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Deepwater multi-beam sounding method and system based on all-attitude stabilization strategy

A full-attitude, multi-beam technology, applied in the field of marine acoustic equipment, can solve problems affecting beam pointing and sounding result errors, and achieve the effect of reducing the impact and improving the sounding accuracy

Active Publication Date: 2021-07-13
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the deep-water multi-beam bathymetry system usually takes a few seconds to ten seconds to transmit and receive, the attitude of the carrier will change continuously during this period, which will affect the direction of the beam, resulting in errors in the bathymetry results.

Method used

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  • Deepwater multi-beam sounding method and system based on all-attitude stabilization strategy
  • Deepwater multi-beam sounding method and system based on all-attitude stabilization strategy
  • Deepwater multi-beam sounding method and system based on all-attitude stabilization strategy

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Embodiment 1

[0077] Embodiment 1 of the present invention provides a deep water multi-beam derived method based on a full-gesture stabilization strategy. Features:

[0078] 1. Two-dimensional planar emitted array composed of nearly a thousand substrates, each of which is driven by a separate transmitter to achieve two free degrees rotation of the emission beam;

[0079] 2. Implementing the transmission beam of the transmit beam and stability in a manner of distributing different signals with multiple beams;

[0080] 3. The transmitting end uses a method of turbulence, longitudinal, and hosted full-gesture;

[0081] 4. The receiving end is a method of receiving beamforming based on receiving full-gesture stabilizing or receiving roll stability strategies;

[0082] 5. The receiving end uses a depth point solution method based on full-gesture stable transmitting and receiving position, no co-point model or transmitting and receiving position coordinate model.

[0083] In the three postures of sha...

Embodiment 2

[0123] Embodiment 2 of the present invention proposes a deep water multi-beam conditioning system based on full-gesture stabilization. The system includes a transmitting signal processing unit, a transmitting unit, a receiving unit, a reception signal processing unit, and an underwater resonance array mounted on the bottom of the veneer, the water, including a two-dimensional plane emitter. One-dimensional flat reception array; where

[0124] The transmitted signal processing unit is configured to calculate the delay of each emission base of the transmitted array relative to the reference point according to the real-time shaking, longitudinal tilt, and hosing posture data.

[0125] The transmitting unit is configured to distribute different transmitted signals to different angles perpendicular to the navigation direction depending on the delay of the respective emission bases of the transmitted array.

[0126] The receiving unit is configured to receive a directional transmit beam...

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Abstract

The invention discloses a deepwater multi-beam sounding method and system based on an all-attitude stabilization strategy, and the method is realized based on an underwater sonar array installed at the bottom of a ship, the underwater sonar array is a T-shaped array, and comprises a two-dimensional plane transmitting array and a one-dimensional plane receiving array. The method comprises the following steps: according to real-time yawing, trim and rolling attitude data, calculating the time delay of each transmitting element of a transmitting array relative to a reference point when the transmitting full attitude is stable; according to the time delay, distributing different transmitting signals to different angles perpendicular to the sailing direction in a plurality of sectors; a receiving array receiving a directional emission wave beam; and according to the real-time yawing, trim and rolling attitude data and the positions of the two-dimensional plane transmitting array and the one-dimensional plane receiving array, processing the received directional transmitting beam based on a receiving all-attitude stabilization strategy to obtain a sounding result. The method can effectively reduce the influence of the attitude change of the array carrier on the received beam, improves the sounding precision of the system, and is one of the core technologies of a domestic deepwater multi-beam sounding system.

Description

Technical field [0001] The present invention relates to the technical field of marine acoustic equipment, and in particular, a deep water multi-beam derived method and system based on a full-gesture stability strategy. Background technique [0002] Water depth detection is the most basic work of marine research, marine survey, marine surveying and ocean engineering. The maximum detection water depth system of the vessel deep water multi-beam-derived system based on multi-wavelength bundle deeper technology is 11,000 meters, which is currently highly efficient and accurate water depth detection equipment. Deep water multi-beam conditioning system typically uses T-shaped water to serve in the t-shaped water, wherein the transmitted array is placed in the direction of the boat dragon bone, and the receiving array is placed perpendicular to the keel direction, both are fixed to the bottom of the ship. When the system is working, the beamforming technique is formed to form a narrow an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/87
CPCG01S15/872Y02A90/30
Inventor 刘晓东王舒文曹金亮樊曌吴明明赵海肖
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI