File:An effective noise filtering method for mine detection (IA aneffectivenoise109455576).pdf
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Summary[edit]
An effective noise filtering method for mine detection ( ) | |
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Author |
Hong, Bryan Y. |
Title |
An effective noise filtering method for mine detection |
Publisher |
Monterey, California. Naval Postgraduate School |
Description |
Automatic detection of sea mines in coastal regions is difficult due to highly varying sea bottom conditions present in the underwater environment. Detection systems must be able to discriminate objects that vary in size, shape, and orientation from naturally occurring and man-made clutter. Additionally, these automated systems must be computationally efficient to be incorporated into Unmanned Aerial Vehicle (UAV) sensor systems characterized by high sensor data-rates and limited processing abilities. Commonly used noise filters largely depend on the window (or neighborhood) size, which makes the mine detection ineffective. Using the bi-dimensional empirical mode decomposition (BEMD) analysis, an effective, robust sea mine detection system can be created. A family of decomposed images is generated and applied to optical lidar image data from the Rapid, Overt, Airborne, Reconnaissance (ROAR) experiment supplied by Naval Surface Warfare Center, Panama City. These decompositions project key image features, geometrically defined structures with orientations, and localized information into distinct orthogonal components or feature subspaces of the image. Application of the BEMD method to the analysis on side scan sonar data is also provided. Accurate detection and classification of mines is time consuming and requires divers or Autonomous Underwater Vehicles (AUV) in the water. The navy continues to pursue more expedient methods in mine countermeasures, and with airborne lidar, a surf zone (SZ) and landing zone can be quickly surveyed for possible mines. In the near surf zone, all possible mines can be quickly neutralized by dropping guided munitions, eliminating the need to send divers or AUVs to verify contacts. Still, the need for improved methods of detection and classification is needed. BEMD, a relatively new method of signal analysis developed about fifteen years ago, was tested on lidar imagery from the ROAR experiment to look for any improvements in detecting and classifying mines. Subjects: Meteorology; Weapons; Detection; Oceanography; Submarine mines |
Language | English |
Publication date | September 2011 |
Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
Accession number |
aneffectivenoise109455576 |
Source | |
Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States |
Licensing[edit]
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 10:22, 14 July 2020 | 1,275 × 1,650, 95 pages (17.19 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection aneffectivenoise109455576 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #6942) |
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Short title |
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Author | Elane |
Image title | |
File change date and time | 02:07, 21 October 2011 |
Date and time of digitizing | 02:01, 21 October 2011 |
Date metadata was last modified | 02:07, 21 October 2011 |
Software used | Acrobat PDFMaker 10.1 for Word |
Conversion program | Adobe PDF Library 10.0 |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |