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The Needs of Offset and Attitude Corrections in a Single Beam Hydrographic Survey

Salleh, Che Senu (2006) The Needs of Offset and Attitude Corrections in a Single Beam Hydrographic Survey. In: Hydrography Survey: Current Trends, Techniques and Applications. Penerbit UTM, Johor , 103 - 113. ISBN 978-983-52-0581-1

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Abstract

In the past, it was assumed that the accuracy of positions and depths of single beam echosounder were equivalent to the precision of the equipment used by assumption that the beam width of single beam echosounder was typically wide enough to absorb the positioning error caused by roll and pitch, the positioning system was located on top of transducer and because of the cost of a gyrocompass, launches seldom logged heading information. Since positioning and depth determination technology become increasingly more accurate, the study of survey boat’s offset and attitude become critical to ensure accurate position and depth. Since the mid 1990’s, affordable and accurate motion sensor and gyro compass instruments have significantly reduced these errors (USACE 2002). The goal of this paper is to determine and reduce the offset, heading, and attitude (i.e. roll, pitch and heave) effects in a single beam hydrographic data.

Item Type:Book Section
Subjects:Unspecified
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:25745
Deposited By: Liza Porijo
Deposited On:05 Jun 2012 04:20
Last Modified:04 Jun 2014 08:52

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