Title :
A frequency-domain approach to shallow-water depth measurement
Author :
Pillai, S. Radhakrishnan ; Antoniou, Andreas
Author_Institution :
Adv. Dev. Group, Zetron Inc., Redmond, WA, USA
fDate :
5/1/1997 12:00:00 AM
Abstract :
A new formulation for ocean-depth measurement using a frequency-domain approach is proposed. This technique uses two high-resolution eigensubspace methods to estimate the ocean depth from backscattered noisy data. The problem has been addressed both for real and complex attenuation coefficients by utilizing a double eigenstructure decomposition procedure on a Toeplitz as well as a Hankel matrix structure. The approach is similar to obtaining the best rational approximation that fits the actual measured data in a least-square sense
Keywords :
bathymetry; geophysical techniques; oceanographic techniques; optical radar; remote sensing by laser beam; seafloor phenomena; Hankel matrix structure; Toeplitz; airborne method; backscattered noisy data; coastal bathymetry; double eigenstructure decomposition; formulation; frequency-domain approach; geophysical measurement technique; high-resolution eigensubspace method; laser remote sensing; lidar method; ocean; ocean-depth measurement; sea coast; seafloor geology; shallow-water depth measurement; Frequency measurement; Laser noise; Oceanographic techniques; Oceans; Optical pulses; Optical reflection; Particle scattering; Sea measurements; Sea surface; Surface emitting lasers;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
