Two-dimensional signal processing techniques for airborne laser bathymetry

Author

Wong, Henry C. ; Antoniou, Andreas

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

34

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

57

Lastpage

66

Abstract

The application of two-dimensional (2D) signal processing to data collected in airborne laser bathymetry is investigated. Specifically, a type of 2D filter for the suppression of impulsive noise in irregularly-spaced data based on order-statistics filtering is developed. An algorithm which incorporates this type of filter along with a sophisticated 2D interpolation technique is constructed to automate the filtering process. An adaptive 2D filtering technique that can be applied to raw bathymetric profiles to remove wideband noise is then discussed. The results obtained show that each type of filtering enhances the accuracy of bathymetric measurement quite significantly

Keywords

adaptive signal processing; bathymetry; filters; geophysical signal processing; geophysical techniques; laser beam applications; oceanographic techniques; optical information processing; optical radar; remote sensing by laser beam; adaptive signal processing; airborne laser bathymetry; airborne lidar method; algorithm; filter; geophysical measurement technique; impulsive noise; interpolation; irregularly-spaced data; laser remote sensing; ocean; order-statistics filtering; sea coast; seafloor topography; suppression; two dimensional signal processing; wideband noise; Acoustic noise; Filtering; Filters; Geologic measurements; Laser noise; Oceanographic techniques; Oceans; Sea measurements; Signal processing; Signal processing algorithms;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.481893

Filename

481893