors and have information of own node velocity and own node orientation relative to a common reference frame. The receiver or transmitter node may be time synchronized to apply Doppler corrections to signals, the Doppler corrections associated with the receiver or transmitter node's own motions relative to the common reference frame, the Doppler corrections applied using Doppler null steering along Null directions based on a protocol. The protocol may include a protocol modulation, such as a modulation of the signals for security purposes.

Abstract: A system and method for accessing data to meet disparate security, integrity, and latency requirements includes multiple databases instantiated in the system with different performance attributes. The system receives a data access request from a client application. The system determines one or more data access requirements associated with the data access request and identify a database or set of databases that conform to those requirements. The system then submits the data access request to the identified databases and returns the result to the client application. The system may determine a data integrity threshold for the data access request, and submit the data access request to two or more databases simultaneously.

Abstract: A method for non-invasive operator health monitoring is disclosed. The method may include receiving at least one of one or more images or one or more videos of tracked one or more facial features of a pilot from one or more pilot monitoring devices. The one or more tracked facial features may include at least one of a pilot's eyes, mouth, head posture, forehead, or cheek. The method may include determining at least one of one or more eye tracking parameters, one or more mouth tracking parameters, one or more head tracking parameters, or an emotion of the pilot. The method may include determining a pilot health monitoring value based on at least one of the determined one or more eye tracking parameters, the determined one or more mouth tracking parameters, the one or more head tracking parameters, or the determined emotion of the pilot.

Abstract: A system and method for rendering near range weather information in a first aspect and mid-to-long range weather information in a second aspect includes transforming the mid-to-long range weather information to preserve certain relationships between the near range rendering and the mid-to-long range rendering while compressing distances to fit both renderings on a single display. Criticality metrics are maintained for the compressed mid-to-long range rendering by identifying the most critical weather indicator and applying it to the compressed weather cell rendering.

Abstract: A simulator is disclosed. The simulator includes a display configured to display a 3D simulated environment and a tracking system configured to track a target. The tracking system also includes a projection configured to illuminate the target and a sensor configured to obtain a depth-image of the target. The tracking system also includes a processor configured to determine the distance of the target and/or an angle of the face of a target from the tracking system and/or display. The simulator also includes a computing unit communicatively coupled to the display and the tracking system. The computing unit is configured to send the 3D simulated environment signal to the display and to perform an adjustment of the 3D simulated environment based on at least one of the distance of the target or an angle of a face of the target relative to at least one of the display or tracking system.

Abstract: A system for displaying carbon savings to a user is disclosed. The system may include one or more carbon savings input devices. The one or more carbon savings input devices may include at least one of a flight management system, a fuel system, an air data system, and an engine control system. The system may include one or more user interface devices including one or more displays. The system may include one or more controllers including one or more processors configured to execute a set of program instructions configured to cause the one or more processors to: receive one or more carbon savings inputs from the carbon savings input devices; calculate a carbon savings value based on the received carbon savings inputs; and generate one or more control signals configured to cause the display of the user interface device to display the calculated carbon savings value to the user.

Abstract: A system and method for wavelength detection includes one or more detection stages configured for receiving at least a portion of an optical carrier. Each stage includes a splitter for splitting the signal into two arms. A 90-degree optical hybrid and in-phase (I-channel)/quadrature (Q-channel) differential detectors generate I-channel and Q-channel differential signals based on the hybrid outputs. A gas cell or like multi-point wavelength reference path also receives the input signal and provides a set of reference absorption wavelengths converted into the electrical domain by a reference photodetector. A logic device receives sets of detection signals (including I-channel and Q-channel differential signals and the set of reference wavelengths, all corresponding to a common measurement time) and determines a wavelength of the optical carrier based on an arctangent of a ratio of the Q-channel and I-channel differential signals, mapped to the set of reference absorption wavelengths.

Abstract: A folded slot structurally integrated antenna is defined within the structure of the vertical stabilizer. The folded slot structurally integrated antenna comprises a first terminal with a flared portion, a substantially constant slot width potion, and a second terminal with a flared portion. The substantially constant slot width potion may include one or more curvatures to extend the length of the folded slot structurally integrated antenna within the vertical stabilizer. The antenna system may utilize reactive loading or dynamic slot length switching. A platform may include folded slot structurally integrated antennas in both a vertical stabilizer and horizontal wings or winglets. Horizontal and vertical folded slot structurally integrated antennas may be utilized to produce various polarization profiles.

