Abstract: Systems and methods for improving bearing initialization for a pair of two-element antennas. An exemplary system includes two-element antennas mounted on the bottom and top of an aircraft fuselage, an output device, and a processing device. The processing device receives phase-difference information based on phase of signals received at each element of a two-element antenna, determines if the received phase-difference information is within a predefined low-confidence region, and initializes bearing if the phase-difference information is not within the low-confidence region or the phase-difference information from a predefined number of consecutively received signals meets a predefined consistency requirement.

Abstract: A corner mountable housing (10) is provided for encasing an electronic device and for mounting the electronic device in a corner (12) of a wall or other mount surface (14) via at least one fastener (16) extending through the housing (10) to engage the corner (12). The housing (10) includes a surface-mountable housing portion (20) in the form of a rear cover, with the housing portion (20) being a one-piece molded construction and having first and second fastener retention features (22) and (24) formed therein.

Abstract: A fall protection system for use by a person in climbing a pole includes an outer strap, an outer strap connector adapted to adjust the length of the outer strap in operative connection with the outer strap, a sliding member slidably positioned on the outer strap, a cross strap attached at one end thereof to the sliding member, the cross strap being in operative connection with the outer strap connector at another end thereof, a first adjustment strap operatively attached to the outer strap connector via a first adjustment buckle at a first end thereof and attached to a first end connector at a second end thereof.

Abstract: A light-source system to output at least one stable phase modulated coherent light beam is provided. The light-source system includes a multi-frequency laser system, at least one phase modulator, at least one feedback photodetector, and at least one modulation servo. The multi-frequency laser system emits a reference light beam and provides at least one unmodulated-light beam having a respective at least one carrier frequency offset from the reference carrier frequency. The phase modulator modulates the unmodulated-light beam provided by the multi-frequency laser system. The frequency-selection device monitors a frequency component of interest. The feedback photodetector provides information indicative of beat frequencies between the reference light beam and the modulated-light beam.

Abstract: A method of dynamic model selection for hybrid linear/non-linear process control includes developing a plurality of process models including at least one linear process model and at least one non-linear process model from inputs including dynamic process data from a processing system that runs a physical process. At least two of the plurality of process models are selected based on a performance comparison based on at least one metric, wherein the selected process models number less than a number of the plurality of process models received. A multi-model controller is generated that includes the selected process models. The physical process is simulated using the multi-model controller by applying the selected process models to obtain closed loop performance test data for each of the selected models. The performance test data is compared. A selected process model is then selected.

Abstract: An environmental control system (ECS) for providing conditioned air to a cabin of an aircraft at a desired rate may include a bleed-air driven primary air treatment unit configured to produce pack supply air and to recirculate a portion of the pack supply air into a compressor of the primary air treatment unit. The ECS may also include a bleed-air driven secondary air treatment unit configured to compress ram air at a rate that corresponds to the rate of recirculation. The ECS may be configured to selectively deliver conditioned air from both the primary and the secondary air treatment units to the cabin.

Abstract: Described herein are systems and methods for managing live video data. These include the likes of video management systems, camera servers, methods for providing access to video data, methods of operating camera servers, and software for allowing the implementation of such methods in a computer system. In overview, a video management system is configured such that, upon the failure of a camera server, cameras assigned to that server are automatically reassigned to a backup camera server.

Abstract: Systems and methods for a micro-electromechanical system (MEMS) device are provided. In one embodiment, a system comprises a first outer layer and a first device layer comprising a first set of MEMS devices, wherein the first device layer is bonded to the first outer layer. The system also comprises a second outer layer and a second device layer comprising a second set of MEMS devices, wherein the second device layer is bonded to the second outer layer. Further, the system comprises a central layer having a first side and a second side opposite that of the first side, wherein the first side is bonded to the first device layer and the second side is bonded to the second device layer.

Abstract: A system and method is provided for displaying information related to an in-trail procedure (ITP) on a ITP display aboard a host aircraft. Current flight status data of the host aircraft and at least a second aircraft is obtained, and a vertical traffic scenario including at least the host aircraft ant the second aircraft is rendered on the display. A textual representation of a negotiation between ATC and the host aircraft is also rendered on the ITP display.

Abstract: A method and system (10) are provided for monitoring a restricted area (12) below a temporarily elevated worker (14) working on an elevated power transmission line (16). The method and system (10) utilize a Doppler radar module (40) that is temporarily elevated to a location (32) adjacent the worker (14) and that is configured to detect the presence of personnel (34) who enter the restricted area (12). The system (10) is configured to automatically alert personnel (34) at the worksite (17) who enter the restricted area (12) in response to detection of the personnel (34) by the Doppler radar module (40).

