Underwater acoustic signal noise multistage suppression and robust positioning system and positioning method

An underwater acoustic signal and positioning system technology, applied in positioning, radio wave measurement system, advanced technology and other directions, can solve the problems of loss of measurement data, poor mobility, low reliability of underwater acoustic links, etc., to improve the matching degree, The effect of improving stability and reducing associated losses

Active Publication Date: 2021-07-27
HARBIN ENG UNIV
View PDF13 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the low reliability of the underwater acoustic link in the existing underwater acoustic positioning system, easily lead to

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
  • Underwater acoustic signal noise multistage suppression and robust positioning system and positioning method
  • Underwater acoustic signal noise multistage suppression and robust positioning system and positioning method
  • Underwater acoustic signal noise multistage suppression and robust positioning system and positioning method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0055] Specific implementation mode 1, a system and method for multi-level suppression of underwater acoustic signal noise and robust positioning in this implementation mode:

[0056] Among them, such as figure 1 As shown, the method is as follows:

[0057] Step S1, using the inertial information output by the inertial navigation system, the position information of the transponder, combined with the underwater acoustic positioning solution model, to predict the direction of arrival of the received signal, and at the same time, to predict the Doppler frequency offset of the received signal and the impulse response of the channel function to predict.

[0058] The signal direction of arrival prediction process in step S1 is: use the predicted position of the transponder in the matrix coordinate system to obtain the relative positional relationship between the transponder and the ultra-short baseline matrix, thereby determining the direction of arrival of the received signal.

...

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 discloses an underwater acoustic signal noise multistage suppression and robust positioning system and a positioning method, relates to an underwater acoustic positioning system and a positioning method, and aims to solve the problems of low reliability of an underwater acoustic link, easiness in causing measurement data loss and poor maneuverability in an existing underwater acoustic positioning system. The system comprises an inertial navigation system, a transponder and an ultra-short baseline system. The inertial navigation system is fixed on the underwater mobile platform and is used for outputting inertial information and real-time speed information to the ultra-short baseline system according to the motion state of the underwater mobile platform; the transponder is used for communicating with the ultra-short baseline system; the ultra-short baseline system comprises a signal processing unit and an ultra-short baseline array, and the signal processing unit receives a response signal transmitted by the transponder through the ultra-short baseline array.

Description

technical field [0001] The invention relates to an underwater acoustic positioning system and a positioning method. Background technique [0002] In recent years, underwater acoustic technology has played an important role in resource exploration, scientific investigation, underwater acoustic communication, submarine monitoring network, and ocean operations. Underwater acoustic positioning is an important research branch of underwater acoustic technology. With its application in military and civilian fields such as underwater target tracking, marine resource development, and positioning and navigation of underwater moving carriers, it is becoming more and more extensive. [0003] Constrained by the marine environment and the working conditions of underwater mobile combat platforms, the propagation of sound waves in water will be affected by high noise, complex multi-channel expansion, and Doppler frequency shift. The link connectivity conditions are poor, and it is difficult...

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
IPC IPC(8): G01S5/22
CPCG01S5/22Y02D30/70
Inventor 张居成孙大军韩云峰郑翠娥崔宏宇张殿伦
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products