Method and system for estimating aircraft course
First Claim
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1. A computer-implemented method of estimating a course of an aircraft comprising:
- receiving a time series of location data from at least one of a global positioning system device or an inertial navigation system device on an aircraft indicating a plurality of locations along a route taken by the aircraft and calculating a time series of course estimate data from the time series of location data;
defining a trajectory function from the time series of course estimate data for representing a track of the aircraft;
fitting the trajectory function to at least a portion of the time series of location data;
defining a position that identifies the location of the aircraft along the route;
projecting the defined position onto the trajectory function;
estimating a course of the aircraft as being a tangent of the trajectory function at the projected defined position; and
outputting for display the course of the aircraft estimated as being the tangent of the trajectory function at the projected defined position.
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Abstract
A method of estimating a course of an aircraft includes: receiving a time series of location data indicating a plurality of locations along a route take by an aircraft; defining a trajectory function for representing a path of the aircraft; fitting the trajectory function to at least a portion of the time series; defining a position that identifies the location of the aircraft along the route; projecting the defined position onto the trajectory function; and estimating a course of the aircraft as being a tangent of the trajectory function at the projected defined position.
23 Citations
20 Claims
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1. A computer-implemented method of estimating a course of an aircraft comprising:
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receiving a time series of location data from at least one of a global positioning system device or an inertial navigation system device on an aircraft indicating a plurality of locations along a route taken by the aircraft and calculating a time series of course estimate data from the time series of location data; defining a trajectory function from the time series of course estimate data for representing a track of the aircraft; fitting the trajectory function to at least a portion of the time series of location data; defining a position that identifies the location of the aircraft along the route; projecting the defined position onto the trajectory function; estimating a course of the aircraft as being a tangent of the trajectory function at the projected defined position; and outputting for display the course of the aircraft estimated as being the tangent of the trajectory function at the projected defined position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for estimating a course of an aircraft, the system comprising a processor, a memory, and a display, wherein said processor is configured to:
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receive a time series of location data from at least one of a global positioning system device or an inertial navigation system device on an aircraft indicating a plurality of locations along a route taken by the aircraft and calculate a time series of course estimate data from the time series of location data; define a trajectory function from the time series of course estimate data for representing a track of the aircraft; fit the trajectory function to at least a portion of the time series of location data; define a position that identifies a location of the aircraft along the route; project the defined position onto the trajectory function; estimate a course of the aircraft as being a tangent of the trajectory function at the projected defined position; and display the course of the aircraft estimated as being the tangent of the trajectory function at the projected defined position on the display. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification