Abstract
This talk describes a method of estimating the position and velocity of surface waves that uses the delay and Doppler shift of observed scatter arrivals, and does not need a receiving array with high spatial resolution. This method is demonstrated using data collected during the at-sea KAM11 experiment, similar to data that has been previously analyzed using Doppler insensitive linear frequency modulated waveforms [e.g., M. Badiey, A. Song, and K. Smith, J. Acoust. Soc. Am. 132(4), EL290–EL295 (2012)]. An analysis of Doppler sensitive maximum length sequence transmissions is presented for the same experimental geometry as the previous studies. The Doppler sensitive analysis shows additional scatter arrivals previously not reported with distinct Doppler shifts. A simple travel time argument is then used to explain the observed Doppler of the scatter arrivals, and infer the time-varying position of waves traveling along the sea surface.
Published Version
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