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Rapid cross positioning method for underwater electric field source

A technology of cross positioning and electric field, applied in the direction of using electrical devices, electromagnetic means, instruments, etc., can solve the problems of low positioning accuracy, low search efficiency, slow positioning speed, etc., and achieve high positioning accuracy, low cost, and positioning speed. quick effect

Active Publication Date: 2022-07-01
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]Through the above analysis, the problems and defects of the existing technology are: the existing technology has low search efficiency, slow positioning speed, low positioning accuracy and high cost

Method used

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  • Rapid cross positioning method for underwater electric field source
  • Rapid cross positioning method for underwater electric field source
  • Rapid cross positioning method for underwater electric field source

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Experimental program
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Effect test

Embodiment 1

[0063] The rapid cross positioning method of the underwater electric field source of the present invention comprises the following steps:

[0064] Step 1: Build an electric field measurement system with two horizontal components of electric field Ex and Ey and a carrying tool with track recording function on the water surface. The electric field measurement system is used to measure the horizontal component of the underwater electric field source, and the carrying tool is used to carry the electric field The measurement system moves on the water surface to locate underwater targets;

[0065] Step 2: Carry the electric field measurement system carrier, move along the cable direction on the water surface, or the approximate direction of the underwater electric field source, and collect the electric field in real time. If the electric field level has the maximum value shown in Figure 2, or between the maximum and minimum values The zero-crossing point of , that is, according to t...

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Abstract

The invention belongs to the technical field of position measurement, and discloses an underwater electric field source rapid cross positioning method, which comprises the following steps: carrying an electric field measuring device on a water surface by using a carrying tool to move, measuring a horizontal component of an underwater electric field source by using the electric field measuring device, and positioning an underwater target. According to the invention, the underwater electric field source can be rapidly and accurately positioned, and the underwater electric field source can be rapidly positioned under the condition of low cost; the method can be used for positioning electric field sources such as submarine cable breakpoints and underwater current leakage points. The method is high in positioning precision, the laboratory test verifies that the positioning precision can reach 0.1 m, and the marine test proves that the positioning precision can reach 1 m. The system is simple and easy to operate, and the system core is an electric field measuring device which can be carried on various navigation tools such as speed boats and USVs. According to the method, the positioning speed is high, and accurate positioning can be realized only by rapidly navigating along the direction of a cable or other electric field sources at the beginning of positioning and navigating according to an orthogonal or large-angle intersecting track after an abnormal point is found.

Description

technical field [0001] The invention belongs to the technical field of position measurement, and in particular relates to a fast cross positioning method for underwater electric field sources. Background technique [0002] At present, with the further development and utilization of marine resources, there are a large number of wind farms, tidal power farms, oil drilling platforms, etc. in the ocean, resulting in a large number of power transmission cables, connecting devices, and communication cables on the seabed. Geological activities, typhoons, and fishing boat activities often lead to the rupture of these cables on the seabed. After the submarine cable is broken, only by quickly locating the breakpoint can it be repaired in time to minimize economic losses. At present, underwater robots are mainly used for search and positioning. Due to the slow navigation speed of underwater robots, all search efficiency is low and has a relatively high cost. [0003] Through the above...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/00
CPCG01B7/003Y02A90/30
Inventor 张伽伟姜润翔
Owner NAVAL UNIV OF ENG PLA
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