Seabed tunnel remote sensing detection and positioning method under constraint of background heat radiation

Abstract

The invention discloses a seabed tunnel remote sensing detection and positioning method under the constraint of background heat radiation, and belongs to the field of intersection of marine science, thermophysics, remote sensing and pattern recognition. The seabed tunnel remote sensing detection and positioning method comprises the steps of obtaining a region of interest according to the geographic position information of an original image, filtering the image background in the region of interest based on the background thermal radiation constraint to obtain an image to be detected; dividing the image to be detected into a plurality of strip-shaped regions, and calculating the gray-scale mean value of all the strip-shaped regions, wherein the long strip-shaped region with the largest gray-scale mean value is the seabed tunnel in the image to be detected. According to the method, the relative low-frequency background is filtered through the background thermal radiation constraint condition, and the frequency band where the target is located is highlighted, so that the detection and positioning of a seabed tunnel are realized.

Description

technical field [0001] The invention belongs to the cross field of marine science, thermophysics, remote sensing and pattern recognition, and more specifically relates to a method for remote sensing detection and positioning of submarine tunnels under the constraints of background thermal radiation. Background technique [0002] There are a large number of underwater targets in the marine environment, such as submarine tunnels, submarines in the ocean, sunken ships, etc. These targets have great economic and military value, so how to accurately detect and locate the position of underwater targets is of great significance. Traditional acoustic detection requires a large-scale detection array, which is costly and cannot meet the detection and early warning needs of my country's vast sea areas. With the service of low-noise advanced submarines in recent years, it has become difficult for acoustic detection methods to detect submarines hidden in the background noise of the ocean...

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a method for remote sensing detection and positioning of subsea tunnels under the constraints of background heat radiation, thereby solving the technical problem that existing technologies cannot accurately locate in subsea tunnels

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