Shallow sea sand wave area multi-beam sounding terrain reconstruction method based on remote sensing image features

Abstract

The invention provides a novel shallow sea sand wave area multi-beam sounding terrain reconstruction method based on remote sensing image features. Terrain reconstruction is conducted to multi-beam sounding data which are obtained in an interval type measuring line mode by that feature information (sand wave ripples and wave crests) and a sand wave terrain distribution law are utilized, wherein the feature information (sand wave ripples and wave crests) and the sand wave terrain distribution law of the shallow sea sand wave terrain are presented in a remote sensing image. Therefore, integrated sand wave terrain information is obtained. The shallow sea sand wave area multi-beam sounding terrain reconstruction method based on the remote sensing image features aims at terrain mapping requirements of wide distributed shallow sea sand wave terrain areas. Sand wave textures and sand wave crest lines in the remote sensing image are served as reference control information to lead into the multi-beam sounding data terrain reconstruction. High-accuracy shallow sea sand wave area terrain can be reconstructed through the multi-beam sounding data, wherein the multi-beam sounding data are obtained in an interval type measuring line mode. The shallow sea sand wave area multi-beam sounding terrain reconstruction method based on the remote sensing image features is an innovation of a cross application aspect of remote sensing information technology and multi-beam sounding technology. The shallow sea sand wave area multi-beam sounding terrain reconstruction method based on the remote sensing image features has great practical values.

Description

technical field [0001] The invention belongs to the field of remote sensing technology application and seabed topography surveying and mapping, and specifically relates to a multi-beam bathymetry in a shallow sea sand wave area obtained by interval surveying lines by using the characteristic information of sand waves and sand ridges in remote sensing images. methods for efficient terrain reconstruction from data. Background technique [0002] Seabed topographic mapping is the first step in exploring and studying the ocean, the first condition for developing and protecting the ocean, and an urgent need for oceanographic research today. Before the invention of the echo sounder, the water depth was mainly measured by the sounding rod and the sounding hammer, and the measurement accuracy was poor. After the echo sounder appeared in the 1920s, the drawing of sea charts in the modern sense was realized. However, the early echo sounders were launched with a single beam, and one l...

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Problems solved by technology

However, due to the discontinuity of the striped multi-beam bathymetric data, the continuous shallow sea terrain cannot be constructed only by the above spatial interpolation method

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