Title :
Efficient waveform decomposition on airborne laser bathymetry
Author :
Cheng, W. ; Lu, W.-S. ; Antoniou, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
A technique for the efficient processing of bathymetric data is presented. First, the characteristics of bathymetric signals are analyzed in the time domain. A bathymetric signal is characterized by three components that represent the blue-green surface reflection, volume backscatter, and bottom reflection. This characterization facilitates the decomposition of the waveform and renders the depth estimation reliable and physically meaningful. Recursive computational schemes for the evaluation of the signal model are derived. The simulations have demonstrated that these schemes can be used in optimization-based depth estimation algorithms with reduced computation complexity
Keywords :
airborne radar; backscatter; bathymetry; geophysical signal processing; light reflection; light scattering; oceanographic techniques; optical radar; optimisation; parameter estimation; remote sensing by laser beam; time-domain analysis; waveform analysis; airborne laser bathymetry; blue-green surface reflection; bottom reflection; computation complexity; depth estimation; optimization-based depth estimation algorithms; recursive computational schemes; signal model; volume backscatter; waveform decomposition; Acoustic reflection; Laser modes; Laser theory; Oceanographic techniques; Optical pulses; Optical reflection; Sea surface; Surface emitting lasers; Surface waves; Water resources;
Conference_Titel :
Communications, Computers, and Signal Processing, 1995. Proceedings., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-2553-2
DOI :
10.1109/PACRIM.1995.520443
