Star centroiding results no longer denote initial locations of star centroid because of the smearing effect. This locational error increases significantly when star sensors work in non-uniform rotation cases. Herein, a novel method is proposed to compensate this error. By taking angular acceleration into consideration, a more accurate stellar trajectory model is deduced first, followed by the derivation of compensation formula. Simulation results show that the proposed method can effectively compensate the extracted centroids to their initial locations. The systematic error caused by the proposed method is less than 0.05 pixels when the angular acceleration is 6.0 °/s2, which is negligible from engineering perspective.
Dynamic smearing compensation method for star centroding of star sensors
2016-06-01
2830876 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Rolling Shutter Compensation for Star Trackers
AIAA | 2012
|Star sensors and harsh environment
Tema Archiv | 2003
|Star Sensors and Harsh Environment
British Library Conference Proceedings | 2003
|Rolling Shutter Compensation for Star Trackers
British Library Conference Proceedings | 2012
|Compensation Method of Dynamic Angle Measurement for Missile-Borne Star Sensor
Springer Verlag | 2021
|