Deep-sea inverted echo measurement system and measurement method

Abstract

The invention discloses a deep-sea inverse echo measurement system, which includes a sensor system, an electronic system, a mooring system and a recovery system. The sensor system includes a transmitting / receiving two-in-one underwater acoustic transducer arranged on the top of an instrument cabin. and a pressure sensor arranged in the instrument cabin, the electronic system includes a core circuit board and a battery arranged inside the instrument cabin, and the mooring system includes a floating body, a glass ball, a mooring rope, a cloth and a floating body arranged in sequence from top to bottom. Putting racks and moorings, the recovery system includes a fuse-type releaser arranged between the instrument cabin and the mooring, and a GPS beacon set on the top of the floating body. At the same time, the measurement method is also disclosed. The measurement disclosed in the present invention The system and method can measure data stably and accurately on the seabed for a long time, and provide a strong technical guarantee for in-depth understanding and mastering of the three-dimensional circulation structure of the deep-sea ocean, its variation law and its impact on climate change.

Description

technical field [0001] The invention relates to the field of underwater detection, in particular to a deep-sea inverse echo measurement system and a measurement method. Background technique [0002] The 21st century is the century of the ocean. To understand the ocean, develop and utilize the ocean, it is necessary to carry out ocean surveys. High-tech marine equipment is an important guarantee for marine surveys. In order to discover new ocean phenomena, verify new ocean theories, and meet the needs of marine science development, in addition to relying on buoys and submersible buoys to obtain long-term marine scientific data in the research sea area, bottom-mounted observation equipment is essential to obtain long-term on-site observation data. [0003] When the acoustic waves generated on the seabed radiate to the sea surface and are reflected back to the seabed, the vertical acoustic travel time (Vertical Acoustic Travel Time, hereinafter referred to as VATT) is an impor...

AI Technical Summary

Problems solved by technology

[0005] At present, the traditional inverse echo measurement system has a simple structure and is easily affected by the seabed environment when working in deep sea. It is difficult to be completely perpendicular to the sea level when deployed.

The measurement data is not accurate enough. During measurement, false echoes caused by reverberation and false targets (such as fish, etc.) will have a great impact on the measurement results

Moreover, when working on the seabed, each module works at the same time, which has relatively high requirements on the battery, high power consumption, short service life, and the battery needs to be replaced frequently

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