Underwater target detecting instrument through active and passive combination, and underwater target detecting system and method through active and passive combination

Abstract

The invention belongs to the technical field of underwater target detection and monitoring, and relates to an underwater target detecting instrument through active and passive combination, and an underwater target detecting system and method through active and passive combination. The instrument comprises a marine electric field measuring instrument, a marine magnetic field measuring instrument, afour-component underwater acoustic sensing unit, a data collection and storage unit and an underwater wireless data transmission unit; the data collection and storage unit is configured to collect measurement data of the marine electric field measuring instrument, the marine magnetic field measuring instrument and the four-component underwater acoustic sensing unit and convert the data to digitalsignals for storage; the underwater wireless data transmission unit transmits the data in the data collection and storage unit to the water surface in a wireless transmission mode. The underwater target detecting instrument and the underwater target detecting system and method can detect or monitor a target moving underwater or hovering in the water or being silent at seabed and entering the detection range in real time so as to solve the problems that the current single underwater target detection systems and methods such as underwater sound, ultrasonic, laser, seabed earth electromagnetismcannot accurately and reliably detect or monitor the underwater movement or the static target.

Description

technical field [0001] The invention belongs to the technical field of underwater target detection and monitoring, and relates to an active and passive underwater target detection instrument, a monitoring system and a method. Background technique [0002] The detection and real-time monitoring of underwater or seabed moving or stationary targets usually use ultrasonic and laser (active), underwater acoustics and submarine magnetotelluric (passive) detection technologies. Due to the limitations of various methods and the strong background noise of various physical fields in the ocean, it is often difficult for them to reliably and accurately detect or monitor in real time the underwater movement or hovering in the water that enters its detection range. Or for targets that are silent on the seabed, it is necessary to invent newer, better and more reliable technical methods and practical equipment to solve the problem that current single underwater target detection systems and ...

AI Technical Summary

Problems solved by technology

Due to the limitations of various methods and the strong background noise of various physical fields in the ocean, it is often difficult for them to reliably and accurately detect or monitor in real time the underwater movement or hovering in the water that enters its detection range. Or for targets that are silent on the seabed, it is necessary to invent newer, better and more reliable technical methods and practical equipment to solve the problem that current single underwater target detection systems and methods such as ultrasound, laser, underwater acoustics, and magnetotellurics cannot accurately and reliably detect or monitor underwater targets. Difficulties with moving or static targets

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