An extension boom is to be installed on the starboard side of the Space Shuttle Orbiter (SSO) payload bay for thermal tile inspection and repairing. As a result, the Space Shuttle payload bay Ultra High Frequency (UHF) antenna will be under the boom. This study is to evaluate the Space Shuttle UHF communication performance for antenna at a suitable new location. To insure the RF coverage performance at proposed new locations, the link margin between the UHF payload bay antenna and Extravehicular Activity (EVA) Astronauts at a range distance of 160 meters from the payload bay antenna was analyzed. The communication performance between Space Shuttle Orbiter and International Space Station (SSO-ISS) during rendezvous was also investigated. The multipath effects from payload bay structures surrounding the payload bay antenna were analyzed. The computer simulation tool based on the Geometrical Theory of Diffraction method (GTD) was used to compute the signal strengths.


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    Title :

    Space Shuttle UHF Communications Performance Evaluation


    Contributors:
    S. U. Hwu (author) / Y. C. Loh (author) / Q. D. Kroll (author)

    Publication date :

    2005


    Size :

    12 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Space shuttle UHF communications performance evaluation

    Hwu, S.U. / Loh, Y.-C. / Tran, T.T. et al. | IEEE | 2004



    Space Shuttle UHF communications performance evaluation

    Hwu, S.U. / Loh, Y.C. / Dobbins, J.A. et al. | IEEE | 2005


    Space Shuttle UHF Communications Performance Evaluation

    Hwu, Shian U. / Loh, Yin-Chung / Kroll, Quin D. et al. | NTRS | 2004


    Space Shuttle UHF Communications Performance Evaluation

    Hwu, S. / IEEE / AIAA | British Library Conference Proceedings | 2004