Browsing Reprints by Author "Pouliquen, Eric"

Now showing items 1-3 of 3

    • Analysis of broad-band echosounder data over a gassy seabed 

      Boyle, Frank A.; Chotiros, Nicholas P.; Pace, Nicholas G.; Bergem, Oddbjorn; Pouliquen, Eric (NATO. SACLANTCEN, 1997)
      Calibrated echosoundings from a well-characterized gassy seabed were examined. Acoustic reflection was significantly higher than expected. It is hypothesized that gas bubbles are responsible. Anomalously high levels of ...

    • Seabed characterization by inversion of parametric sonar data: selection of the cost function 

      Caiti, Andrea; Bergem, Oddbjorn; Pouliquen, Eric; Biancheri, A.; Scaricacciotoli, S. (NATO. SACLANTCEN, 1997)
      A class of possible cost functions to be used in model-based estimation of bottom parameters from highfrequency backscatter signals is introduced. The cost is based on the properttes of the signal in the wavelettransformed ...

    • The effect source movements on shallow water bottom backscatter 

      Bergem, Oddbjorn; Pouliquen, Eric; Pace, Nicholas G. (NATO. SACLANTCEN, 1997)
      The time-evolution model BORIS is used to study the effects of source movements on bottom backscatter. Changes in the backscattend time domain signals as functions of source depth, position and incident angles are simulated ...