An Error Analysis of 2-Dimensional Attitude Determination System Using Global Positioning System

Chansik PARK  Ilsun KIM  

IEICE TRANSACTIONS on Communications   Vol.E83-B   No.6   pp.1370-1373
Publication Date: 2000/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Satellite and Space Communications
GPS,  attitude determination,  carrier phase,  

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An analytical error characteristics of GPS compass which determines heading and elevation of the vehicle using carrier phase measurements from 2 antennae is given. It is also shown that to obtain more precise heading, longer baseline along the vehicle is preferred and the accuracy of heading is always better than that of elevation since the vertical measurement uncertainty caused by geometry of satellites affects only on that of elevation. These results can be applied as basic directions for attitude determination: to what direction should the baseline be located to minimize the error, which satellites should be selected to minimize the error.