Absolute ranging over 113 km with nanometer precision.

ABSTRACT: Accurate long-distance ranging is crucial for diverse applications, including satellite formation flying, very-long-baseline interferometry, gravitational-wave observations, geographical research, etc. The integration of the time-of-flight measurement with phase interference in the dual-comb method enables high-precision ranging with a rapid update rate and an extended ambiguity range. Pioneering experiments have achieved remarkable absolute ranging precision over short paths. However, achieving similar precision over longer distances remains technically challenging due to high transmission loss and noise. In this article, we propose a bistatic dual-comb ranging approach that enables successful ranging over a distance of 113 km. We employ air dispersion analysis and a synthetic repetition

SUBMITTER: Chen YW 

PROVIDER: S-EPMC12629240 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature