Klaus Janschek, Salavat Kusimov, Albert Sultanov, Valeri Tchernykh, Sergey Dyblenko, Anton Kisselev: Hybrid Optoelectronic Information System for The Satellite Coordinates Determination CSIT 2000 : 9-15
The main low-level tasks of the landmark navigation are landmarks recognition and determination of navigation angles in spacecraft body fixed coordinate frame.
To save the digital processing resources onboard and to minimise the processing time, we propose to use the onboard optical correlator for fast matching of the current landmark images from onboard camera with ones from pre-recorded landmark database to recognise the landmarks and measure the navigational angles in satellite body fixed co-ordinate frame. The optical correlator is an opto-electronic device, capable of fast optical determination of 2D correlation function of two images.
In the series of simulated experiments the accuracy of images matching was estimated in presence of image distortions and noise typical for high resolution Earth observation mission. For the series of simulated experiments the root mean square error of 0.22 pixel was obtained. It shows the possibility to obtain the sub-pixel accuracy of images matching in real conditions under noisy environment.
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Heinz Schweppe and Yuri S. Kabalnov (Eds.): CSIT'2000, Proceedings of 2nd International Workshop on Computer Science and Information Technologies, September 18-23, 2000, Ufa, Russia. USATU Publishers & JurInfoR-MSU Publishing 2000, ISBN 5-86911-312-1