A real-time global positioning system (GPS) Kalman filter has been developed to support automated rendezvous with the International Space Station (ISS). The filter is integrated with existing Shuttle rendezvous software running on a 486 laptop computer under Windows. In this work, we present real-time and postflight results achieved with the filter on STS-69. The experiment used GPS data from an Osborne/Jet propulsion Laboratory TurboRouge receiver carried on the Wake Shield Facility (WSF) free flyer and a Rockwell Collins 3M receiver carried on the Orbiter. Real time filter results, processed onboard the Shuttle and replayed in near-time on the ground, are based on single vehicle mode operation and on 5 to 20 minute snapshots of telemetry provided by WSF for dual-vehicle mode operation. The Orbiter and WSF state vectors calculated using our filter compare favorably with precise reference orbits determined by the University of Texas Center for Space Research. The lessons learned from this experiment will be used in conjunction with future experiments to mitigate the technology risk posed by automated rendezvous and docking to the ISS.


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    Title :

    Flight Test Results from Real-Time Relative Global Positioning System Flight Experiment on STS-69


    Contributors:
    Y. W. Park (author) / J. P. Brazzel (author) / J. R. Carpenter (author) / H. D. Hinkel (author) / J. H. Newman (author)

    Publication date :

    1996


    Size :

    28 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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