Abstract
Abstract. Over the years, the acquisition technique of bathymetric data has evolved from a shipborne platform to airborne and presently, utilising space-borne acquisition. The extensive development of remote sensing technology has brought in the new revolution to the hydrographic surveying. Satellite-Derived Bathymetry (SDB), a space-borne acquisition technique which derives bathymetric data from high-resolution multispectral satellite imagery for various purposes recently considered as a new promising technology in the hydrographic surveying industry. Inspiring by this latest developments, a comprehensive study was initiated by National Hydrographic Centre (NHC) and Universiti Teknologi Malaysia (UTM) to analyse SDB as a means for shallow water area acquisition. By adopting additional adjustment in calibration stage, a marginal improvement discovered on the outcomes from both Stumpf and Lyzenga algorithms where the RMSE values for the derived (predicted) depths were 1.432 meters and 1.728 meters respectively. This paper would deliberate in detail the findings from the study especially on the accuracy level and practicality of SDB over the tropical environmental setting in Malaysia.
Highlights
The growing demands of bathymetric data for various marine applications have increased dramatically in the past few decades
Since this subject has generated intense debate among academics and industry players globally, the National Hydrographic Center (NHC) and Universiti Teknologi Malaysia (UTM) jointly took the initiative to carry out an indepth study of Satellite-Derived Bathymetry (SDB)
This paper deliberates the SDB technology detail outcomes from the wide-ranging analysis of the Pleiades multispectral satellite image data for Tawau area which acquired on the 12th July 2016
Summary
The growing demands of bathymetric data for various marine applications have increased dramatically in the past few decades. Traditional unattractive satellite images can transform into a beneficial and reliable seabed information just by embracing some unique mathematical algorithm upon the combination of spectrum bands This contemporary technique is known as Satellite-Derived Bathymetry (SDB). Considering the limitation of shipborne acquisition, remotely sensed data technique via the airborne acquisition has been accepted as an alternative method of the bathymetric data acquisition especially for the shallow water area. With more new satellites being launch and new sensors developed every year, a significant number of research works have been conducted to assess and analyse the SDB acquisition techniques (Bramante et al, 2013) This contemporary remote sensing technology considered as a promising technology and an attractive option for seafloor mapping, especially in the shallow water environment
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