This paper first introduces two methods to speed up the acquisition, namely, the Peak Finder (PF), which uses two integer vectors, and the Run Length Encode (RLE), which uses an iterative approach applied to an adjacent star segment table and performs acquisition and centroiding simultaneously. Regarding centroiding, the recursive functions, are introduced. Recursive and ellipsoidal masks present centroiding accuracy gains with respect to the standard squared mask, which is more affected by the mask edge errors. Finally, two Gaussian Best-Fitting methods to increase centroiding accuracy, are introduced and compared versus standard Center-Of-Mass approach.
name of conference
International Conference on Dynamics and Control of Systems and Structures in Space