Unlock instant, AI-driven research and patent intelligence for your innovation.

Collaborative detection method for multiple unmanned underwater vehicles on basis of compressed sensing

An underwater vehicle, compressive sensing technology, applied in radio wave measurement systems, instruments, measurement devices, etc., can solve problems such as not considering noise immunity

Inactive Publication Date: 2013-02-27
HARBIN ENG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods are more effective, they are theoretically proposed without considering the noise immunity problem in practical applications.

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
  • Collaborative detection method for multiple unmanned underwater vehicles on basis of compressed sensing
  • Collaborative detection method for multiple unmanned underwater vehicles on basis of compressed sensing
  • Collaborative detection method for multiple unmanned underwater vehicles on basis of compressed sensing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The specific implementation and process of the present invention will be further described below in conjunction with the accompanying drawings. The multi-UUV collaborative detection process is divided into two parts: space compression sampling and image reconstruction, such as figure 1 shown. These two parts are not isolated. During the execution process, the image reconstruction part uses the detection data of the space compression sampling part to update the state. The specific execution steps of the two parts are as follows:

[0019] 1. Spatial Compression Sampling

[0020] Binary pseudo-random coding is used for each array element of all UUV sonar arrays, and the coding is generated by a pseudo-random code generator, and the random code generator is realized by a shift register. The register maintains synchronization with the system time, and its digital unit performs a modulo 2 sum calculation in each clock cycle to generate a pseudo-random code bit by bit. The...

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 provides a collaborative detection method for multiple unmanned underwater vehicles on the basis of compressed sensing, comprising the following steps of: (1) taking one of multiple UUVs (unmanned underwater vehicles) as a mater UUV on the basis of the space compression sampling of the compressed sensing; taking other UUVs as slave UUVs; carrying out binary system pseudorandom coding on each array element of sonar arrays of all the UUVs; forming a detection matrix V by the coded vectors; (2) reconstructing based on a distributed image combined with an optimal estimation, whereineach slave UUV corresponds to one sub estimator, and the UUV corresponds to a master estimator; causing the master UUV and the slave UUVs to simultaneously and independently operate to carry out optimal estimation operation on a sonar receiving signal to obtain respective detection data; and then carrying out fusion processing in the main estimator to realize the purpose of reconstructing the sonar. With the collaborative detection method, time for obtaining images by each UUV node can be effectively shortened, the problem that multiple UUV nodes can not simultaneously detect same target can be solved, and the rapidity and the accuracy of underwater target detection can be improved.

Description

technical field [0001] The present invention relates to an underwater acoustic detection method, in particular to a multi-UUV cooperative detection method for underwater targets based on compressed sensing. Background technique [0002] Unmanned underwater vehicle (UUV, Unmanned Underwater Vehicle) is an indispensable tool for future marine development and application, and has broad development prospects. Since the detection angle and range of sonar carried by a single UUV are limited, multiple UUVs can form a cooperative detection system to expand the sensing range and improve detection efficiency. [0003] In the multi-UUV cooperative detection system, each UUV is equipped with a small phased array sonar. The traditional sonar detection method is a digital beamforming method, and it is very time-consuming to acquire and reconstruct an image. Although the imaging time can be shortened by reducing the number of scanning lines, this will reduce the lateral resolution of the...

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 Patents(China)
IPC IPC(8): G01S15/88
Inventor 张红梅刘胜
Owner HARBIN ENG UNIV