Water bottom position detection method and device

Abstract

The embodiment of the invention provides a water bottom position detection method and device, and the method comprises the steps: generating a water bottom salient image of a target water area based on a water bottom sonar image through a visual attention mechanism after obtaining the water bottom sonar image of the target water area; and determining real water bottom position information of the target water area based on the water bottom salient image by using a preset water bottom detection method. A visual attention mechanism is utilized to perform salient feature extraction on the water bottom sonar image to obtain the water bottom salient image, and the water bottom salient image can represent salient contrast features between the water bottom and a non-water body object in the water area, so that preliminary area delineation can be performed on the position of the water bottom based on the water bottom salient image, the pre-estimated position information of the water bottom is determined, and then the position of the water bottom is accurately positioned based on the pre-estimated position information by using a preset water bottom detection method, and thus the positioning accuracy of the multi-beam probing sonar system on the real water bottom position of the target water area is improved.

Description

technical field [0001] This document relates to the technical field of water area measurement, in particular to a detection method and device for underwater position. Background technique [0002] At present, with the rapid development of water bottom detection technology, in order to understand the current environmental conditions of the target water area, it is necessary to accurately locate the real position of the bottom of the water. Among them, the multi-beam detection device is mainly used in combination with phase detection or amplitude detection. However, since there are often a large number of non-water objects such as fish schools in the water area to be measured, and the tunnel effect caused by side lobes, this will inevitably have certain clutter interference on signal acquisition. , may cause non-water objects to be misidentified as the bottom; especially, when the measurement depth becomes larger, the signal-to-noise ratio of the edge beam decreases, and the s...

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a detection method and device for the underwater position to solve the problem of non-water objects (such as fish schools) in the complex underwater environment when the water environment in the water area to be measured is relatively complicated. Clutter interference leads to the problem of low detection accuracy of the real bottom position

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