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SUPPORT SITE |
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SUPPORT SITE |
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Path: SC/Sensor
% Simulates a single axis suns sensor
Since version 1.
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Form:
[cEP, dTCEP, uSunBodyOld, angleSSA] = SSA( qECIToBody, uSunECI,
uSunBodyOld, dT )
[cEP, dTCEP, uSunBodyOld, angleSSA] = SSA( qECIToBody, uSunECI,
uSunBodyOld, dT, boresight,
aperture, aperXBore, cosFOV,
angleSSAOld )
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Inputs
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qECIToBody (4,1) Quaternion from the inertial to the body frame
uSunECI (3,1) Sun unit vector in the ECI frame
uSunBodyOld (3,1) Last value of the sun in the body frame
dT Time step
boresight (3,1) Sensor boresight axis
aperture (3,1) Sensor aperture axis
aperXBore (3,1) Aperture X boresight
cosFOV (1,1) Cosine of the field of view angle
angleSSAOld (1,1) Last sun sensor angle
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Outputs
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cEP (1,1) 1 if sun just passed through the sensor boresight/
spin-axis plane
dTCEP (1,1) Time since the CEP
uSunBodyOld (3,1) Last value of the sun in the body frame
angleSSA (1,1) Angle between the boresight axis and the sun vector
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Common: Quaternion/QForm
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