Abstract: A computing device with a multicore processing unit and a memory management unit (MMU) may provide multi-order failure resistant data isolation and segregation with a cross domain filtration system. The multicore processing unit may include a first processor, a second processor, and a third processor. A first processor may process data via an egress filter task(s). The MMU may allow the egress filter task(s) to write the data to a first segregated physical memory location. A second processor may perform filtering of the data via a cross domain filter task(s). The MMU may allow the cross domain filter task(s) to read from the first segregated physical memory location and write to a second segregated physical memory location. A third processor may process the data via an ingress filter task(s). The MMU may allow the ingress filter task(s) to read the data from the second segregated physical memory location.

Abstract: Methods and systems are disclosed for document isolation. A host computer system may be configured to implement document isolation via one or more of a host-based firewall, an internet isolation firewall, and/or a segregation of a trusted memory space and an untrusted memory space. The host computer system may be configured to access one or more files using a first set of one or more applications and/or processes operating within the trusted memory space and/or a second set of one or more applications and/or processes operating within an untrusted memory space. The host computer system may be configured to open (e.g., always open) the one or more accessed files in the trusted memory space of the host computer system.

Abstract: Indium-based interface systems, structures, and methods for forming the same are provided. The disclosed indium-based interfaces may be formed as solid structures between two solid surfaces by providing a solid indium-based material between the two surfaces, and heating the indium-based material above its melting point while in contact with each of the two surfaces to cause the indium-based material to reflow or otherwise liquefy between the two surfaces. The indium-based material may then be cooled below its melting point to form a solid interface material structure that is positioned between and in contact with each of the surfaces.

Abstract: A transparent display provides eye protection from lasers and other high intensity light sources. The transparent display allows users to view objects clearly through the display while also presenting text, graphics or video on the display surface. Simultaneously, the display assembly comprises a component that provides eye protection against high power radiation sources. The transparent display with eye protection provides both protection from high power light sources and an additional cockpit display surface for presentation of information including graphical images, symbology, video, text, and other data.

Abstract: An angle of arrival system is configured to efficiently measure phase differences. The angle of arrival system includes a master receiver for demodulating the signal received at one antenna and for implementing a tracking loop to identify the timing of symbols within the signal. This timing information can be fed back as a synchronization signal to a despreader in the master receiver and to a despreader in each of a number of slave receivers to synchronize the timing at which each signal is despread. Because despreading is synchronized, the outputs of the despreaders can be used to directly calculate phase differences between each pair of signals. In this way, the slave receivers do not need to implement a demodulator or a tracking loop. When the received signal is a non-spread signal, the phase differences between each pair of signals can be calculated directly from the modulated samples of each pair of signals without despreading.

Abstract: Methods and systems are disclosed for endpoint protection and authentication schemes for a host computer system having an internet isolation system. A first host computer system may include a first memory space and a second memory space. The first memory space may be configured to enable storage and operation of a workspace configured to execute a first set of one or more applications and processes running on an operating system of the first host computer system. The second memory space may be configured to enable storage and operation of a second set of one or more applications and processes associated with an isolated computing environment (e.g., a sandboxed computing environment) configured to run on the operating system. When the first host computer system is connected to a network that is known or associated with a predetermined security policy, the first host computer system may instantiate a predetermined security policy configuration.

Abstract: Multivariate position estimation can be performed to provide a position estimate of a moving object. The multivariate position estimation approach can employ multiple types of information including time of arrival (or time difference of arrival), angle of arrival, Doppler, and/or prior location information in an iterative process to calculate a location estimate that is highly accurate. In particular, the multivariate position estimation approach can employ the statistical quality of each of these types of information to quickly arrive at a highly accurate position estimate within a 3D coordinate system. The multivariate position estimation approach can be implemented in environments where a single receiver is available as well as in environments where multiple receivers exist.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from thermal isolation of a flight recorder memory core. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Fault-tolerant liquid crystal displays are delineated for avionics systems. At least some example embodiments are methods including providing an avionics display full screen on the LCD, the providing being implemented by driving source signal lines of the LCD by way of a first source driver circuit through a first set of FETs; driving gate signal lines of the LCD by way of a first gate driver circuit through a second set of FETs; preventing back biasing of a second source driver circuit by electrically isolating the source signal lines from the second source driver circuit; and preventing back biasing of a second gate driver circuit by electrically isolating the gate signal lines from the second gate driver circuit.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from a vacuum protected flight recorder memory. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: One embodiment illustrated herein includes a system for simulating communications in an environment. The system includes a postulated physical environment model, having modeled terrain and continuous changes over time. A channel parameter calculator is coupled to the postulated physical environment model, and configured to obtain samples from the postulated physical environment model, each sample comprising information about modeled terrain at a given time. The channel parameter calculator is further configured to, from the obtained samples, generate communication channel parameters, over time. A channel simulator is coupled to the channel parameter calculator. The channel simulator is configured to be coupled to signal source and to, using the communication channel parameters, apply the communication channel parameters to a communication signal from the signal source to simulate transmission of data through a simulated channel over time.

