Underwater target detection method and system based on gravity information

Abstract

The invention discloses an underwater target detection method based on gravity information, and the method comprises the following steps: firstly deploying a detector to a detection water area to sit on the bottom, and continuously monitoring the gravity change in the water area through an atom interference gravimeter carried by the detector; then, when gravity distortion caused by the mass of the underwater target exceeds the sensitivity range of gravity measurement of the atom interference gravimeter, enabling the detector to detect that the underwater target enters the monitored water area; and establishing a mathematical model of the underwater target, wherein the displacement of the underwater target can be speculated according to the vertical gravity generated by the underwater target. According to the invention, a high-precision miniaturized atom interference gravity measurement device carried by the detector is utilized to measure the gravity distortion in the area caused after the underwater target enters the detection area, and new concept underwater target detection based on gravity distortion information is achieved.

Description

technical field [0001] The invention relates to the technical field of object detection, in particular to an underwater target detection method and system based on gravity information. Background technique [0002] At present, underwater target detection technology is mainly based on acoustic detection and magnetic detection. The magnetic field features are continuously reduced, even submerged in the background noise of the ocean, and the detection ability of traditional methods is greatly weakened. Non-acoustic and non-magnetic detection technologies such as laser detection, synthetic aperture radar and infrared thermal imaging are also developing rapidly, but they all have certain defects. Laser detection uses light waves to image targets in water, and can obtain images with high resolution. According to the images, the target type can be distinguished. However, light waves are severely attenuated in seawater and have high requirements for water quality. Synthetic apertu...

AI Technical Summary

Problems solved by technology

Infrared thermal imaging detects underwater targets or their thermal wakes. Since the intensity of infrared radiation is closely related to the surface temperature, the detection performance is not good.

[0003] It can be seen that the current underwater target detection technology is either affected by the ocean environment, and the detection effect is not good, or its detection capability is weakened by the development of countermeasure technology. Therefore, it is imperative to study new detection methods and develop new detection technologies.

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