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    Minoru Saba (minorusaba@toad.social)'s status on Thursday, 04-Dec-2025 11:00:13 JSTMinoru SabaMinoru Saba

    "...the satellite will complete Japan's seven-orbiter geolocation system, called the Quasi-Zenith Satellite System [which] is key to providing uninterrupted services without relying on satellites from other countries"
    https://mainichi.jp/english/articles/20251202/p2g/00m/0sc/006000c

    🔸Orbits of QZSS satellites result in "ground traces [that] are asymmetrical figure-8 patterns"
    https://en.wikipedia.org/wiki/Quasi-Zenith_Satellite_System
    #Japan #QZSS #satellite

    In conversationabout 3 months ago from toad.socialpermalink

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    1. Domain not in remote thumbnail source whitelist: cdn.mainichi.jp
      Japan to launch satellite in Feb. to complete 7-orbiter geolocation system - The Mainichi
      from https://www.facebook.com/themainichi/
      TOKYO (Kyodo) -- Japan's space agency will launch a satellite in February to enable the country to stably operate its own geolocation system akin to t
    2. Domain not in remote thumbnail source whitelist: upload.wikimedia.org
      Quasi-Zenith Satellite System
      The Quasi-Zenith Satellite System (QZSS) (Japanese: 準天頂衛星システム, Hepburn: juntenchō eisei shisutemu), also known as Michibiki (みちびき, "guidance"), is a regional navigation satellite system (RNSS) and a satellite-based augmentation system (SBAS) developed by the Japanese government to enhance the United States-operated Global Positioning System (GPS) in the Asia-Oceania regions, with a focus on Japan. The goal of QZSS is to provide highly precise and stable positioning services in the Asia-Oceania region, compatible with GPS. Four-satellite QZSS services were available on a trial basis as of 12 January 2018, and officially started on 1 November 2018. A satellite navigation system independent of GPS is planned for 2023 with seven satellites. In May 2023 it was announced that the system would expand to eleven satellites. History In 2002, the Japanese...
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