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<p>A dual-comb absolute-ranging payload delivered to China’s Tiangong space station aboard Tianzhou-9 has demonstrated sustained on-orbit interferogram acquisition in an extravehicular environment. The system reports 13 µm precision at a 1 kHz update rate and stable operation over months, advancing traceable space metrology for formation flying and deployable observatories.</p>

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Dual-comb absolute ranging reaches orbit

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月20日

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  • Yuxuan Ma,
  • Yingying Gu,
  • Siyu Zhou,
  • Liheng Shi,
  • Yongchun Xie,
  • Guanhao Wu

摘要

A dual-comb absolute-ranging payload delivered to China’s Tiangong space station aboard Tianzhou-9 has demonstrated sustained on-orbit interferogram acquisition in an extravehicular environment. The system reports 13 µm precision at a 1 kHz update rate and stable operation over months, advancing traceable space metrology for formation flying and deployable observatories.