Now showing items 1-3 of 3

    • Doppler passive fathometry 

      Harrison, Chris H. (CMRE, 2019/05)
      Passive fathometry is a technique whereby broadband ambient ocean noise received on an array of hydrophones is averaged and cross-correlated to produce a sub-bottom profile [Siderius, Harrison, and Porter (2006). J. Acoust. ...
    • Glider-based seabed characterization using natural-made ambient noise 

      Nielsen, Peter L.; Siderius, Martin; Muzi, Lanfranco (CMRE, 2019/06)
      Seabed characteristics (geoacoustic properties and scattering strength) are critical parameters for sonar performance predictions. However, this bottom information is considered very difficult and expensive to achieve in ...
    • The ocean noise coherence matrix and its rank 

      Harrison, Chris H. (CMRE, 2019/05)
      An expression for the cross-spectral density matrix of ocean noise naturally separates into a Toeplitz part and a Hankel part [Harrison (2017). J. Acoust. Soc. Am. 141, 2812?2820]. The Toeplitz part is shown to be substantially ...