Method for determining drift with a digital compass
AssigneeTrimble Navigation Limited
InventorsJames C. Green, Richard Williams
Life of this patent
Estimating the term…
Abstract
An integrated position and direction system and method thereof for determining drift. The integrated position and direction system comprises a satellite positioning system and a digital compass. The satellite positioning system is used for determining position and heading, and the digital compass is used for determining direction. An amount of drift can be determined using the heading and the direction. Knowing the amount of drift, a course compensating for the drift can be determined. Thus, a craft that has drifted from its planned course can be directed to a course that will allow it to reach its intended destination.
Claims16
An integrated position and direction system comprising:
- a digital compass adapted to determine direction;
- a satellite positioning system coupled to said digital compass, said satellite positioning system comprising:
- a receiver adapted to receive satellite position determining signals;
- and
- a controller coupled to said receiver, said controller for determining position and for determining heading;
- wherein said satellite positioning system is adapted to determine an amount of drift using said heading and said direction and to determine a direction of drift using said heading and said direction;
- and
- a display coupled to said satellite positioning system, said display for indicating said amount of drift and said direction of drift.
An integrated position and direction system comprising:
- a satellite positioning system adapted to receive satellite position determining signals, said satellite positioning system also adapted to determine position and heading;
- a digital compass coupled to said satellite position system, said digital compass adapted to determine direction;
- and
- a controller coupled to said satellite positioning system and said digital compass, said controller for controlling the operations of said integrated position and direction system and said digital compass, wherein said controller is adapted to determine a direction of drift using said heading and said direction;
- wherein said controller is also adapted to determine an amount of drift using said heading and said direction;
- and
- a display coupled to said controller, said display for indicating said amount of drift and said direction of drift.
A method of navigation using an integrated position and direction system, said method comprising:
- a) determining heading using a satellite positioning system;
- b) determining direction using a digital compass;
- c) determining drift using said heading and said direction;
- and
- d) displaying an amount of drift and a direction of drift on a display device.
A method of automatic navigation using an integrated position and direction system coupled to a navigation control system, said method comprising:
- a) determining heading of a craft using a satellite positioning system of said integrated position and direction system;
- b) determining direction of said craft using a digital compass of said integrated position and direction system;
- c) determining drift of said craft using said heading and said direction;
- d) determining a course compensating for said drift;
- e) directing said craft to follow said course using said navigation control system;
- and
- displaying an amount of drift and a direction of drift.
Dependencies are inferred from the claim text.