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Updated: Jun 17, 2026

Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method
Published on: September 3, 2021
Accuracy of the deterministic travel time retrieval from cross-correlations of non-diffuse ambient noise
1CIRES, University of Colorado, NOAA/Earth System Research Laboratory, DSRC, Mail Code R/PSD, 325 Broadway, Boulder, Colorado 80305-3328, USA. oleg.godin@noaa.gov
Abstract:
Measurements of long-range cross-correlations of ambient noise underlie acoustic noise interferometry, a promising technique for passive remote sensing of the environment. Previously established simple, exact relations between deterministic Green's functions and the cross-correlation function of perfectly diffuse noise do not necessarily hold for noise fields in the ocean and atmosphere. Here, the method of a stationary phase is applied to study the information content of the cross-correlation function of non-diffuse noise and to quantify the accuracy of passive measurements of the acoustic travel times.
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