Attitude determination system and method

Details Attitude determination system and method Attitude determination system and method

2006-01-17

2006-01-17

Porta, David (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C356S139030, C244S171000, C702S153000

Reexamination Certificate

active

06987257

ABSTRACT:
An attitude determination system and method is provided that includes at least two sensor sets. Each sensor set is configured to detect electromagnetic radiation, such as light of a known frequency. Specifically, each sensor set is configured to detect electromagnetic radiation from a one of a plurality of point sources, where each of the plurality of point sources emits electromagnetic radiation of a different frequency. Each sensor set includes at least three sensors, with each of the three sensors having a different orientation. The three sensors in the sensor set are used to determine a relative orientation of the vehicle with respect to one of the point sources. The at least two sensor sets in the system determine the relative orientation with respect to at least two point sources. By placing the sensors on a vehicle and knowing the direction to the point sources in a reference frame coordinate system, the orientation of the vehicle with respect to this reference frame can be estimated.

REFERENCES:
patent: 4769531 (1988-09-01), Malek
patent: 5393970 (1995-02-01), Shau et al.
patent: 6597443 (2003-07-01), Boman
patent: 6757068 (2004-06-01), Foxlin
patent: 0930512 (1999-07-01), None
patent: WO 02/39062 (2002-05-01), None

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