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Path: SpacecraftEstimation/StellarAttDet
% Stellar attitude determination using the Unscented Kalman Filter
Get the default data structure by typing just the function name.
RHSFun is not used if integrator is used.
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Form:
[q, b, ukf] = StellarAttDetUKF( angInc, q, dT, b, p, qBToS,
starDataMeas, starData, fScale, rStar, ukf )
ukf = StellarAttDetUKF
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Inputs
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angInc (3,1) Angular increments from the gyro
q (4,1) Attitude quaternion
dT (1,1) Time step
b (3,1) Gyro bias
qBToS (4,1) Quaternion from body to sensor axes
starDataMeas (2,m) Vector of [xloc;yloc] from the star sensor
starData (1,1) Star Data
.starMatrix (4,n) Star catalog containing n stars stored as [intensity;u]
.starID (1,m) Identified stars
fScale (1,1) Sensor scale factor
rStar (1,1) Covariance matrix term for a star measurements
ukf (.) UKF Data structure
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Outputs
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q (4,1) Attitude quaternion
b (3,1) Bias
ukf (.) UKF Data structure
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Common: Estimation/KFInitialize Common: Estimation/UKFUpdate Common: Estimation/UKFWeight Common: Quaternion/QFromDQ SpacecraftEstimation: StellarAttDet/AttProp SpacecraftEstimation: StellarAttDet/DSTM SpacecraftEstimation: StellarAttDet/StarMeasurementUKF
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