Bathymetric study at Malacca river (Taman Rumpun Bahagia) using compressed high-intensity radiated pulse device

Ahmad Hesamuddin, Ahmad Farouq (2023) Bathymetric study at Malacca river (Taman Rumpun Bahagia) using compressed high-intensity radiated pulse device. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Bathymetry is a technique used to conduct hydrographic survey or measurement of the depth of water in oceans, rivers, or lakes. Generally, classic bathymetric surveys use a single rope and a single point check and unlike other methods such as employing Light Detection and Ranging (LiDAR) or sonar, it has a drawback which is the capability to only verify a single spot at a time. The aim of this study was to investigate the use of sonar to determine the characteristics of the riverbed of the Malacca River. To obtain the desired data and results, a sonar device model which uses Compressed High-Intensity Radiated Pulse (CHIRP) technology is attached to a boat to properly map the riverbed characteristics and terrain of the river by moving around the river in a specific pattern to achieve the best results. An application is used to monitor the readings of the CHIRP+ sonar using built-in Wi-Fi connection installed within the device. This allows updated reading during the scanning process of the river. The results show the data of the underwater map that shows various characteristics in terms of depth, terrain, erosion, and sediment of the river. The data shown is significant as they can be used to study the river shallowness, potential flooding, aquatic systems, or any further research of the river in the future.

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