Method for providing terrain alerts and display utilizing temperature compensated and GPS altitude data
AssigneeUniversal Avionics Systems Corporation
InventorsRicardo Ardila, Dean L. Farnham, Nick Feng, Robert Scott Ferguson, Patrick Gerald Krohn, Steven J. Moss
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Abstract
A method of accounting for errors in the altitude reporting of a terrain alert and warning system (TAWS) is disclosed wherein errors due to non-standard atmospheric conditions, incorrect altimeter setting and air data computer (ADC) sensor error are detected and corrected for by compensating ADC altitudes for cold temperatures as well as using global positioning system (GPS) altitude data to confirm the accuracy of the ADC altitude information at all times.
Claims15
A method of compensating for an incorrect measurement of altitude of an aircraft comprising:
- displaying a flight plan of an aircraft consistent with vertical constraints from a flight management system (FMS);
- displaying an ownship position of the aircraft consistent with an incorrect measurement of altitude of the aircraft;
- displaying the ownship position in reference to the flight plan consistent with vertical deviation from a primary flight display (PFD);
- and
- compensating for incorrect measurement of altitude by displaying aircraft terrain on a scale consistent with actual barometric altitude thereby accurately displaying ownship position and flight plan in reference to a terrain.
A method of compensating for non-standard atmospheric conditions of an aircraft comprising:
- displaying a flight plan of an aircraft consistent with vertical constraints from a flight management system (FMS);
- displaying an ownship position of the aircraft consistent with vertical deviation from a primary flight display (PFD);
- and
- compensating for non-standard atmospheric conditions by displaying aircraft terrain on a scale consistent with actual barometric altitude thereby accurately displaying ownship position and flight plan in reference to a terrain.
Dependencies are inferred from the claim text.