Title :
Noise filtering and enhancement of seabed topography for 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 noise filtering and enhancement of seabed topography of coastal waters is presented. The characteristics of the noise with which the bathymetric signals are contaminated are studied. A simple, yet efficient, data segmentation and interpolation method for regularizing irregularly spaced data is developed. Then a 2D noise filtering algorithm based on the use of local statistics of depth measurements is described and applied to the data
Keywords :
airborne radar; bathymetry; geophysical signal processing; interference suppression; interpolation; oceanographic techniques; optical radar; radar signal processing; remote sensing by laser beam; statistical analysis; two-dimensional digital filters; 2D noise filtering algorithm; airborne laser bathymetry; bathymetric signals; coastal waters; data segmentation; depth measurements; enhancement; interpolation method; irregularly spaced data; local statistics; noise filtering; seabed topography; Acoustic noise; Background noise; Filtering; Interpolation; Laser noise; Oceanographic techniques; Pollution measurement; Sea measurements; Signal processing algorithms; Surfaces;
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.1995.520444