Abstract: Systems and methods are provided to implement intelligent cooling interface architectures for cooling systems that employ a heat transfer interface between multiple separate coolant circulation loops. A heat transfer interface may be advantageously managed based on monitored real time operational parameters (e.g., operating conditions such as pressures, mass flow rates, temperatures, etc.) within one or more of the separate coolant loops. Diagnostics and prognostics may be performed to verify proper cooling system operation and to detect out-of-specification operational parameters based on expected or acceptable levels for these measurements in view of the heat load to be removed. In this way, the cooling system performance may be monitored to ensure proper operation and to anticipate and alert a user when cooling system operation is trending toward a failure condition.

Abstract: Sending data on a network based on limiting the propagation of data based on a distance between a sender of the data and one or more receivers of the data. A method includes determining a maximum distance that a message should travel in a network from a sender to a receiver. The method further includes configuring a distance property or distance proxy property conforming with the determined distance. The method further includes sending the message by transmitting the message in a fashion that causes the message to be carried on the network in compliance with the configured distance property or distance proxy property.

Abstract: A computing device with a multicore processing unit and a memory management unit (MMU) may provide multi-order failure resistant data isolation and segregation with a cross domain filtration system. The multicore processing unit may include a first processor, a second processor, and a third processor. A first processor may process data via an egress filter task(s). The MMU may allow the egress filter task(s) to write the data to a first segregated physical memory location. A second processor may perform filtering of the data via a cross domain filter task(s). The MMU may allow the cross domain filter task(s) to read from the first segregated physical memory location and write to a second segregated physical memory location. A third processor may process the data via an ingress filter task(s). The MMU may allow the ingress filter task(s) to read the data from the second segregated physical memory location.

Abstract: Optimizations are provided for controlling an amount of radiated power (i.e. spectral flux density) that is being transmitted to a particular location. To that end, one or more antennas are used to transmit a power signal. Then, position information for each of those antennas is determined. Additionally, environmental information for the environment in which the antennas are operating is also determined. Also, an antenna radiation pattern for each of those antennas is also determined. Thereafter, how much power is radiated to a particular location is controlled so that the power never exceeds a certain threshold value. This control is achieved by dynamically adjusting the transmit power of the antennas based on the information obtained from the position information, the environmental information, and the antenna radiation pattern information.

Abstract: A network end-point communicates, to a controller, a unique hardware identifier that is associated with a first end-point. The network end-point receives from the controller a first encryption key that is uniquely matched to a decryption key privately held by a second end-point. The network end-point then receives device data from a first device in direct communication with the first end-point. The network end-point communicates the device data to the second end-point, wherein the device data is encrypted using the first encryption key.

Abstract: An angle of arrival system can be self-calibrating. The angle of arrival system can continuously estimate imperfections caused by the analog RF components and dynamically apply corrections based on these estimates. As a result, an angle of arrival system can employ inexpensive components, will not require factory calibration, but can still perform geolocation with high precision.

Abstract: Various aircraft systems may benefit from enhancements that increase the reliability of the systems. For example, certain avionics systems may benefit from a distributed aircraft recorder system. A system can include an aircraft recorder on an aircraft. The system can also include a plurality of memory units on the aircraft and remotely located from the aircraft recorder. The memory units may be configured to receive streaming audio and flight data from the aircraft recorder.

Abstract: Methods and systems adapted for providing forward error correction for data packets containing a relationship between the data in each data packet. Data packets encoded in one error correction coding scheme are received and a second error correction coding scheme is identified based on the relationship between the data in each data packet. The data packets are then decoded using the second error correction coding scheme.

Abstract: Optimizations are provided in the design and fabrication of a parabolic antenna reflector. In particular, a parabolic antenna reflector comprises an inner reflective face being formed in a parabolic shape and a first outer circumferential portion. The parabolic antenna also includes an outer face being formed in a different parabolic shape and a second circumferential portion. The first outer circumferential portion is coupled to the second outer circumferential portion to form an inner body between the inner reflective face and the outer face. This inner body includes a monopulse comparator waveguide. As a result, the monopulse comparator waveguide is embedded between the inner reflective face and the outer face. In some instances, this waveguide includes one or more bends. Additionally, in some instances, the parabolic antenna reflector is fabricated using additive manufacturing techniques such that the parabolic antenna reflector is a single printed unit.