A FREQUENCY-DOMAIN APPROACH TO SHALLOW-WATER DEPTH MEASUREMENT

A new formulation for ocean-depth measurement using a frequency-domain approach is proposed. This technique uses two high-resolution eigensu bspace methods to estimate the ocean depth from backscattered noisy da ta, The problem has been addressed both for real and complex attenuati on coefficients by utilizing a double eigenstructure decomposition pro cedure on a Toeplitz as well as a Hankel matrix structure, The approac h is similar to obtaining the best rational approximation that fits th e actual measured data in a least-square sense.