System and method for calibrating on-board aviation equipment
First Claim
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1. A method comprising:
- determining a current location of an aircraft using information received from an on-board Global Positioning System (GPS) system;
retrieving a location of an automatic direction finder (ADF) station from a navigation database;
determining an actual bearing from the aircraft to the ADF station using the current location of the aircraft determined by the GPS system and the location of the ADF station retrieved from the navigation database;
moving the aircraft to a plurality of headings;
determining an ADF bearing from the aircraft to the ADF station at each of the plurality of headings to which the aircraft is moved;
calculating an error between the actual bearing and each of the determined ADF bearings; and
generating an error function based at least in part on the calculated errors.
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Abstract
A method and system are provided for calibrating on-board aviation equipment. An actual bearing from an aircraft to an automatic direction finder (ADF) station is determined. The aircraft is moved to a plurality of headings. An ADF bearing is determined from the aircraft to the ADF station at each of the plurality of headings. An error between the actual bearing and the ADF bearing at each heading is calculated. Then, an error function as a function of the heading of the aircraft is generated based at least in part on the calculated error.
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Citations
20 Claims
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1. A method comprising:
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determining a current location of an aircraft using information received from an on-board Global Positioning System (GPS) system; retrieving a location of an automatic direction finder (ADF) station from a navigation database; determining an actual bearing from the aircraft to the ADF station using the current location of the aircraft determined by the GPS system and the location of the ADF station retrieved from the navigation database; moving the aircraft to a plurality of headings; determining an ADF bearing from the aircraft to the ADF station at each of the plurality of headings to which the aircraft is moved; calculating an error between the actual bearing and each of the determined ADF bearings; and generating an error function based at least in part on the calculated errors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for calibrating on-board aviation equipment comprising:
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an aircraft; and a computing system on-board the aircraft configured to; determine a current location of the aircraft using information received from an on-board Global Positioning System (GPS) system; retrieve a location of an automatic direction finder (ADF) station from a navigation database; determine an actual bearing from the aircraft to the ADF station using the current location of the aircraft determined by the GPS system and the location of the ADF station retrieved from the navigation database; calculate error between the actual bearing from the aircraft to the ADF station and a plurality of ADF bearings from the aircraft to the ADF station, each ADF bearing being associated with a respective one of a plurality of headings of the aircraft; and generate an ADF error function based at least in part on the calculated error. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system for calibrating an automatic direction finder (ADF) receiver comprising:
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an aircraft; an ADF receiver on-board the aircraft to receive a signal transmitted from an ADF station; and a computing system on-board the aircraft and in operable communication with the ADF receiver, the computing system configured to; determine a current location of the aircraft using information received from an on-board Global Positioning System (GPS) system; retrieve a location of the ADF station from a navigation database; determine an actual bearing from the aircraft to the ADF station using the current location of the aircraft determined by the GPS system and the location of the ADF station retrieved from the navigation database; determine an ADF bearing from the aircraft to the ADF station for each of a plurality of headings of the aircraft using the ADF receiver; calculate an error between the actual bearing and the ADF bearing for each of the plurality of headings; and generate an ADF error function based at least in part on the calculated errors. - View Dependent Claims (18, 19, 20)
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Specification