Other
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993stin...9671588e&link_type=abstract
Technical Report, Jena-Optronik G.m.b.H. Germany
Other
Ccd Cameras, Satellite Observation, Algorithms, Satellite-Borne Instruments, Weighting Functions, Pixels, Mathematical Models, Experimentation, Proving, Accuracy, Optoelectronic Devices, Centroids, M Stars
Scientific paper
Main subject of the project was the verification of basic findings of the preceeding study 'Theoretical and experimental basic investigations on high-precision optoelectronic measurement of the fixed star sky by satellite-borne instruments', aimed at the improvement of the accuracy of star sensors which employ CCDs (charge coupled devices) as optoelectronic receivers. As a central tool for improving measurement accuracy, a model based algorithm for precise subpixel interpolation was investigated. The model algorithm was verified in single CCD matrices (employing the Modular Measurement System MMS) and in an ASTRO 1 M star sensor. Additional approaches for improving measurement accuracy of star sensors were investigated quantitatively by mathematical estimates. Another subject of this project was the extension and modification of Jena-Optronik's Modular Measurement System MMS for the measurement of the pixel weighting function of CCDs and the point spread function of lens systems, as necessary for the aforementioned measurements. In the concluding phase of the project, approaches to the implementation of accuracy improving methods in star sensors were investigated and a proposal for realization of a high precision star sensor in a succeeding project was worked out.
Elstner C. F.
Schmidt Ulrich
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