Abstract: Described herein are systems and methods for configuring a BMS. In general terms, the present technology is focused on approaches for arranging and modeling building information data, particularly in terms of equipment categories and relationships between pieces of equipment, for example in the context of an HVAC system. This is advantageous in the sense that the likes of visualization, application creation, and reporting are able to be significantly streamlined. Various embodiments make use of an “equipment model”, being a model which defines items for each piece of equipment in a building system based on predefined standards, thus allowing for predictable descriptions (for example in terms of data points and relationships). Some embodiments combine this with a facility model, which describes a building in spatial terms.

Abstract: Processes for preparing ultra-high molecular weight polyethylene (“UHMW PE”) filaments and multi-filament yarns, and the yarns and articles produced therefrom. Each process produces UHMW PE yarns having tenacities of 45 g/denier to 60 g/denier or more at commercially viable throughput rates.

Abstract: An emergency rope bail-out bag (10) is provided for use and wear by a firefighter or other first responder or emergency rescuer, the bag (10) including a main body (12) for stowing a rope (28), an escape hook (26), and a rappelling device (37); and a tear-away flap (14) that can be grasped with a single hand of a user and pulled away from the main body (12) so as to expose the escape hook (26), the rappelling device (37), and the rope (28) for rapid deployment in an emergency.

Abstract: A system and method are provided for displaying visual flight reference points and their associated flight data. This is achieved by coupling a processor to a display system and configured the processor to generate symbology graphically representative of the VRPs and their associated flight data. The display system then renders the VRP symbology and the flight data symbology proximate to the VRP symbology. In addition, the processor is configured to alter the symbology of the VRPs depending on the estimates elapsed time for each of the VRPs to become visible to the aircraft.

Abstract: A system and method are provided for modifying the position or shape of a premature descent protection envelope with regard to a runway when an aircraft making an approach to the runway is below the nominal approach path and has a flight path angle greater than the nominal approach path angle.

Abstract: In some examples, a first entity is configured to request weather data for a region of interest from a second entity. The second entity may transmit the requested weather data to the first entity in response to receiving the request. In some examples, the second entity only transmits the weather data to the first entity only in response to receiving a specific request for the weather data. Conversely, the first entity may only receive the weather data from the second entity in response to transmitting a request for the weather data.

Abstract: An apparatus that includes a mobile wireless device of an authorized person receiving an identifier of another person who is to be granted temporary access into a secured geographic area of the authorized person by a security system of the authorized person, a processor of the mobile device or the security system generating a temporary access code with specific features that is to be used by the other person for gaining entry into the secured area and the mobile device of the authorized person transferring the temporary password to a mobile wireless device of the other person.

Abstract: An electric taxi predictive performance system may provide a predicted performance for an electric based taxi system (eTaxi) based on environmental information related to a vehicle. In some embodiments, the vehicle may be an aircraft using eTaxi systems to move around an airport runway system. The electric predictive taxi performance system may provide real-time displayed data to help pilots evaluate eTaxi capabilities of the aircraft as conditions change.

Abstract: A controller and loop performance monitoring system is coupled to a controller, detects loop performance degradation in time, and diagnoses a cause of the loop performance degradation. If the cause of loop performance degradation is poor controller tuning, a re-tuning mechanism is triggered. If the cause of loop performance degradation is external to the controller (a disturbance acting on the loop, hardware malfunction etc.), an action defined in control strategy is taken, or the user is informed via alarm, user interface, or upper layer software that collects the performance measures. The monitoring itself is designed to be recursive and with low memory demands, so it can be implemented directly in the controller, without need for data transfer and storage. The monitoring is modular, consisting of oscillation detection and diagnosis part, performance indices part, internal logic part, and triggering part, easily extensible by other performance indices or parts (e.g. for overshoot monitoring).

Abstract: A navigation system comprises a GNSS receiver that receives GNSS signals on multiple tracking channels, an INS that generates inertial data, and a processor. A micro jump detection and correction module comprises an oscillator micro jump detector that monitors estimates of C/N0 in all tracking channels, and detects a micro-jump event when there is an abrupt decrease of C/N0 in all tracking channels. An offsets module defines a plurality of carrier NCO command offsets to search over signal Dopplers in all available tracking channels after the micro jump event is detected, and sends the carrier NCO command offsets to the GNSS receiver to be added to nominal carrier NCO commands. The micro jump detector selects a tracking channel with the highest C/N0 after carrier NCO command offsets are added to nominal carrier NCO commands, computes corrections for clock error estimates, and sends the corrections for the clock error estimates to a GNSS/inertial Kalman filter.