Abstract: A system may include a transmitter node and a receiver node. Each node may include a communications interface including at least one antenna element and a controller operatively coupled to the communications interface, the controller including one or more processors. Each node may be time synchronized to apply Doppler corrections to said node's own motions relative to a stationary common inertial reference frame. The stationary common inertial reference frame may be known to the transmitter node and the receiver node prior to the transmitter node transmitting signals to the receiver node and prior to the receiver node receiving the signals from the transmitter node.

Abstract: A system includes a communication interface configured to receive squitter messages from other aircraft in the vicinity of an ownship aircraft. The system also includes a processor aboard the ownship configured to receive the squitter messages, determine the altitude and position of the other aircraft from the squitter messages, and compare the altitude of the other aircraft to terrain data at the determined position to determine whether any of the other aircraft are operating abnormally. The system also includes a display providing an indication that a first aircraft of the other aircraft is operating abnormally.

Abstract: Cellular communications, such as 5G cellular, may be a primary link between cell phones and a base station. Such cellular communications may be desirable, due to a high link rate. When the cellular communications are denied, a tactical waveform may be used to bridge communications between the cell phones and the base station. The tactical waveform may be transmitted between tactical radios coupled with the cell phones. The waveform may include a line-of-sight waveform. The tactical waveform may also include a beyond-line-of-sight waveform.

Abstract: A system including a radar receiver, a computer readable medium, and a processor. A data structure containing historical information pertaining to weather conditions for multiple locations may reside in the medium. The processor may be configured to: obtain aircraft data including information of an aircraft position; obtain external data; obtain a portion of the historical information pertaining to a location corresponding to the aircraft position; obtain weather radar data; analyze the weather radar data to determine if windshear exceeds a windshear alert threshold; upon an occurrence of the windshear exceeding the windshear alert threshold, determine whether to issue or suppress a windshear alert based on the aircraft data, the external data, and/or the portion of the historical information; and one of a) output the windshear alert for presentation to a user or b) adjust the windshear alert threshold causing the windshear alert to be suppressed and/or suppress the windshear alert.

Abstract: A system and method for hybrid any-cast (unicast, multicast and anycast) routing in a mobile ad hoc communication network (MANET) is disclosed. In embodiments, each communication node of the MANET may implement on-demand routing functions whereby the node does not establish or maintain routes to destination nodes unless there is active communication, discovering routes via flooding of data packets in transit. Each communication node may select, or may transition from on-demand to, proactive routing functions. Proactive nodes first establish routes to clusters of other proactive nodes by flooding, and receiving acknowledgments from, the other proactive nodes. Each cluster of proactive nodes maintains routes within the cluster and establishes communication routes outside the cluster by flooding and relaying of routing status messages via clusterhead and gateway nodes.

Abstract: A participating unit (PU; e.g., radio system, communications node) for a fourth generation (4G) automatic link establishment (ALE) network is disclosed. The PU initiates a link quality analysis (LQA) exchange with a callee PU of the network by transmitting a link request. The caller PU receives in response to the link request a link confirmation including callee-side LQA data for the reception of the link request, performing LQA measurements based on the reception. In response to the link request, the caller PU terminates the LQA exchange by transmitting to the callee PU a link termination including encoded caller-side LQA data, so data from both sides of the exchange is stored by both PUs.

Abstract: A system and for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms. The set of decorrelated floating-point ambiguities is used to compute protection levels and the probability of almost fix (PAF), or the probability that the partial almost-fix solution corresponding to the decorrelated ambiguities is within the region of correctly-fixed or low-error almost-fixed ambiguities. While the PAF remains below threshold and the protection levels remain below alert levels, the optimal navigation solution (floating-point, partial almost-fix, or fully fixed) is generated by fixing the decorrelated ambiguities are one at a time in the LAMBDA domain and replacing the appropriate carrier-phase ambiguities with the corresponding fixed ambiguities, reverting to the last solution if PAF reaches the threshold or if protection levels reach the alert levels.

Abstract: A method for testing platforms (e.g., live, virtual, and/or constructive platforms associated with autonomous aircraft systems and their component subsystems) in a live/virtual/constructive (LVC) environment. In embodiments, the method includes determining, via a testbed engine, the development state of a platform component under test. The method includes retrieving a test to be executed, the test including test conditions to be applied to the component. The method includes determining whether the component is enabled to respond to the test conditions. The method includes, if the component is enabled to respond to the test conditions, executing the test while monitoring the component to detect a first output response and a second output response. The method includes identifying, via the testbed engine, at least one change in the development state of the component by comparing the first and second output responses.

Abstract: A system and method are disclosed. The system includes a computer readable medium having non-transitory computer readable program code embodied therein for risk-aware contingency flight re-planning. The computer readable instructions include instructions, which when executed by a computer device or processors, perform and direct the step of receiving a preplanned route, receiving a risk tolerance level from a decision maker, receiving input from a database, receiving an indication of an en route risk to the vehicle, determining an association of an exposure cost with at least one of a plurality of 4-D paths, ranking the plurality of 4-D paths based on the association of the exposure cost, and displaying a portion of the plurality of 4-D paths to the decision maker.

Abstract: A system and method for deploying software is disclosed. The system includes an architecture for deploying simulation software as a service. The architecture includes a client layer. The client layer includes an edge device, a resource manager, an update framework, a firewall, and a key management system. The architecture further includes a control layer communicatively coupled to the client layer, wherein a portion of the control layer is configured within a server. The control layer includes an application programming interface, one or more containers, wherein at least one of the one or more containers is a simulation processing container. The control layer further includes an orchestration node, a continuous integration tool, one or more processors, and a content delivery network module. The architecture further includes a data layer communicatively coupled to the one or more containers.

