Advanced digital processing of echo sounder signals for characterization of very dense submersed aquatic vegetation / Bruce M. Sabol, Janusz Burczynski, and Joel Hoffman.

By: Sabol, B. M. (Bruce M.).
Contributor(s): Burszynski, J | Hoffman, J | Aquatic Plant Control Research Program (U.S. Army Engineer Waterways Experiment Station).
Material type: materialTypeLabelBookSeries: Environmental Laboratory technical report: 02-30Publisher: Vicksburg, MS : U.S. Army Engineer Research and Development Center, 2002Description: 18 pages : illustrations ; 30 cm.Report number: ERDC/EL TR-02-30Subject(s): AQUATIC PLANTS | VEGETATION | DIGITAL SIGNAL PROCESSING | ECHOSOUNDERS | ECHOSOUNDING | METHODS | USAHoldings: GRETA POINT: 632.51(204) SAB Online resources: Click here to access online
Contents:
Preface -- 1. Introduction -- 2. Methods -- Site Description -- Analyses -- 3. Results -- 4. Discussion.
Summary: An algorithm has been developed and previously described for detecting and characterizing submersed aquatic vegetation using the digital signal of a vertically oriented, single-beam, single-frequency echo sounder. It has performed well under most conditions for characterization of submersed vegetation in shallow fresh and estuarine waters. Several types of conditions have proven to be problematic. These include detection of extreme low-density vegetation (<60g (wet)/m2), accurate detection of vegetation in areas of rocky substrate, and correct bottom tracking and vegetation characterization under extremely dense canopy conditions. Using a multitemporal dataset, we examine current processing problems for a dense canopy condition and develop alternative processing approaches to improve system performance. A strategy for a configurable logic signal processor software system is described which would enable specialized processing to be performed without the need to rewrite digital signal processing code.
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Holdings
Item type Current library Call number Copy number Status Date due Barcode
BOOK BOOK WELLINGTON BOOKS 632.51(204) SAB 1 Available B021391

"September 2002."

At head of title: Aquatic Plant Control Research Program.

Available on the internet.

This paper was originally presented at the Symposium for Acoustics in Fisheries and Aquatic Ecology, Montpellier, France, June 10-14, 2002.

Includes bibliographical references.

Preface -- 1. Introduction -- 2. Methods -- Site Description -- Analyses -- 3. Results -- 4. Discussion.

An algorithm has been developed and previously described for detecting and characterizing submersed aquatic vegetation using the digital signal of a vertically oriented, single-beam, single-frequency echo sounder. It has performed well under most conditions for characterization of submersed vegetation in shallow fresh and estuarine waters. Several types of conditions have proven to be problematic. These include detection of extreme low-density vegetation (<60g (wet)/m2), accurate detection of vegetation in areas of rocky substrate, and correct bottom tracking and vegetation characterization under extremely dense canopy conditions. Using a multitemporal dataset, we examine current processing problems for a dense canopy condition and develop alternative processing approaches to improve system performance. A strategy for a configurable logic signal processor software system is described which would enable specialized processing to be performed without the need to rewrite digital signal processing code.

GRETA POINT: 632.51(204) SAB

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