Abstract
In a recent paper [Pinson et al., J. Acoust. Soc. Am. 143, 2622–2631], theoretical interface echo scintillation, time-of-arrival variance, and angle-of-arrival variance have been derived as a function of the roughness autocorrelation function. Those parameters have been obtained under the Kirchhoff and small-roughness approximation by including integration over the source and receiver arrays in the Helmholtz-Kirchhoff integral. In this communication, we present the first roughness inversion results of at-sea recorded data based on the seabed-specular-echo fluctuation analysis. The data were recorded with the multibeam-subbottom-profiler SBP120 during the CALIMERO 2004 experiment campaign in the Gulf of Lion. [Research supported by the ONR Ocean Acoustics Program.]
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