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Tuesday, July 21, 2020 | History

1 edition of Computer model of a high-resolution imaging sonar found in the catalog.

Computer model of a high-resolution imaging sonar

Rajendar Bahl

Computer model of a high-resolution imaging sonar

by Rajendar Bahl

  • 9 Want to read
  • 39 Currently reading

Published by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English

    Subjects:
  • HIGH RESOLUTION,
  • SONAR IMAGES,
  • COMPUTERIZED SIMULATION

  • About the Edition

    A computer model of a high-resolution sector-scanning sonar used for imaging objects against the sea bottom is presented. The model accounts for the sonar parameters, bottom backscatter, reflections from the target"s visible surface, and the target"s acoustic shadow. A variety of imaging scenarios can be simulated including the type of target, the target"s orientation relative to the sonar and the bottom, and the backscatter statistics. The acoustic images are presented in the conventional B-scan format. A new display format that is useful for visualizing the target"s silhouette is also presented. Visual perspective images of the scene are presented to serve as a reference for subsequent image reconstruction work. Preliminary results for 3-d reconstruction of the confining volume of the visible target surface are also presented. The simulation model and the results of the 3-d reconstruction demonstrate the promise of the application of image processing techniques for classification of objects using acoustic images. (kr)

    Edition Notes

    Other titlesNPS-62-90-011.
    StatementRajendar Bahl and John P. Powers
    ContributionsPowers, J.P., (John Patrick), Naval Postgraduate School (U.S.). Dept. of Electrical and Computer Engineering
    The Physical Object
    Paginationvi, 51 p. :
    Number of Pages51
    ID Numbers
    Open LibraryOL25454008M

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    The Lowrance® HOOK-5 fish finder/chartplotter combines excellent sonar features plus detailed chartplotting capabilities at an affordable price. CHIRP Sonar and optional DownScan ImagingTM technology give a clear and complete view of the underwater environment on a high-resolution, five-inch color display. Enhanced sonar sensitivity, excellent. The VSC is equipped with a high-resolution firewire color video imaging system and is operated with a PC through Windows 0 Diffusion tensor imaging, the scanning method featured by BBC television's Tomorrow's World in February

    USB2 US12/, USA USB2 US B2 US B2 US B2 US A US A US A US B2 US B2 US B2 Authority US United States Prior art keywords data downscan sonar sonar data linear downscan Prior art date Legal status (The legal status is an assumption and is not Cited by: This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation.


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Computer model of a high-resolution imaging sonar by Rajendar Bahl Download PDF EPUB FB2

Abstract. We have been working towards the development of meaningful computer models for building imaging sonar systems and the external environment in which they operate 1– paper presents a Universal High Resolution Imaging Sonar Simulation Toolkit which is a software development tool for building imaging sonar simulators operating in a variety of underwater Cited by: 1.

High resolution sector scan and side scan sonars are useful in underwater acoustic imaging for obstacle avoidance search of mines, submarines, lost wrecks etc. The manual analysis of images is difficult because of huge information volume and unfavorable environmental by: 1.

Low-Power, High-Resolution 3D Sonar Imaging System [Steven R Broadstone] on *FREE* shipping on qualifying offers. Low-Power, High-Resolution 3D Sonar Imaging SystemAuthor: Steven R Broadstone.

Sonar (sound navigation ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Two types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is.

Robert D. Christ, Robert L. Wernli Sr., in The ROV Manual (Second Edition), Interpretation of sonar images. In many cases, the sonar image of a target will closely resemble an optical image of the same object. In other cases, the sonar image may be difficult to interpret and unlike the expected optical image.

Sonar imaging has numerous applications in the underwater domain. High-resolution sonar images are useful in marine research, underwater construction work, Author: Roy Edgar Hansen. Request PDF | Real-time noise reduction for sonar video image using recursive filtering | The forward-looking imaging sonar is a prospective solution for underwater visual surveying because it.

I mm. A high-resolution imaging sonar array of this kind has other potential uses besides minehuntin& both within defence and in the wider commercial area.

