Session

Technical Session I: Advanced Technologies I

SSC13-I-10.pdf (1361 kB)
Presentation Slides

Abstract

The error of the attitude of many modern star trackers is determined by systematic errors. In this paper we consider the effect of random and different systematic errors of sensors on the attitude accuracy of star trackers. The results of modeling of principal systematic errors, first of all, due to underestimation of the dark current inhomogeneity, are discussed. It is shown that only this systematic error can decrease the attitude accuracy of a star tracker by a factor of 3–4. Methods of taking into account the main systematic errors and of the decreasing their effect on the star trackers attitude accuracy are proposed.

Share

COinS
 
Aug 12th, 4:46 PM

On Random and Systematic Errors of a Star Tracker

The error of the attitude of many modern star trackers is determined by systematic errors. In this paper we consider the effect of random and different systematic errors of sensors on the attitude accuracy of star trackers. The results of modeling of principal systematic errors, first of all, due to underestimation of the dark current inhomogeneity, are discussed. It is shown that only this systematic error can decrease the attitude accuracy of a star tracker by a factor of 3–4. Methods of taking into account the main systematic errors and of the decreasing their effect on the star trackers attitude accuracy are proposed.