Autonomous underwater topographic surveying without tidal observation in network RTK mode and its engineering application

Le résumé fourni par la source

This article presents a high-precision autonomous underwater terrain measurement technology without tidal observation, which is implemented using an unmanned ship as a measurement platform and a network RTK. The composition of the autonomous detection system based on the unmanned ship measurement platform is described in detail, and the technical advantages, basic principles, and field workflow of autonomous underwater terrain measurement without tidal observation by unmanned ships are explained. Through practical engineering application case analysis, it is found that the autonomous underwater terrain measurement technology without tidal observation in the network RTK mode significantly improves the quality, efficiency, and safety of operations compared to traditional depth measurement methods. This article analyzes the application results of autonomous underwater terrain measurement technology without tidal observation, compares the effects before and after tidal level correction, and uses cross line verification to analyze and evaluate the measurement accuracy. Through data processing verification, the high-precision GNSS solution data of network RTK has shown good tidal level correction effect. The discrete range of error at the intersection of depth measurement strips is mainly concentrated between -0.7% and 1%. The proportion of water depth points with an error less than 0.5% in the measurement results is as high as 98.3%, achieving high water depth measurement accuracy and good engineering application effect.

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