Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Seabed sonar reference beacon positioning method and device and seabed positioning system

A positioning method and reference technology, which are applied in the field of submarine sonar reference beacon positioning methods, submarine positioning systems and devices, can solve the problems of low positioning accuracy of submarine sonar reference beacons, cannot meet the requirements of high-precision underwater positioning, etc. Influence of error, effect of improving accuracy

Pending Publication Date: 2021-06-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a submarine sonar reference beacon positioning method, which aims to solve the existing submarine sonar reference beacon positioning method, which has low positioning accuracy of the submarine sonar reference beacon and cannot meet the high-precision underwater positioning requirements. The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Seabed sonar reference beacon positioning method and device and seabed positioning system
  • Seabed sonar reference beacon positioning method and device and seabed positioning system
  • Seabed sonar reference beacon positioning method and device and seabed positioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] 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 embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] It can be understood that the terms "first", "second" and the like used in the present application may be used to describe various elements herein, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first xx script could be termed a second xx script, and, similarly, a second xx script could be termed a first xx script, without departing from the scope of the present application.

[0033] In order to solve the problem that the existing submarine sonar reference beacon positio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is applicable to the technical field of sonar, and provides a seabed sonar reference beacon positioning method and device and a seabed positioning system, and the method comprises the steps: determining the coordinates of a transducer according to the attitude data of a measurement ship, the information of a lever arm and the coordinates of a GNSS antenna, and carrying out the epoch matching processing; according to the sound velocity profile data and the acoustic time measurement data, determining a back-and-forth sound velocity sound path distance between a transducer sound signal transmitting moment and a transducer sound signal receiving moment and the seabed reference beacon; according to the coordinates of the transducer, the approximate coordinates of the seabed sonar reference beacon and the sound velocity profile data, carrying out sound ray bending correction processing on the back-and-forth sound velocity sound path distance; and constructing a two-way sound path model to position the seabed sonar reference beacon according to the coordinates of the transducer, the approximate coordinates of the seabed sonar reference beacon and the back-and-forth sound velocity sound path distance. According to the method, the data quality is controlled by preprocessing the multi-source data, the change of the position of the transducer in the acoustic signal propagation process is considered, acoustic ray bending correction is carried out through acoustic ray tracking, the error influence is weakened, and the positioning precision is improved.

Description

technical field [0001] The invention belongs to the technical field of sonar, and in particular relates to a seabed sonar reference beacon positioning method, device and seabed positioning system. Background technique [0002] With the development of GNSS technology, the deployment of geodetic datum network on land is relatively perfect; however, because the electromagnetic waves emitted by satellites are significantly attenuated in water, they cannot penetrate deep water layers, and traditional satellite positioning methods cannot be directly used for the construction of submarine geodetic datum network . The submarine geodetic reference network is composed of a group of acoustic reference stations deployed on the seabed, forming a positioning system similar to the GNSS constellation. The layout and construction of the submarine geodetic reference network is inseparable from the high-precision positioning of each submarine reference station. The submarine reference station...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/18
CPCG01S5/18G01S5/186
Inventor 闫凤池王振杰赵爽聂志喜
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com