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An extended Kalman filtering technique is addressed for gyroless spacecraft to estimate the angular rate and attitude vectors of spacecraft and the alignment of reaction wheels using only vector measurement. In this work, it is assumed that the angular momentum and control torque of the reaction wheels are measurable and usable for the filter formulation. Because there is no angular rate sensor, a...
This paper presents the design of algorithms to estimate the mass property, specially the moment of inertia, for the gyroless spacecraft. The gyro has several problems such as high price and frequent breakdown, but the other sensors could not replace gyro because of its update rate. However, CMOS-APS-based star tracker which is recently developed can give the vector observations in high update rate...
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