Abstract: A navigation satellite receiver system is disclosed. The system includes a host receiver. The host receiver includes a user interface, a module connector, and a controller coupled to the user interface and the module connector. The system further includes a receiver module operably coupled to the receiver module. The receiver module includes an antenna configured to receive one or more satellite navigation signal. The receiver module further includes an interface receiver card operably coupled to the module antenna. The interface receiver card is configured to process the one or more navigation signals. The receiver module further includes a host connector communicatively coupled to the interface receiver card and is configured to couple to the module connector. The module includes a housing configured to receive and protect the interface receiver card, the antenna, and the host connector.

Abstract: A system is disclosed that includes an electronic package. The electronic package includes a package base couplable to a host substrate, and a package lid mechanically coupled to the package base that includes one or more transparent lid areas, configured to permit transmission of light. The electronic package further includes a thermal spreader bonded on a first side to a first side of the package lid. The thermal spreader includes one or more transparent spreader areas that are configured to allow transmission of light through the thermal spreader. The electronic package further includes one or more integrated circuits bonded to a second side of the thermal spreader that communicatively coupled to the host substrate. The electronic package further includes one or more optical paths that include at least one of the one or more transparent spreader areas configured adjacent to at least one of the transparent lid areas.

Abstract: A circuit board is disclosed that has a pre-warming function. The circuit board includes a substrate and one or more conductive paths embedded in the substrate. The one or more electrically conductive paths include a logic control circuit containing a heating element and a temperature-sensitive element configured to control the heating element and deliver an input when the temperature-sensitive element has reached a threshold temperature. The one or more electrically conductive paths further includes a heater power circuit configured to deliver power to the logic control circuit. The one or more electrically conductive paths further includes an operational power circuit configured to switch off power to the heater power circuit and switch on power to the operational power circuit upon a delivery of the input from the logic control circuit.

Abstract: A system and method for cooperative aerial vehicle collision avoidance provides an ESA-based sensor network capable of high-resolution threat proximity measurements and cooperative and non-cooperative collision avoidance in the full spherical volume surrounding an aerial vehicle. The system incorporates a plurality of ESA panels onto the airframe where the conical scan volumes overlap leaving no gaps in spherical proximity coverage. The resulting received data is stitched together between the neighboring ESA panels and used to determine a position and vector for each threat aerial vehicle within range. The data is transmitted through a cooperative collision avoidance network to nearby aerial vehicles, and presented to the autopilot and flight crew to increase situational awareness. The system determines a maneuver for the aerial vehicle and a maneuver for the threat aerial vehicle based on relative maneuvering capabilities to maintain desired separation.

Abstract: A system may include an array of interconnected memristors. Each memristor may include a first electrode, a second electrode, and a memristor material positioned between the first electrode and the second electrode. The system may further include a controller communicatively coupled to the array of interconnected memristors. The controller may be configured to tune the array of interconnected memristors.

Abstract: A system may include a software-defined radio (SDR) configured to communicate over multiple channels by using a beyond line of sight (BLOS) waveform. The SDR may be configured to transmit encrypted communications over some or all of the multiple channels to a satellite and on to at least one radio access node (RAN). The SDR may be configured to receive encrypted communications over some or all of the multiple channels from the at least one RAN via the satellite. At least one of the multiple channels may use a spreading factor greater than 256. The SDR may be configured to simultaneously transmit and receive encrypted communications over the multiple channels.

Abstract: Systems and methods for custom photolithography masking via a precision dispense apparatus and process are disclosed. Methods include creating a toolpath instruction for depositing opaque onto a substrate, programming a precision dispense apparatus to execute the created toolpath instruction, and causing the precision dispense tool to deposit opaque material onto the substrate to form the photomask. The substrate may be an optically transparent plate or film or may be an electronic substrate where the opaque material is deposited directly onto a photoresist coating. Capabilities of the systems and methods disclosed herein extend to 3D substrates and custom photolithography masking, among others.

Abstract: A global navigation satellite system (GNSS) receiver can include a code generator, a signal correlator circuit, and a processor. The code generator can generate samples of a plurality of ranging codes associated with corresponding GNSS transmitters. The signal correlator circuit can receive, according to a first clock rate, samples of a signal from a GNSS transmitter, and update, according to a second clock rate and a time division multiplexing scheme, cross-correlation values indicative of cross-correlations between the signal and a subset of the plurality of ranging codes. The second clock rate can be equal to at least multiple times the first clock rate. The signal correlator circuit can determine final results of the cross-correlation values based on the updating of the cross-correlation values, and a processor can identify the GNSS transmitter among the plurality of GNSS transmitters based on the final results of the cross correlation values.

Abstract: An antenna array includes a printed circuit board including printed circuit board elements circumferentially disposed at locations on a surface of the printed circuit board. The printed circuit board elements are disposed in opposing pairs at diametrically opposite locations and include a first member and a second member. The first member intersects the second member which is curved. The antenna array can be an ultra-ultra wide band (UUWB) wavelength scaled array (WSA) tightly coupled dipole array (TCDA) active electronically scanned array (AESA) aperture.

Abstract: An Aircraft Communication and Addressing Reporting System (ACARS) compatible transmitter is disclosed. In embodiments, the transmitter receives outbound (e.g., downlink or uplink) ACARS messages from aircraft end systems and compresses the header/trailer (H/T) and/or text payloads of ACARS blocks (e.g., text messages) or ACARS acknowledgements (ACK)) prior to transmission. For example, the transmitter compresses ACARS blocks by removing fixed markers and encoding variable fields. The transmitter parses incoming text payloads to determine their character distribution and selects a radix alphabet including the ASCII characters used in the text payload.