China sends a new Beidou satellite into space in April. Beidou and other global navigation systems depend on signals from command centres on the ground. Photo: Xinhua

Chinese scientists test satellite positioning technology that can work independently in space

  • Research team says probe managed to calculate its own location by using the X-ray from a small, distant star for reference
  • Its margin of error was just 3.3km – more accurate than a similar Nasa experiment last year
Topic |   China science

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China sends a new Beidou satellite into space in April. Beidou and other global navigation systems depend on signals from command centres on the ground. Photo: Xinhua
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