Abstract: An ADS-B traffic filter to remove ADS-B positional messages or tracks with unstable ADS-B data or anomalies. The anomaly in ADS-B data can be caused by own ship ADS-B data processing and by errors in ADS-B OUT messages, such as positional outliers, ADS-B OUT parameters gaps, frozen data, walking track when stopped and other issues within ADS-B OUT messages. The ADS-B traffic filter of this disclosure may remove erroneous ADS-B targets from computation input delivered to a traffic collision warning systems in locations where high horizontal position accuracy is desirable such as ground operations. The filter may validate positions decoded from received ADS-B OUT messages, and data history of targets, to independent signal components from ADS-B broadcast (e.g., position and ground speed data), as well as compare the reported position with a reasonability bound provided by local runway or airport geometry data.

Abstract: A system for monitoring a fatigue level of an operator of a vehicle includes a sensor configured to generate a signal indicative of a physiological state of the operator; a display for the operator; and a controller to: receive, from the sensor, the signal; determine the fatigue level of the operator by analyzing the received signal using an algorithm developed using operator fatigue statistics; generate a real-time fatigue report for the operator based on the determined fatigue level of the operator; transmit the generated real-time fatigue report to the display for the operator for display to the operator, and a display for a dispatcher for the vehicle for display to the dispatcher; generate an anonymized version of the real-time fatigue report; and transmit the anonymized version of the real-time fatigue report to a cloud for access by remote users.

Abstract: A system comprises a pressure air data system comprising non-optical air data sensors that interrogate a region of interest outside of a vehicle to determine a first set of air data measurements comprising a first static air pressure. The system also includes an optical air data system comprising optical air data sensors that interrogate the region of interest to determine a second set of air data measurements comprising a second static air pressure. The second static air pressure is determined using conversion coefficients. A processor receives and processes the first static air pressure; receives and processes the second static air pressure; dynamically recalibrates the conversion coefficients by computing a correction factor; sends the correction factor to the optical air data system to update the second static air pressure; and outputs an optimized static air pressure based on the first static air pressure and the updated second static air pressure.

Abstract: Systems and methods for estimating attitude and heading are provided. The systems and methods utilize carrier phase single difference (CSD) measurements or carrier phase double difference (CDD) measurements and a validation test for CSD or CDD measurement residuals. The systems and methods include applying a wrapping function with limit of ±half of the GNSS carrier signal wavelength to CSD or CDD measurement residuals to generate refined CSD or CDD measurement residuals and validating the refined CSD or CDD measurement residuals variance to determine valid CSD or CDD measurements. By using the validated CSD and CDD measurements, the systems and methods enable low grade hybrid inertial navigation systems to estimate attitude and heading with integrity and without a magnetometer or the need for integer ambiguity resolution even during the static or steady phases of flight/operation.

Abstract: Methods and systems to process and assure integrity of radar measurements, detect the effects of GNSS jamming and/or spoofing events, identify GNSS measurements affected by the GNSS jamming and/or spoofing events, and assure the integrity of the GNSS measurements unaffected by jamming and/or spoofing events in a vehicle navigation system are disclosed. The methods are implemented to integrate inertial measurements, GNSS measurements, and radar measurements for the vehicle, and apply solution separation techniques to all of the measurements. The solution separation techniques use a main filter for hybridization of the inertial measurements, the GNSS measurements, and the radar measurements, with additional sub-solution filters and sub-sub-solution filters that use combinations of these measurements. This provides common processing of the GNSS and radar sensors in a single hybridization and solution separation framework.

Abstract: Methods and systems to process and assure integrity of DME and/or VOR measurements, detect the effects of GNSS jamming and/or spoofing events, identify GNSS measurements affected by the GNSS jamming and/or spoofing events, and assure the integrity of the GNSS measurements unaffected by jamming and/or spoofing events in a vehicle navigation system are disclosed. The methods are implemented to integrate inertial measurements, GNSS measurements, and DME/VOR measurements for the vehicle, and apply solution separation techniques to all of the measurements. The solution separation techniques use a main filter for hybridization of the inertial measurements, the GNSS measurements, and the DME/VOR measurements, with additional sub-solution filters and sub-sub-solution filters that use combinations of these measurements. This provides common processing of the GNSS and DME/VOR sensors in a single hybridization and solution separation framework.

