Method for realizing deep sea extension tracking by using floating-sinking load device

Abstract

The invention relates to the technical field of underwater acoustic equipment design and manufacturing, and concretely relates to a method for realizing deep sea extension tracking by using a floating and sinking load device. The method comprises the following steps: S1, constructing a movable underwater detection node; S2, after the target is detected, adjusting a hydrophone array to be a vertical array, and the target is aligned through a narrow beam; and S3, after the target moves out of the observation area, adjusting the hydrophone array in the horizontal direction so as to increase the horizontal space gain and realize continuous tracking of the target. The depth and the direction of the hydrophone array are continuously adjusted according to the distance between the environmental noise and the target so as to realize continuous extension tracking of the target in the convergence area; and the method has the advantages of concealment and maneuverability, and makes breakthrough progress in detection performance by utilizing deep sea acoustic characteristics. The method is of great significance in expanding the underwater target information sensing range in the future, implementing full coverage on sensitive or disputed areas and establishing an underwater detection, communication, conduction and measurement integrated seabed observation network in China.

Description

technical field [0001] The invention relates to the technical field of design and manufacture of underwater acoustic equipment, in particular to a method for realizing deep-sea extended tracking by using a floating load device. Background technique [0002] Deep-sea sound channels exist widely in deep seas around the world, and have received great attention because of their very good sound propagation performance. The range from the sea surface to the conjugate depth is called the width of the deep-sea sound channel. According to Snell’s law of refraction, the sound ray always bends to the direction of the minimum value of the sound velocity. When the sound source is located at a certain depth in the deep-sea sound channel, the small sweep The sound rays of the angle of incidence will be limited to propagate in the deep-sea sound channel, and will not collide with the sea surface of the seabed, and the propagation loss is less, so the sound signal can travel a long distance....

AI Technical Summary

Problems solved by technology

[0003] Most sonars in our country adopt the direct wave detection mode, which has strong applicability, but has a short range and is affected by the environment, especially in the deep sea environment, where the sound ray is bent and the sound field is very complex, and sonar signal processing is affected by multi-path propagation and physical environmental impact

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