Attitude determination system for yaw-steering spacecraft

Details Attitude determination system for yaw-steering spacecraft Attitude determination system for yaw-steering spacecraft

2006-07-14

2010-11-16

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Aeronautical vehicle

C244S164000

Reexamination Certificate

active

07835826

ABSTRACT:
An attitude determination system is provided for determining attitude values of a yaw-steering spacecraft, and includes a rate sensor, at least one attitude sensor, and a processor operable to receive measured spacecraft body rates from the rate sensor, to receive measured spacecraft attitude values from the at least one attitude sensor, and to calculate estimated spacecraft attitude values based on the measured spacecraft body rates and the measured spacecraft attitude values by using a Kalman filter that includes a plurality of attitude estimate error states, a plurality of gyro bias states, and a plurality of commanded rate dependent gyro error states.

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