2025/02/18 by Gerard T. Schuster, Jing Li, Schuster, Gerard +1
Engineering · #Advanced SAR Imaging Techniques #FOS: Physical sciences #Geophysics (physics.geo-ph)
paper · pdf · doi:10.48550/arxiv.2502.12653
openalex publication_date 2025/02/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is commonly believed that it is infeasible to estimate the phase velocity of a surface wave with a recording aperture less than λ/2 in length, where λ is the horizontal wavelength of the propagating wave. We show both theoretically and computationally that the width of the recording aperture can be extended using the recorded data at longer time intervals. This leads to more reliable estimates of apparent velocities for both body waves and surface waves. Here, we assume single-mode plane waves sweeping across the recording array with a linear moveout.