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Marine acoustic phase center calibration method

A technology of phase center and calibration method, applied in positioning, fluid dynamics test, measuring device, etc., can solve the problems of low efficiency and long time-consuming experiment, and achieve the goal of improving experimental efficiency, shortening experimental time-consuming, and high-efficiency calibration process Effect

Active Publication Date: 2021-07-23
HARBIN ENG UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing acoustic phase center calibration method needs to perform pool experiments to calibrate the acoustic phase center of the acoustic array in advance, and there are defects such as long time-consuming experiments and low efficiency. The present invention provides a maritime acoustic phase center calibration method

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  • Marine acoustic phase center calibration method
  • Marine acoustic phase center calibration method

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0042] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0043] see figure 1 and figure 2 Describe this embodiment, a kind of marine acoustic phase center calibration method described in this embodiment, the method includes the following steps:

[0044] S1. Make the operation ship loaded with satellite navigation system and acoustic measurement syst...

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Abstract

The invention discloses a marine acoustic phase center calibration method, and relates to the field of marine surveying and mapping. The problems that according to an existing acoustic phase center calibration method, a pool experiment needs to be carried out in advance to calibrate the acoustic phase center of an acoustic array, the experiment time consumption is long, and the efficiency is low are solved. The method comprises the following steps: S1, enabling a workboat to sail around a seabed beacon according to a preset track, and collecting data; S2, calculating the installation position deviation DX of a seabed beacon coordinate matrix and an acoustic array in a geodetic coordinate system by using the data collected in S1; S3, calculating coordinates of each element on an acoustic array in the workboat coordinate system according to the sum DX; and S4, calculating the length of each base line according to the coordinate of each element on the acoustic array in the workboat coordinate system, and calibrating the acoustic phase center of each element through each base line length. The method is mainly used for calibrating the element acoustic phase center.

Description

technical field [0001] The invention relates to the field of marine surveying and mapping. Background technique [0002] Acoustic positioning is an indispensable technology in marine geodesy, and acoustic phase center calibration technology is the basis of acoustic high-precision positioning. The existing method for calibrating the acoustic phase center is realized by measuring the straight-line distance between the acoustic phase centers of each primitive through the water tank experiment. However, in the process of specific application, the offshore calibration experiment of the installation deviation of the acoustic array requires a pool experiment to calibrate the acoustic phase center of the acoustic array in advance, which has the disadvantages of long experiment time and low efficiency. A method for calibrating the acoustic phase center at sea, so the above problems need to be solved urgently. Contents of the invention [0003] The purpose of the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/18G01S5/22G01M10/00
CPCG01M10/00G01S5/18G01S5/183G01S5/22
Inventor 郑翠娥孙大军韩云峰张居成崔宏宇张殿伦
Owner HARBIN ENG UNIV
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