Tag: antenna

  • ESA’s Kiruna celebrates 30 years of space excellence

    ESA’s Kiruna celebrates 30 years of space excellence

    September 2020 – ESA’s Kiruna ground station in northern Sweden celebrates 30 years of space excellence. Near the top of the world, at a latitude of almost 68° north and sited 38 kilometres east of Kiruna town, the Kiruna ground station has been operational for 30 years. Ideally positioned to support polar-orbiting missions, the station is a crucial gateway for much of the data enabling us to study our planet’s oceans, water and atmosphere, forecast weather and understand the rapid advance of climate change. With its two sophisticated antennas, it also supports some of ESA’s scientific missions such as Integral and Cluster. The station is part of ESA’s Estrack network linking all Agency missions to the ESOC mission control centre in Darmstadt, Germany.

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  • Large antenna deployment

    Large antenna deployment

    A 5 m-diameter antenna reflector, designed for orbital operations, seen during a test deployment during ESA’s latest Large Deployable Antenna Workshop.

    Large-scale antenna reflectors are increasingly required for telecommunications, science and Earth observation missions.

    This metal mesh reflector has a ‘double pantograph’ design to form a deployable ring. Once deployed it tensions two opposing, but connected, parabolic shaped nets, one on the top and one on the bottom.

    Read more here: http://www.esa.int/spaceinimages/Images/2016/11/Large_antenna_deployment

  • What’s the Physics Behind Texting?

    What’s the Physics Behind Texting?

    What’s the science behind texting? When you hit send, how does your message leave your phone and make the journey to your friend’s phone?
    Subscribe: http://youtube.com/whatthephysics?sub_confirmation=1
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    CREDITS:

    Host, Writer, Animator, Editor:
    Greg Kestin

    Special thanks:
    Tyler Howe
    Julie Elsky
    Lissy Herman
    Patrick Mitran
    Jerry Gibson
    Lauren Aguirre
    Kristine Allington
    Anna Rothschild
    Allison Eck
    Ari Daniel
    Lauren Miller

    From the producers of PBS NOVA
    © WGBH Educational Foundation

    Funding provided by FQXi

    SCIENTIFIC NOTES:
    – Messages can also be encoded by altering the phase of the signal being sent from the antenna.
    – Phones use several (~8) frequencies at one time, and since there are limited frequencies (~100) for the tower to use, manages the sharing of them.

    MEDIA CREDITS:

    Music provided by APM:
    Curio C

    Sound effects:
    Freesound.org

    Images:
    Two tree cell towers (Devra)
    Top of cell tower (Ervins Strauhmanis)

    Stock footage from Pond5:
    digital-computer-brain-binary
    bangkok-city-skyline-aerial-da
    aerial-fly-over-green-forest-c