Multi-beam seafloor sub-bottom profile detection device

A detection equipment and multi-beam technology, applied in the direction of radio wave measurement system, measurement device, sound wave re-radiation, etc., can solve the problems of bulky matrix, low bandwidth utilization rate, unfavorable promotion and application, etc., and achieve the increase of quantity, large The effect of promotion and application value, system bandwidth utilization and detection efficiency improvement

Active Publication Date: 2014-09-24
HARBIN ENG UNIV
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a multi-beam submarine shallow stratum profile detection equipment for the problems of low system bandwidth

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
  • Multi-beam seafloor sub-bottom profile detection device
  • Multi-beam seafloor sub-bottom profile detection device
  • Multi-beam seafloor sub-bottom profile detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038]The present invention specifically relates to a kind of technology based on fractional Fourier transform (Fractional Fourier Transform, FrFT), transmits coded multi-component linear frequency modulation signal (Linear Frequency Modulation, LFM) with parametric array, adopts vector hydrophone wide beam The utility model relates to a multi-beam seabed shallow stratum section efficient detection equipment which simultaneously receives multi-component echo signals.

[0039] The application background of the multi-beam submarine shallow stratum detection equipment is large-area submarine shallow stratum profile survey. The equipment uses the LFM signal components with overlapping overlapping transmission bands of parametric arrays to detect. The signal parameters are selected to meet the requirements of the LFM signal in the fractional Fourier domain. The characteristics of energy gathering are very good. The wide beam of the vector hydrophone is used to receive multiple echo ...

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 relates to a multi-beam seafloor sub-bottom profile detection device. The multi-beam seafloor sub-bottom profile detection device comprises a dry end and a wet end. The dry end is composed of a transmitting module and a signal processing and display module, and the wet end is composed of a parametric array and a vector hydrophone. According to the multi-beam seafloor sub-bottom profile detection device, LFM detection signals with frequency bands overlapped are designed on the basis of an FrFT technology, the parametric array with a small aperture serves as a phased transmitting transducer, the vector hydrophone serves as a receiving transducer, and the aperture of the array is reduced while the system bandwidth utilization rate is increased. Because multi-component signals with frequency bands overlapped can be transmitted, the number of transmitted beams is increased, the system bandwidth utilization rate is greatly increased, the detection efficiency is greatly improved, and the multi-beam seafloor sub-bottom profile detection device is more suitable for large-area sea sweeping detection. Because the aperture of the array is reduced, the device is more convenient to carry and has higher application and popularization value.

Description

technical field [0001] The invention relates to a multi-beam seabed shallow formation profile detection device. Background technique [0002] Compared with the traditional single-beam shallow seabed detection, using multi-beam equipment for seabed shallow formation detection can obtain more abundant bottom information while improving measurement efficiency. The multi-beam subsea shallow stratum profile detection equipment adopts the working mode of space scanning and navigation detection. Traditional multi-beam submarine shallow formation detection equipment usually uses LFM signal components with non-overlapping frequency bands in different directions, and then performs frequency domain filtering on the multi-component echo signals received at the same time, thereby eliminating the aliasing between echo signals in different directions. In order to distinguish the arrival direction of each component signal, the purpose of detecting multiple survey lines at the same time is ...

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): G01S15/88
CPCG01S7/527G01S15/88
Inventor 李海森朱建军周天魏玉阔陈宝伟徐超杜伟东么彬魏波
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap