Method for simulating and optimizing echo signal intensity of moving surface ship

A technology of echo signal and optimization method, which is applied in design optimization/simulation, 3D modeling, image data processing, etc. It can solve the problem of wave time-varying and sea surface scattering without consideration of surface ships, and the coupling between moving surface ships and motion Multiple scattering problems, simulation speed and accuracy cannot be reached, etc.

Pending Publication Date: 2021-11-26
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

At present, the simulation methods for the echo signal strength of moving surface ships are all in the static state of the free field, without considering the time-varying motion attitude of the surface ship with waves and sea surface scattering, and without considering the multiple scattering of the moving surface ship coupled with motion problems, and the simulation speed and accuracy cannot meet the requirements of realistic simulation

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  • Method for simulating and optimizing echo signal intensity of moving surface ship
  • Method for simulating and optimizing echo signal intensity of moving surface ship
  • Method for simulating and optimizing echo signal intensity of moving surface ship

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific implementation cases described here are only used to explain the present invention, not to limit the present invention.

[0030] like figure 1 As shown, a method for simulating and optimizing the echo signal strength of a moving surface ship of the present invention comprises the following steps:

[0031] S1: According to the model line diagram of the moving surface ship model ignoring the propeller and stern shaft, use the 3D modeling software UG (Unigraphics) to establish a 3D hull geometric model below the water surface. The length of the ship is 3.7m, the width is 0.46m, and the draft is 0.16. m;

[0032] S2: The 3D hull model will be established, and the underwater part of the 3D hull model...

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Abstract

The invention discloses a method for simulating and optimizing the echo signal intensity of a moving surface ship, which comprises the following steps of: establishing a three-dimensional ship body model below the water surface according to a ship model line graph, subdividing a triangular surface grid, solving a moving posture of the three-dimensional ship body model and a two-dimensional rough sea surface complex reflection coefficient in combination with different sea condition parameters, and according to the established four-path echo model of the water surface ship and four-path echo signals of the moving water surface ship, superposing the echo signal intensity of each path, and simulating the echo signal intensity of the moving water surface ship. The method disclosed by the invention has a remarkable advantage in calculation speed, and the average error between the theoretical simulation result and the actual measurement result of the echo signal intensity is less than 2dB, so that the echo signal intensity of the moving surface ship can be accurately and quickly simulated.

Description

technical field [0001] The invention belongs to the technical field of target sound scattering in water. The invention relates to a method for simulating and optimizing the echo signal strength of a moving surface ship. Background technique [0002] In recent years, in view of the significance of compound scattering research of moving and complex targets in target stealth technology, ocean remote sensing and radar detection, the research on related issues has attracted extensive attention of scholars at home and abroad. At present, the simulation methods for the echo signal strength of moving surface ships are all in the static state of the free field, without considering the time-varying motion attitude of the surface ship with waves and sea surface scattering, and without considering the multiple scattering of the moving surface ship coupled with motion problems, and the simulation speed and accuracy cannot meet the requirements of realistic simulation. Contents of the ...

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Application Information

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IPC IPC(8): G06F30/23G06F30/15G06T17/20G06F111/08
CPCG06F30/23G06F30/15G06T17/20G06F2111/08
Inventor 彭子龙柴鹏程昝浩程一鹏柯慧程陈添宝
Owner JIANGSU UNIV OF SCI & TECH
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