OF MEASUREMENT OF COORDINATES OF STAR IMAGE WITH SUBPIXEL ACCURACY FOR
SPACE-BASED STAR TRACKERS
Scientific and Production Association “Lepton”
The paper is
received on April 27, 2015
Abstract. In this article described the problem of measurement of star image
with subpixel accuracy for space-based Star tracker. The cross-correlation
function method and most usable The Center of gravity method were considered.
New method of analytical measurement has been suggested. This method do not
require big calculations and step of image processing less than one pixel.
Comparative analysis of described methods was performed.
Keywords: star trackers, centroid methods, center of gravity.