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Evaluating Multi Beam Echo Sounder Hydrography Accuracy with CUBE Algorithm- Case Study: Access Channel of Bushehr Port
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Negar Zahedi *   , Nader Pasandeh , Ali Kouroshnia , Seyed Mojtaba Zarei , Bahman Tajfirooz , Seyed Shahed Mosavat |
| Darya Tarsim Consulting Engineers |
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Abstract: (70 Views) |
Modern hydrographic surveying relies on Multi Beam Echo Sounder (MBES) systems and high-precision positioning methods. However, the raw data often contain erroneous points (noise and outliers) that must be cleaned before use. The CUBE algorithm (Combined Uncertainty and Bathymetry Estimator) is a fast, statistical method for gridding dense MBES data and identifying these incorrect points.
This study evaluates the accuracy of multibeam hydrographic data in the access channel of Bushehr Port using the CUBE algorithm. Field data were collected with a vessel equipped with an MBES system and processed using HYPACK software. The output of the CUBE algorithm was analyzed and compared with results obtained from conventional (manual) processing methods.
The results showed that 98.88% of the depths estimated by CUBE met the requirements of the International Hydrographic Organization’s Special-Order standards. In addition, more than 94% of the data had a Total Vertical Uncertainty (TVU) better than 10 centimeters. A comparison of the surfaces generated by the two methods showed an average difference of about 3 centimeters, indicating acceptable agreement between them.
This study confirms the effectiveness of the CUBE algorithm as a powerful, fast, and reliable tool for automated processing of multibeam hydrographic data in shallow coastal environments.
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| Keywords: Bushehr Port, multibeam bathymetry, filtering, cleaning, uncertainty, CUBE algorithm |
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Type of Study: Applicable |
Subject:
Hydrography
Received: 2025/12/2 | Accepted: 2026/04/27 | ePublished ahead of print: 2026/04/29
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