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Implementation of post-processing data thinning for multibeam echo sounding data

Mahmud, Mohd. Razali and Mohd. Yusof, Othman (2006) Implementation of post-processing data thinning for multibeam echo sounding data. In: Hydrography Survey: Current Trends, Techniques and Applications. Penerbit UTM, Johor , 214 - 230. ISBN 978-983-52-0581-1

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Official URL: http://www.penerbit.utm.my/bookchapterdoc/FKSG/boo...

Abstract

One of the most significant achievements when using MBES is increasing data rates and densities. A brief noise impulse known as a "ping" is transmitted in a fan-shaped swathe in across-track survey vessel direction via MBES transducer (Figure 1). This acoustic pulse is wide in across-track direction and narrow in the perpendicular along-track direction. Within each ping, hundreds of beams are transmitted and propagated through water column in different angles measured from nadir beam. The two-way travel time for each beam’s propagation from it is transmitted, reflected by seabed, bounced back and then received by the transducer is measured and translated into sounding depth. As the ship moves, it sweeps along the sea bottom, resulting in multiple simultaneous depth measurements across the ship track. The swathe coverage is commonly assumed as four-times as wide as the water depth.

Item Type:Book Section
Subjects:Unspecified
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:25700
Deposited By: Liza Porijo
Deposited On:25 May 2012 04:07
Last Modified:03 Jun 2014 07:28

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