Spacecraft Angular State Estimation After Sensor Failure

I.Y. Bar-Itzhack (Israel) and R.R. Harman (USA)


Attitude Determination, Angular Rate Computation, Kalman Filtering, Sensor Failure.


This work describes two algorithms for computing the angular rate and attitude in case of a gyro failure in a spacecraft (SC) with a special mission profile. The source of the problem is presented, two algorithms are suggested, an observability study is carried out, and the efficiency of the algorithms is demonstrated.

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