113 km absolute ranging with nanometer precision · HackerPapers discussions

113 km absolute ranging with nanometer precision — mentioned by sitkack

Fri, 17 Jan 2025 00:18:47 GMT

I skipped the article, went directly to the paper https://arxiv.org/abs/2412.05542 It is very readable. This measures absolute distance. LIGO was its own thing https://en.wikipedia.org/wiki/LIGO many people, big vacuum. Two sites, one by Hanford the other in a swamp https://www.ligo.caltech.edu/WA https://www.ligo.caltech.edu/LA

Paper and discussion history. A mention is not an endorsement.

113 km absolute ranging with nanometer precision — mentioned by westurner

Tue, 14 Jan 2025 05:48:36 GMT

> optical frequency comb "113 km absolute ranging with nanometer precision" (2024) https://arxiv.org/abs/2412.05542 : > two-way dual-comb ranging (TWDCR) approach > The advanced long-distance ranging technology is expected to have immediate implications for space research initiatives, such as the space telescope array and the satellite gravimetry

Paper and discussion history. A mention is not an endorsement.