Anti-dragging device of side-scanning sonar instrument

Abstract

The invention belongs to the technical field of measuring equipment, and discloses an anti-dragging device of a side-scanning sonar instrument. The anti-dragging device is provided with a bottom protection bracket, a front-end anti-dragging protection bracket welded and mounted at the front end of the bottom protection bracket, front-end fixing rods symmetrically welded and mounted in the middle of the front end anti-dragging protection bracket, and rear-end fixing rods symmetrically welded at the rear end of the bottom protection bracket. A towfish of the side-scanning sonar instrument is fixed at the upper end of the bottom protection bracket, the lower side and the front side of the towfish can be protected through the bottom protection bracket and the front-end anti-dragging protectionbracket, damage of a sea surface culture raft frame and ropes to the towfish of the side-scanning sonar instrument during work of present equipment in a raft type culture area is overcome, it is guaranteed that the equipment smoothly passes the culture sea area, and the working efficiency of ocean sounding is improved.

Description

technical field [0001] The invention belongs to the technical field of measuring equipment, in particular to an anti-drag device of a side-scan sonar. Background technique [0002] At present, the closest existing technology in the industry: side-scan sonar is a device that uses the principle of echo sounding to detect seabed landforms and underwater objects, also known as side sonar or seabed geomorphology instrument. Its transducer array is installed in the hull or in the towing body, and emits fan-shaped beam sound pulses to both sides and downwards when navigating. The backscattered signal of , was amplified, processed and recorded, showing an image of the intensity of the seafloor reflection on the recording strip. Side-scan sonar can be used to detect seabed landforms, identify types of seabed sediments, and determine the distribution range of various types of sediments and exposed bedrock on the seabed; it can detect the length and position of seabed obstacles; and i...

AI Technical Summary

Problems solved by technology

[0007] 1) When the side scan sonar is working, the main body of the towfish is generally kept 1.0m-2.0m below the sea surface, so when there are obstacles on the sea surface, it is very easy to cause the probe to scratch

2) There are various types of obstacles on the sea, including fixed raft farming frames, floating balls, etc., as well as drift nets and ropes that follow the current movement. These obstacles that are higher than the position of the towed fish, if combined with the side-scan sonar If the towfish is scratched or entangled, the ship cannot stop in time, which will cause cable breakage, instrument damage or even instrument loss

3) The maneuverability of the ship is very slow, and the weather conditions at sea are more complex and changeable than those on land. Wind, waves, currents, fog, etc. will affect the navigation of the ship. The flexibility of the ship to avoid obstacles is greatly reduced, and complex sea conditions are also difficult. It will cause fluctuations and displacements of obstacles on the sea, and sometimes waves will push obstacles under the sea surface, making it difficult for ships to find them when they are sailing, which will have a great impact on ocean detection

4) The detection of seabed landforms must ensure that the attitude of the instrument is stable so that the data can be reliable. Therefore, the anti-drag equipment must be light and stable, and the instability of the equipment must not be increased.

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