Abstract: Systems and methods for thermal management of computing systems are provided. The systems and methods described herein guarantee a thermal envelope of a computing system while preserving the compute and render performance capabilities of the computing system by implementing a thermal-aware scheduling policy, adjusting an amount of available memory bandwidth to computing resources, adjusting an amount of memory utilization by one or more applications executed by the computing resources, and/or allocating cache to workloads based on memory demands.

Abstract: Embodiments for improved processing efficiency between a processor and at least one coprocessor are disclosed. Some examples are directed to a processor-coprocessor scheduling in which workloads are scheduled to a coprocessor based on a timing window of the processor. In additional or alternative examples, workloads are assigned to the coprocessor based on the processing resources and/or an order of priority. In connection with the disclosed embodiments, the coprocessor can be implemented by a graphics processing unit (GPU), hardware processing accelerator, field-programmable gate array (FPGA), application-specific integrated circuit (ASIC), or other processing circuitry. The processor can be implemented by a central processing unit (CPU) or other processing circuitry.

Abstract: Embodiments for improved processing efficiency between a processor and at least one coprocessor are disclosed. Some examples are directed to mapping of workloads to one or more clusters of a coprocessor for execution based on a coprocessor assignment policy. In connection with the disclosed embodiments, the coprocessor can be implemented by a graphics processing unit (GPU), hardware processing accelerator, field-programmable gate array (FPGA), application-specific integrated circuit (ASIC), or other processing circuitry. The processor can be implemented by a central processing unit (CPU) or other processing circuitry.

Abstract: Systems and methods for regulating memory utilization for coprocessors are provided. In one embodiment, a computing system comprises: a processor; a compute processor configured to execute one or more kernels; a memory coupled to the processor and the compute processor. The system is configured to: allocate at least one task memory transaction quota to at least a first set of tasks executed on a first core of the processor; allocate at least one compute processor memory transaction quota for executing the kernels on the compute processor; execute within a first timing window iteration the first set of tasks and the kernels, wherein the kernels are executed during the first timing window iteration until the compute memory transaction quota is depleted; and regulate a rate of memory transaction access by the one or more kernels to the memory when the first set of tasks are executing on the processor.

Abstract: According to certain aspects of the disclosure, a computer-implemented method may be used for rotorcraft track and balance. The method may include capturing one or more images of at least one rotating blades of a rotorcraft and analyzing the one or more images of the at least one rotating blades to determine blade information. Additionally, the method may include determining a location of the at least one rotating blades in the one or more images based on the blade information and calculating blade position information based on the determined location of the at least one rotating blade and a parameter of a user device capturing the one or more images. Additionally, the method may include displaying the blade position information to the user device and displaying instructions on one or more adjustments to the at least one rotating blades of the rotorcraft based on the blade position information.

Abstract: A contactless power supply and motor control system includes a pulse width modulator, a rotary transformer, a demodulator circuit, a motor driver, and a motor. The pulse width modulator supplies a first pulse width modulated (PWM) signal that has a duty cycle and a first amplitude. The rotary transformer receives the PWM signal. The secondary winding is rotatable relative to the primary winding and supplies a second PWM signal having the duty cycle and a second amplitude. The demodulator circuit is rotatable with the secondary winding and supplies a demodulated direct current (DC) voltage having a DC voltage amplitude. The motor driver is rotatable with the secondary winding and the demodulator circuit and controllably supplies motor current. The motor receives the motor current and rotates at a rotational speed.

Abstract: According to certain aspects of the disclosure, a computer-implemented method may be used for overlay display. The method may include displaying, by the one or more processors, information in an overlay; determining, by the one or more processors, a field of view of the user based on determining a positioning of the user device; determining, by the one or more processors, whether the overlay meets a minimum visibility criteria based on the positioning of the user device; and displaying, by the one or more processors, a minimum viewable portion of the overlay in the field of view of the user upon determining that the overlay does not meet the minimum visibility criteria.

Abstract: Systems and methods for estimating attitude and heading are provided. The systems and methods utilize carrier phase single difference (CSD) measurements or carrier phase double difference (CDD) measurements and a validation test for CSD or CDD measurement residuals. The systems and methods include applying a wrapping function with limit of ±half of the GNSS carrier signal wavelength to CSD or CDD measurement residuals to generate refined CSD or CDD measurement residuals and validating the refined CSD or CDD measurement residuals variance to determine valid CSD or CDD measurements. By using the validated CSD and CDD measurements, the systems and methods enable low grade hybrid inertial navigation systems to estimate attitude and heading with integrity and without a magnetometer or the need for integer ambiguity resolution even during the static or steady phases of flight/operation.

Abstract: In some examples, a system that mounts on a vehicle includes a transceiver configured to transmit a first surveillance message including a first value for a quality parameter, wherein the first value indicates a first level of integrity or accuracy for the first surveillance message. The transceiver is also configured to receive a reply message to the first surveillance message. The system also includes processing circuitry configured to determine a second value for the quality parameter in response to the transceiver receiving the reply message, wherein the second quality parameter indicates a second level of integrity or accuracy for surveillance messages transmitted by the transceiver, and wherein the second level of integrity or accuracy is higher than the first level. The transceiver is configured to transmit a second surveillance message including the second value for the quality parameter in response to the processing circuitry determining the second quality parameter.

Abstract: Systems and methods for outlier mitigation in safety-critical systems are provided. In one embodiment, a computer system comprises: a processor comprising one or more processing cores; a scheduling function that schedules the execution of applications, the applications each comprise threads; a contingency budgeting manager (CBM) that defines at least a first pre-determined set of threads from the threads of the applications and assigns a contingency budget pool to the first set of threads. The first set of threads are each scheduled by the scheduling function to execute on a first processing core. The CBM is further configured to monitor execution of each of the threads of the first set of threads to identify when a first thread is an execution time outlier. When the CBM determines that the first thread is an execution time outlier, it allocates additional thread execution time from the contingency budget pool to the first thread.

Abstract: Disclosed are systems, methods, and non-transitory computer-readable medium for determining an auxiliary power unit health indicator. The system may receive at least one field data of an auxiliary power unit, transforming the field data into at least one corrected field data, filtering the at least one corrected field data into at least one filtered field data, calculating at least one offset field data from the at least one filtered field data, determining a health indicator of the auxiliary power unit based on the at least one offset field data, and determining a maintenance procedure for the auxiliary unit based on the health indicator.

Abstract: A method of supplementing a satellite based augmentation system approach during low visibility conditions is provided. The method includes acquiring satellite range measurements and additional measurements from at least one additional onboard independent sensor. Core sigma values are assigned for satellite range measurements and for each additional measurement from the at least one additional onboard independent sensor. A weighted position solution is determined using the acquired satellite range measurements, the acquired additional measurements and the assigned core sigma values. A discriminator is applied that utilizes vehicle positions derived from the acquired satellite range measurements and from the additional measurements to determine if a fault is present in the weighted position solution. An alert is generated if an output of the discriminator is outside a set tolerance value needed for low visibility operation.

Abstract: In some examples, a system includes a receiver configured to receive communication from a traffic management system and a transmitter configured to transmit surveillance messages. The system also includes processing circuitry configured to determine, in a first instance, that the receiver has not received a command signal from the traffic management system. The processing circuitry is also configured to suppress transmission of surveillance messages by the transmitter in response to determining that the receiver has not received the command signal. The processing circuitry is further configured to determine, in a second instance, that the receiver received the command signal from the traffic management system. The processing circuitry is configured to cause the transmitter to transmit the surveillance messages in response to determining that the receiver received the command signal.

Abstract: Systems and methods for outlier mitigation in safety-critical systems are provided. In one embodiment, a computer system comprises: a processor comprising one or more processing cores; a scheduling function that schedules the execution of applications, the applications each comprise threads; a contingency budgeting manager (CBM) that defines at least a first pre-determined set of threads from the threads of the applications and assigns a contingency budget pool to the first set of threads. The first set of threads are each scheduled by the scheduling function to execute on a first processing core. The CBM is further configured to monitor execution of each of the threads of the first set of threads to identify when a first thread is an execution time outlier. When the CBM determines that the first thread is an execution time outlier, it allocates additional thread execution time from the contingency budget pool to the first thread.