Orthogonal polar coordinate system to accommodate polar navigati

Details Orthogonal polar coordinate system to accommodate polar navigati Orthogonal polar coordinate system to accommodate polar navigati

1993-04-29

1995-09-05

Chin, Gary

Boots, shoes, and leggings

364445, 364449, 73178R, G06F16500

Patent

active

054484863

ABSTRACT:
A method for navigating an aircraft around the earth's polar region comprises the steps of determining if the aircraft is in one of the polar regions of the earth's traditional axis system. If the aircraft is not in one of the polar regions, aircraft parameters, including speed and heading, are calculated relative to the traditional axis system. If the aircraft is in one of the polar regions the traditional axis system is rotated to form a new axis system, such that the aircraft position in the new axis system is in an essentially rectilinear area of the new axis system. The aircraft parameters are transformed, including aircraft position, speed, and heading, into parameters relative to the new axis system. New parameters are calculated with respect to the new axis system, and then the new parameters are translated into parameters with respect to the earth's traditional axis system. Commands are calculated and out-putted, and the aircraft is steered in accordance with the commands, the commands having less error as a result of utilizing parameters generated with respect to the new axis system, thereby navigating in the polar region with greater accuracy.

REFERENCES:
patent: 2749035 (1956-06-01), Gray
patent: 3049299 (1962-08-01), Beck
patent: 4104722 (1978-08-01), Evans
patent: 4930085 (1990-05-01), Kleinschmidt
patent: 5172323 (1992-12-01), Schmidt

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