Path: SC/Sensor
% Returns digital sun sensor measurements.
The sensor frame assumes that z is normal to the focal plane.
The field "kQ" selects the quaternion from the state vector x.
The outputs are angle about x (roll) and y (pitch) in the sensor frame.
The sun must be in the +z hemisphere.
If no inputs are given it will return the default data structure.
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Form:
y = MeasSunSensorDigital( x, d )
d = MeasSunSensorDigital
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Inputs
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x (:,1) State vector
d (1,1) Data structure
.kQ (1,4) Quaternion indices
.qBToS (4,n) Body to sun sensor quaternion
.bias (2,n) Bias
.scale (2,n) Scale factor
.noise (2,n) 1 sigma noise
.fOV (1,1) Field of view
.quantization (1,1) Least significant bit
.uSunECI (3,1) Sun unit vector
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Outputs
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y (n,1) Measurements
valid (1,1) True or vales
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Common: Quaternion/QForm
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