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Simple hydroacoustic positioning method

An underwater acoustic positioning and simple technology, applied in the re-radiation of sound waves, the use of re-radiation, measurement devices, etc., can solve the problem that the acoustic releaser of the observation instrument and the floating ball cannot float, the anchorage sinking block cannot be released, and the ocean observation equipment cannot be Recycling and other issues, to achieve the effect of simple implementation and simple positioning system

Active Publication Date: 2017-09-26
THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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Problems solved by technology

If due to various unknown reasons, the acoustic release device cannot be released or the deck unit shows that it has been released normally, but the anchor sinker cannot be released, resulting in the inability of the observation instrument, Kevlar rope, acoustic release device and float to float up, causing several Days to years of ocean observation data and expensive ocean observation equipment cannot be recovered

Method used

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  • Simple hydroacoustic positioning method

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and embodiment the offshore work of the present invention and positioning result are described further:

[0025] see figure 1 , the simple and easy hydroacoustic positioning method of the present invention, its steps are:

[0026] Step 1: At point A, which is twice the farthest distance from the submersible buoy system, travel at a speed of 1 knot, heading due north, and start the measurement of the "test detection line", A and B in the figure. Carry out the slant range diagnosis of the submerged buoy acoustic releaser at intervals. Submerge the transmitting transducer into the sea, generally transmit the inquiry signal once every 3 minutes, and gradually obtain 20 sets of slant distance data. If the deck unit cannot receive the slant distance data due to ship radiation noise interference, the water entry depth of the transmitting transducer can be increased; if the deck unit still does not receive the slant distance data...

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Abstract

The invention discloses a simple hydroacoustic positioning method and relates to sonar positioning. In order to realize passive emergency positioning of a deep-sea submersible buoy system, the following technical scheme is provided: an acoustic release transponder as well as a deck unit, a transmitting and receiving transducer and the simple hydroacoustic positioning method matched with the acoustic release transponder is provided, wherein the deck unit has enquiry impulse transmission, return impulse receiving and slope distance measurement and display functions, and the acoustic release transponder is located about 5,000 m below the sea surface and can receive an enquiry acoustic signal and transmit response acoustic impulse. The positioning system is simple and a complex ultra-short baseline system is not required; complex solution of global positioning data of ships is not required for positioning; the method is convenient to implement.

Description

technical field [0001] The invention relates to sonar positioning, in particular to a simple underwater acoustic positioning method. Background technique [0002] Both radio waves and light waves are severely attenuated when propagating in sea water. Sound waves are the only known means of ocean navigation, positioning, detection and communication. Traditional underwater passive positioning systems generally require multiple primitives to locate the target, such as the three-subarray method and the spherical interpolation method. This method uses the arrival time or phase of the acoustic signal to measure the distance, and the precision requirements for the basic array array High, the system is complex, the ranging distance is not far, and the accuracy is difficult to compare with land positioning. [0003] In the process of building a powerful marine country, marine workers in our country often need to deploy a marine environment observation system for recovering submarin...

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Application Information

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IPC IPC(8): G01S15/06G01S7/52
CPCG01S7/52004G01S15/06
Inventor 周鸿涛杨晟许德伟
Owner THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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