Aircraft synthetic vision systems utilizing data from local area augmentation systems, and methods for operating such aircraft synthetic vision systems

摘要

An aircraft synthetic vision display system (SVS) includes a topographical database including topographical information relating to an airport, a global positioning system receiver that receives a satellite signal from a global positioning satellite to determine a geographical position of the aircraft, and a ground-based augmentation system receiver that receives a ground-based signal from a ground-based transmitter associated with the airport, wherein the ground-based signal includes geographical information associated with the airport. The SVS further includes a computer processor that retrieves the topographical information from the topographical database based on the geographical position of the aircraft, that retrieves the geographical information associated with the airport, and that corrects the topographical information using the geographical information associated with the airport to generate corrected topographical information. Still further, the SVS includes a display device that renders three-dimensional synthetic imagery of environs of the aircraft based on the corrected topographical information.

主权项

1. An aircraft synthetic vision display system comprising:
a topographical database comprising topographical information relating to an airport; a global positioning system receiver that receives a satellite signal from a global positioning satellite to determine a geographical position of the aircraft; a ground-based augmentation system receiver that receives a ground-based signal from a ground-based transmitter associated with the airport, wherein the ground-based augmentation system receiver receives the ground-based signal from a local area augmentation system associated with the airport, wherein the ground-based signal comprises a very-high frequency data broadcast (VDB) signal, wherein the VDB signal comprises: geographical information associated with the airport, message Type 4 information comprising final approach segment information associated with an approach to a runway at the airport, and runway occupancy status information; a computer processor that retrieves the topographical information from the topographical database based on the geographical position of the aircraft, that retrieves the geographical information associated with the airport, that validates the topographical information using the geographical information associated with the airport, and that corrects the topographical information using the geographical information associated with the airport to generate corrected topographical information; and a display device that renders three-dimensional synthetic imagery of environs of the aircraft based on the corrected topographical information, the three-dimensional synthetic imagery further comprising a graphical rendering of the runway at the airport, the final approach segment based on the message Type 4 information, and an aircraft symbol on the runway based on the runway occupancy status information.