Array design is a key part in the overall project of developing the imaging sonar 0 system. The current literature survey was undertaken to assist DSTO staff andAuthor: David G. Blair. USB2 US12/, USA USB2 US B2 US B2 US B2 US A US A US A US B2 US B2 US B2 Authority US United States Prior art keywords side scan right side scan sonar left sonar Prior art date Legal status (The legal status is an assumption and is not a Cited by: Advanced signal processing handbook: theory and implementation for radar, sonar, and medical imaging real time systems | Stergiopoulos, Stergios | download |.

Side Scan Sonar/Side Imaging® Sonar 1 – Hull Mounted vs Towed. With the advent of inexpensive hull mounted sonar systems such as the Humminbird® Side Imaging® sonar and professional software, users want to know if this unit will be as effective as a towed side scan sonar system.

The answer is absolutely, positively, maybe. Expert contributors identify applications and assess the impact of and improvements in radar, sonar, and medical imaging systems.

This handbook develops a generic processing structure, based on the similarities between radar, sonar, and medical imaging systems, to present an introduction to these new principles and applications. The accurate detection and identification of underwater targets continues as a major issue, despite, or perhaps as a result of, the promise of higher resolution underwater imaging systems, including synthetic aperture sonar and high frequency by: A high frequency, wide band sonar for high resolution imaging (English) EDO Model Sonar.

Blumenberg, K. | print version. Discrete computer simulation: a means of optimising resource scheduling at a dedicated test station.

Side-scan sonar (SSS) is used for obtaining high-resolution seabed images, but with low position accuracy without using the Ultra Short Base Line (USBL) or Short Base Line (SBL). Multibeam echo sounder (MBES), which can simultaneously obtain high-accuracy seabed topography as well as seabed images with low resolution in deep water.

Humminbird Series i HD DI Combo GPS-Sonar DualBeam PLUS and Down Imaging fishfinder with Side Imaging. Thanks to best-in-class HD screen resolution, incredibly clear Down Imaging plus dynamic SwitchFire Sonar, you won't miss a thing.

Timber, rocks, even fish-watch it all take shape on crystal-clear, 5 inch monochrome display/5(19). Sonar (originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in Submarine navigation) to navigate, communicate with or detect other types of technology share the name "sonar": passive sonar is essentially listening for the sound made by vessels; active sonar is emitting.

The theses contained in this book are selected from those whose authors were present at the 20th International Symposium on Acoustical Imaging.

held at Southeast University. Nanjing. China. during September It was the first. The accurate detection and identification of underwater targets continues as a major issue, despite, or perhaps as a result of, the promise of higher resolution underwater imaging systems, including synthetic aperture sonar and high frequency sidescan.

Numerous techniques have been proposed for computer aided detection to detect all possible mine-like objects, and computer. Digital image processing is the use of computer algorithms to perform image processing on digital images.

As a subfield of digital signal processing, digital image processing has many advantages over analog image processing; it allows a much wider range of algorithms to be applied to the input data, and can avoid problems such as the build-upFile Size: 9MB.

This model, the most extensive ever used for SAS simulations, has been verified by comparison to a SAS ocean experiment performed by others. By the use of the model, the three dominant influences of ocean, platform, and signal processing may be studied on the performance of synthetic aperture sonar by: 9.In this paper, high-resolution 3-D radar imaging system configuration using a 3-step image formation procedure is analyzed and discussed [1,2].

To demonstrate the high-resolution of the imaging system, a 3-D facet-model of object is used and computer simulation was conducted.

In the 3-D radar imaging system, an object is illuminated by coherent.This paper presents a novel and practical convolutional neural network architecture to implement semantic segmentation for side scan sonar (SSS) image. As a widely used sensor for marine survey, SSS provides higher-resolution images of the seafloor and underwater target.

However, for a large number of background pixels in SSS image, the imbalance classification remains Author: Meihan Wu, Qi Wang, Eric Rigall, Kaige Li, Wenbo Zhu, Bo He, Tianhong Yan.