Deep-sea inverted echo measurement system and measurement method

Abstract

The invention discloses a deep-sea inverted echo measurement system, comprising a sensor system, an electronic system, a mooring system and a recovery system, wherein the sensor system comprises an integrated transmitting / receiving underwater acoustic transducer arranged on the top of an instrument capsule and a pressure sensor arranged in the instrument capsule; the electronic system comprises acore circuit board and a battery arranged inside the instrument capsule; the mooring system comprises a floating body, glass balls, a mooring rope, a distribution rack and an anchor sequentially arranged from top to bottom; the recovery system comprises a fuse releaser arranged between the instrument capsule and the anchor, and a GPS beacon arranged on the top of the floating body. The invention also discloses a measurement method. The measurement system and method disclosed in the invention are capable of realizing long-term stable accurate measurement of data on the seabed, and provide powerful technical support for in-depth understanding and mastering of deep-sea oceanic three-dimensional circulation structures and change rules and the influence thereof 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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