Minimum safe altitude display

Details Minimum safe altitude display Minimum safe altitude display

B - Operations, Transporting

64

D

B64D 43/00 (2006.01)

Patent

CA 2726765

A method for indicating a relative altitude of a vehicle includes obtaining, from at least one navigation instrument, a current geographic position and a current altitude of the vehicle. One or more geographic areas substantially surrounding the current geographic position is defined. A minimum safe altitude (MSA) is determined for each geographic area based at least in part on a minimum clearance height and a maximum terrain elevation or a maximum obstruction elevation within the geographic area. A relative altitude representing the current altitude of the vehicle relative to the MSA for each geographic area is determined. A relative altitude indicator is displayed via a presentation device for each geographic area based at least in part on the corresponding relative altitude. A relative altitude indicator corresponding to an MSA below the current altitude is graphically distinguished from a relative altitude indicator corresponding to an MSA above the current altitude.

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