摘要:
A destination runway selection method, system and apparatus for use with a Terrain Awareness and Warning System (“TAWS”). The method involves determining upon which of a number of candidate runways an aircraft is most likely to land so that appropriate Required Terrain Clearance (“RTC”) values and other alert thresholds may be referenced. According to a first aspect of the method, a destination airport is initially selected from among candidate airports. According to a second aspect of the method, a destination runway is selected from among the candidate runways at the destination airport. In one particular embodiment of the invention, the candidate runway is selected solely on the basis of distance calculations between the runway and the aircraft.
摘要:
A spatial data search method, system and apparatus for identifying particular data of significance around a reference vector through the spatial data. The method involves determining a reference vector within a spatial region for which spatial data exists, loading a portion of the spatial data including the data around the reference vector into a memory buffer, and searching the spatial data in a prioritized order. The method, system and apparatus have particular utility in searching geographic data for a terrain awareness and warning system (“TAWS”) and display in an aircraft. Embodiments of the present invention provide advantages over existing sequential and radial search methods, significantly reducing the processing and calculations required and providing faster alerts to pilots.
摘要:
A spatial data search method, system and apparatus for identifying particular data of significance around a reference vector through the spatial data. The method involves determining a reference vector within a spatial region for which spatial data exists, loading a portion of the spatial data including the data around the reference vector into a memory buffer, and searching the spatial data in a prioritized order. The method, system and apparatus have particular utility in searching geographic data for a terrain awareness and warning system (“TAWS”) and display in an aircraft. Embodiments of the present invention provide advantages over existing sequential and radial search methods, significantly reducing the processing and calculations required and providing faster alerts to pilots.
摘要:
A spatial data search method, system and apparatus for identifying particular data of significance around a reference vector through the spatial data. The method involves determining a reference vector within a spatial region for which spatial data exists, loading a portion of the spatial data including the data around the reference vector into a memory buffer, and searching the spatial data in a prioritized order. The method, system and apparatus have particular utility in searching geographic data for a terrain awareness and warning system (“TAWS”) and display in an aircraft. Embodiments of the present invention provide advantages over existing sequential and radial search methods, significantly reducing the processing and calculations required and providing faster alerts to pilots.
摘要:
A spatial data search method, system and apparatus for identifying particular data of significance around a reference vector through the spatial data. The method involves determining a reference vector within a spatial region for which spatial data exists, loading a portion of the spatial data including the data around the reference vector into a memory buffer, and searching the spatial data in a prioritized order. The method, system and apparatus have particular utility in searching geographic data for a terrain awareness and warning system (“TAWS”) and display in an aircraft. Embodiments of the present invention provide advantages over existing sequential and radial search methods, significantly reducing the processing and calculations required and providing faster alerts to pilots.
摘要:
An avionics system and method is employed for alerting pilots of low premature descent during final landing approach. The method involves determining Final Approach Flight Safety Altitudes for a plurality of runways, identifying which runway an aircraft is likely to land on, and alerting the pilot if the aircraft altitude is lower than the final approach flight safety altitude. The method takes into account terrain information, airport and runway information, and aircraft reference data to make its determination. Particular embodiments reference the Final Approach Fix, one or more step down fix values, the Minimum Descent Altitude and the Missed Approach Point in calculating the Final Approach Flight Safety Altitudes. The system and method have particular utility with a Terrain Awareness and Warning System (“TAWS”) and display in an aircraft.
摘要:
Systems, devices and methods are provided for determining the appropriate or desired geographical correction source for SBAS corrections. One aspect provided herein is a method. According to one method embodiment, a Space Based Augmentation System (SBAS) correction message is received from a selected SBAS satellite. It is determined whether at least one criterion is satisfied for using the selected SBAS satellite as a correction source and then processing the correction message received therefrom. A second SBAS satellite is selected from which to receive SBAS correction messages upon determining that at least one criterion is not satisfied for using the selected SBAS satellite as a correction source. One example of SBAS is the Wide Area Augmentation System (WAAS) used in North America Other aspects and embodiments are provided herein.
摘要:
Systems, devices and methods are provided improving the accuracy, availability and integrity of GPS service. Specifically, the present invention provides a GPS device with the correction messages which are from the most accurate and desirable source while at the same time conserving processor and memory resources of the device. The method includes receiving GPS data. An SBAS signal from a first correction source is received. Ionospheric mask messages, for a number of grid points, in the received SBAS signal are analyzed. An abbreviated bounding region around a group of similar type grid points is constructed. The method further includes determining whether the position of the GPS device is within the abbreviated bounding region.
摘要:
Systems, devices and methods are provided for determining the appropriate or desired geographical correction source for SBAS corrections. One aspect provided herein is a method. According to one method embodiment, a Space Based Augmentation System (SBAS) correction message is received from a selected SBAS satellite. It is determined whether at least one criterion is satisfied for using the selected SBAS satellite as a correction source and then processing the correction message received therefrom. A second SBAS satellite is selected from which to receive SBAS correction messages upon determining that at least one criterion is not satisfied for using the selected SBAS satellite as a correction source. One example of SBAS is the Wide Area Augmentation System (WAAS) used in North America. Other aspects and embodiments are provided herein.
摘要:
Systems, devices and methods are provided improving the accuracy, availability and integrity of GPS service. Specifically, the present invention provides a GPS device with the correction messages which are from the most accurate and desirable source while at the same time conserving processor and memory resources of the device. The method includes receiving GPS data. An SBAS signal from a first correction source is received. Ionospheric mask messages, for a number of grid points, in the received SBAS signal are analyzed. An abbreviated bounding region around a group of similar type grid points is constructed. The method further includes determining whether the position of the GPS device is within the abbreviated bounding region.