Abstract: A vision-based navigation system (e.g., for aircraft on approach to a runway) captures via camera 2D images of the runway environment in an image plane. The vision-based navigation system stores a constellation database of runway features and their nominal 3D position information in a constellation plane. Image processors detect within the captured images 2D features potentially corresponding to the constellation features. The vision-based navigation system estimates optical pose of the camera in the constellation plane by aligning the image plane and constellation plane into a common domain, e.g., via orthocorrection of detected image features into the constellation plane or reprojection of constellation features into the image plane. Based on the common-domain plane, the vision-based navigational system generates candidate correspondence maps (CMAP) of constellation features mapped to the image features with high-confidence error bounding, from which optical pose of the camera or aircraft can be estimated.

Abstract: A system may include a mobile ad-hoc network (MANET) including nodes. The nodes may include beacon-based clusterhead (BB-CH) nodes and members. Each of the nodes may be configured to transmit communication data packets and transmit beacons. Each of the nodes may have passive spatial awareness. For each of at least some of the BB-CH nodes having members, a BB-CH node may be configured to compile spatial awareness information of all members of the BB-CH node. The compiled spatial awareness information may include a BB-CH node identification for the BB-CH node, position-location information (PLI) of the BB-CH node, a quantity of the members of the BB-CH node, and a member list including member identifications. For each of the at least some of the BB-CH nodes, the BB-CH node may be configured to broadcast, via efficient flooding, some or all of the compiled spatial awareness information to every connected node.

Abstract: A trusted image recognition system and method are disclosed. A target vehicle includes a target vehicle controller configured to generate a first cryptographic key having a first sequence of bits, and a mechanical key display device configured to display a mechanical representation of the first sequence of bits. A host vehicle includes an image sensor configured to capture an image of the mechanical representation of the first sequence of bits, and a host vehicle controller configured to: recognize the mechanical representation of the first sequence of bits in the image; retrieve the first sequence of bits of the first cryptographic key from the image; generate a second cryptographic key having a second sequence of bits; compare the first sequence of bits to the second sequence of bits; and, responsive to the first sequence of bits matching the second sequence of bits, identify the target vehicle as an authenticated target vehicle.

Abstract: A system and method for implementing M-TIF to integrate one or more non-IP tactical nodes as an integral part of a 5G network includes a tactical translator. The tactical translator provides I/O functionality, message encapsulation, message translation, and IP-to-non-IP address translation. The tactical translator may be interposed between a tactical gateway and a tactical proxy to securely bridge legacy non-IP waveforms with the 5G Core.

Abstract: An inertial head-tracking system includes light emitting diodes (LEDs) and photoreceptors. The LEDs and photoreceptors are positioned around the environment and helmet respectively. A processor periodically receives measurements from the photoreceptors and resets inertial drift based on those measurements. Either the LEDs or the photoreceptors are constrained to a specified range to allow for more accurate drift estimation.

Abstract: A system and method for real-time image transformation monitoring for a display unit receives, via a pixel buffer, pixels of source image data and appends fiducial data to each pixel, the fiducial data corresponding to a reference checksum associated with a transformation map for one or more transformations of the source image into an output image for display. When source image data is read out of the pixel buffer, e.g., as a sequence of pixel datasets, an image transformation monitor extracts the fiducial data appended to each dataset and incorporates each set of extracted fiducial data into a checksum calculation for the current source image. When the transformed output image is complete, the cumulative checksum calculation for the current source image is compared to the reference checksum, determining a system status or detecting a system fault based on whether or not the checksum calculation and reference calculation are equivalent.

Abstract: A system and method for removing modulated interference (e.g., FSK, MSK, CW) from an input signal demodulates the input signal into a tracking bitstream via a set of phase locked loop (PLL) filters, one PLL filter for each modulated interference component (e.g., signal) known or suspected to be interfering with the input signal. Each PLL filter estimates, based on an estimated modulation frequency and center frequency associated with its target modulated interference component, a peak magnitude, phase, and updated center frequency and, based on these parameters, approximates the target interference component. Each re-created modulated interference component is subtracted from the original input signal to produce an output signal from which the known or suspected modulated interference components have been substantially removed.

Abstract: A system including a radar receiver and a processor onboard an aircraft. The processor may be configured to: receive or generate weather radar data; identify an end user computing device to receive the weather radar data; determine whether the end user computing device has a high priority or low priority need for the weather radar data; reduce a size and/or an amount of the weather radar data to be a portion of the weather radar data; and upon a determination that the end user computing device has the low priority need for the weather radar data, route, via a datalink, the portion of the weather radar data having the reduced size and/or reduced amount of the weather radar data to the end user computing device.

Abstract: A profile for a tool implementing a unified modeling language (UML) is described. The profile extends the UML to include decision management functionality. The profile includes stereotypes and customizations which generate question elements, decision elements, alternative elements, and the like. The association between the elements permits a design engineer to review previous decisions and the rationale behind the decisions. In particular, the one of alternative elements is associated with decision element by selected alternative relationship.