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A Method of Using Ultra-short Baseline to Realize Underwater Precise Operation

An ultra-short baseline and accurate technology, applied in the field of ship control, can solve problems such as difficult to reach, difficult position of the mother ship, and no change, and achieve the effect of improving precise positioning, reducing the difficulty of tedious work such as installation and debugging, and having a simple structure.

Active Publication Date: 2021-06-01
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of ultra-short baseline: the calibration after system installation needs to be very accurate, which is often difficult to achieve; the absolute position accuracy of the measurement target depends on the accuracy of peripheral equipment—gyro compass, attitude sensor and depth sensor
That is to say, the positioning accuracy is higher only in a limited cone below the base array, but due to the influence of wind, waves, and currents, it is difficult for the mother ship to ensure that the position does not change

Method used

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  • A Method of Using Ultra-short Baseline to Realize Underwater Precise Operation
  • A Method of Using Ultra-short Baseline to Realize Underwater Precise Operation

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail;

[0030] Such as figure 1 , 2 As shown, a method for realizing accurate underwater operation by using ultra-short baseline includes the following steps:

[0031] (1), system installation:

[0032] a. Select a reference point 2 on the mother ship 1, the X-axis passes through the reference point 2 and points to the heading of the mother ship 1, the Y-axis passes through the reference point and points to the starboard side of the mother ship, and passes through the reference point 2 and vertically downwards. The Z axis establishes the reference coordinate system of the right-hand mother ship; in the present invention, the reference point 2 selected on the mother ship 1 can be the center of gravity of the mother ship 1, or any other position on the mother ship 1.

[0033] b. Arrange a number of transducers according to certain rules to form the und...

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Abstract

The invention discloses a method for realizing accurate underwater operation by using an ultra-short baseline, comprising the following steps: (1), system installation, (2), acquisition of the geographic coordinate position of an underwater vehicle, (3), dynamic positioning: the present invention The relationship between the acoustic matrix coordinate system and the ship's sitting system does not need to be accurately measured during installation, and it is not necessary to quickly and effectively install and calibrate the ultra-short baseline positioning system at sea, which greatly reduces the cumbersome installation and commissioning of the mother ship. The difficulty of work, the present invention is simple in structure, and precision is high, has wide application prospect.

Description

technical field [0001] The invention relates to the technical field of ship control, in particular to a method for realizing accurate underwater operation by using an ultra-short baseline. Background technique [0002] With the rapid development of science and technology and the continuous exploration of nature, human footprints extend deeper and farther. In the sky, people are constantly breaking through the speed limit and marching towards the depths of the universe; underwater, people are constantly challenging the limit of diving and opening the door to the unknown ocean world. But no matter whether you go to the sky or go to the sea, you need navigation and positioning to provide position and attitude information. However, people's pace of ocean exploration is far behind that of the sky. The main reason is that electromagnetic wave signals are seriously attenuated in seawater, a highly conductive medium, and the higher the frequency, the more serious the attenuation. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B49/00B63C11/52G01S15/08G01S5/18G01S19/42
CPCB63B49/00B63C11/52G01S5/18G01S15/08G01S19/42
Inventor 孙永福张志平赵晓龙王立松张浩然李杨孙杨俞启军
Owner THE FIRST INST OF OCEANOGRAPHY SOA