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Preliminary Study of Satellite Attitude Determination for the LANDSAT 7 Spacecraft
NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
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This report presents the results of an error analysis for satellite attitude determination for the LANDSAT 7 spacecraft. The purpose of this study was 1 to evaluate the contribution of dual-antenna Global Positioning System GPS measurements to spacecraft attitude uncertainty and 2 to determine if spacecraft attitude could be determined to an accuracy that would allow direct mapping from LANDSAT 7 stereo pair imagery. Although preliminary, the results indicate that GPS measurements have the potential to improve spacecraft attitude if certain technical goals can be achieved associated with GPS instrumentation. The useability of stand-alone stereo pairs for direct mapping, satisfying Defense Mapping Agency DMA product standards, is questionable due to correlated stellar sensor errors. GPS, LANDSAT 7 spacecraft, Satellite Attitude Determination.
APPROVED FOR PUBLIC RELEASE