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A method for calibrating the phase center of marine acoustics

A technology of phase center and calibration method, which is used in positioning, fluid dynamics test, and testing of machine/structural components, etc., can solve the problems of low efficiency and long experiment time, so as to improve the experiment efficiency, shorten the experiment time, overcome the The effect of systematic error

Active Publication Date: 2021-10-29
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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  • A method for calibrating the phase center of marine acoustics
  • A method for calibrating the phase center of marine acoustics
  • A method for calibrating the phase center of marine acoustics

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[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

A method for calibrating a marine acoustic phase center relates to the field of marine surveying and mapping. It solves the problem that the existing acoustic phase center calibration method needs to perform water pool experiments to calibrate the acoustic phase center of the acoustic array in advance, and has the defects of long time-consuming experiments and low efficiency. The method of the present invention comprises the following steps: S1, making the operation ship sail around the seabed beacon according to the preset track, and collecting data, S2, using the data collected by S1 to calculate the coordinate matrix of the seabed beacon in the geodetic coordinate system and the installation of the acoustic matrix Position deviation D X ; S3, according to and D X , calculate the coordinates of each primitive on the acoustic matrix in the workboat coordinate system; S4, calculate the length of each baseline according to the coordinates of each primitive on the acoustic matrix in the workboat coordinate system, and calibrate the length of each primitive through the length of each baseline Acoustic phase center. The invention is mainly used for calibrating the acoustic phase center of the primitive.

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 Patents(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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