A Side Scan Sonar Image Target Detection Algorithm Based On A Neutrosophic Set And Diffusion Maps

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A Side Scan Sonar Image Target Detection Algorithm Based On A Neutrosophic Set And Diffusion Maps

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Author : Xiao Wang
language : en
Publisher: Infinite Study
Release Date :

A Side Scan Sonar Image Target Detection Algorithm Based On A Neutrosophic Set And Diffusion Maps written by Xiao Wang and has been published by Infinite Study this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.

To accurately achieve side scan sonar (SSS) image target detection, a novel target detection algorithm based on a neutrosophic set (NS) and diffusion maps (DMs) is proposed in this paper.

Side Scan Sonar Target Detection In The Presence Of Bottom Backscatter

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Author :
language : en
Publisher:
Release Date : 1983

Side Scan Sonar Target Detection In The Presence Of Bottom Backscatter written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.

The effect of bottom backscatter on target detection ranges for 100- kHz Klein and EG & G side scan sonars was investigated. Glass spheres of 16-cm diameter with measured target strengths of -24 dB were deployed in 30-m water depth, 0.7 m above sand and shale bottoms. Controlled test runs past a linear target configuration were performed. For a sand bottom, the Klein system yielded target detections at a maximum range of 150 m with 100% success. The EG & G system yielded 100% detection out to 152-m range, with detection 46% of the time at 259 m and 86% at 228 m. A shale bottom masked all target returns negating detection. Detection thresholds were estimated by comparing field results to theoretical ranges calculated from the sonar equation using applicable backscatter coefficients. The results show that it is possible to determine the geophysical and side scan system inputs sufficiently well to allow determination of the efficient spacing of survey lines in shallow water hydrographic applications of side scan sonar.

Change Detection Of Sea Floor Environment Using Side Scan Sonar Data For Online Simultaneous Localization And Mapping On Autonomous Underwater Vehicles

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Author : Timothy Pohajdak
language : en
Publisher:
Release Date : 2016

Change Detection Of Sea Floor Environment Using Side Scan Sonar Data For Online Simultaneous Localization And Mapping On Autonomous Underwater Vehicles written by Timothy Pohajdak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.

Autonomous underwater vehicles (AUVs) are frequently used to survey sea-floor environments using side-scan sonar technology. A simultaneous localization and mapping (SLAM) algorithm can be used with side-scan sonar data gathered during surveying to bound the possible error in AUV position estimate, and increase overall position accuracy, using only information already gathered during the survey mission. One problem in using SLAM to improve localization is that data from a preliminary or route survey on the sea floor may be inaccurate due to changes in the sea bed or merely be differently detected due to different side-scan sonar surveying patterns or equipment. This thesis' focus is an integrated on-board SLAM system using automated target recognition system to extract objects for SLAM data association, data association algorithms for MLOs (joint compatibility program), and finally change detection on the SLAM results to determine if new objects have been introduced to the sea floor.

Coherence Based Underwater Target Detection For Sidescan Sonar Imagery

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Author : James Derek Tucker
language : en
Publisher:
Release Date : 2009

Coherence Based Underwater Target Detection For Sidescan Sonar Imagery written by James Derek Tucker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Acoustic imaging categories.

Side Scan Sonar Target Detection In The Presence Of Bottom Backscatter

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Author : Maureen R. Kenny
language : en
Publisher:
Release Date : 1983

Side Scan Sonar Target Detection In The Presence Of Bottom Backscatter written by Maureen R. Kenny and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.

The effect of bottom backscatter on target detection ranges for 100- kHz Klein and EG & G side scan sonars was investigated. Glass spheres of 16-cm diameter with measured target strengths of -24 dB were deployed in 30-m water depth, 0.7 m above sand and shale bottoms. Controlled test runs past a linear target configuration were performed. For a sand bottom, the Klein system yielded target detections at a maximum range of 150 m with 100% success. The EG & G system yielded 100% detection out to 152-m range, with detection 46% of the time at 259 m and 86% at 228 m. A shale bottom masked all target returns negating detection. Detection thresholds were estimated by comparing field results to theoretical ranges calculated from the sonar equation using applicable backscatter coefficients. The results show that it is possible to determine the geophysical and side scan system inputs sufficiently well to allow determination of the efficient spacing of survey lines in shallow water hydrographic applications of side scan sonar.

Preliminary Results Of An Algorithm For Automatic Detection Of Mine Like Objects In Sidescan Sonar Images

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Author :
language : en
Publisher:
Release Date : 2000

Preliminary Results Of An Algorithm For Automatic Detection Of Mine Like Objects In Sidescan Sonar Images written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

This paper investigates the detection of possible targets in sidescan sonar images using two-dimensional convolutions of filters with the sidescan image. The filters are designed to reflect the highlight/shadow features of targets. A high convolution value indicates a possible target. Two data sets, one from the SQS-511 sonar and one from a Klein 5000 sonar towed by an autonomous vehicle, are analyzed. The results indicate whether this method may provide a robust method for automated target detection.

Analysis Of Side Scan Sonar Images Of A High Reflectivity Target

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Author :
language : en
Publisher:
Release Date : 1988

Analysis Of Side Scan Sonar Images Of A High Reflectivity Target written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.

Side-scan sonars deployed on towfish are a valued tool for imaging the sea bottom. This paper describes some recent observations in the practical effects of sidelobes and the effects of towfish attitude on the image. The images analyzed are of corner-cube reflectors, which give a very strong reflection visible over a wide range of angles. The internal structure of this reflection can be studied to investigate the beam pattern. It was also possible, in this case, to see an effect of towfish yaw.

Comparison Of Hyperspectral Imagery Target Detection Algorithm Chains

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Author : David C. Grimm
language : en
Publisher:
Release Date : 2005

Comparison Of Hyperspectral Imagery Target Detection Algorithm Chains written by David C. Grimm and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Computer algorithms categories.

"Detection of a known target in an image has several different approaches. The complexity and number of steps involved in the target detection process makes a comparison of the different possible algorithm chains desirable. Of the different setps involved, some have a more significant impact than others on the final result - the ability to find a target in an image. These more important steps often include atmospheric compensation, noise and dimensionality reduction, background characterization, and detection (matched filtering for this research). A brief overview of the algorithms to be compared for each step will be presented. This research seeks to identify the most effective set of algorithms for detecting a known target. Several different algorithms for each step will be presented, to include ELM, FLAASH, ACORN, MNF, PPI, N-FINDR, MAXD, and two matched filters that employ a structured background model - OSP and ASD. The chains generated by these algorithms will be compared using the Forest Radiance I HYDICE data set. Finally, ROC curves and AFAR values are calculated for each algorithm chain and a comparison of them is presented. Detection rates at a CFAR are also compared. Since a relatively small number of algorithms were used for each step, there were no definitive results generated. However, a comprehensive comparison of the chains using the above mentioned algorithms is presented"--Abstract.

Sonar Systems

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Author : Nikolai Kolev
language : en
Publisher: IntechOpen
Release Date : 2011-09-12

Sonar Systems written by Nikolai Kolev and has been published by IntechOpen this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-12 with Technology & Engineering categories.

The book is an edited collection of research articles covering the current state of sonar systems, the signal processing methods and their applications prepared by experts in the field. The first section is dedicated to the theory and applications of innovative synthetic aperture, interferometric, multistatic sonars and modeling and simulation. Special section in the book is dedicated to sonar signal processing methods covering: passive sonar array beamforming, direction of arrival estimation, signal detection and classification using DEMON and LOFAR principles, adaptive matched field signal processing. The image processing techniques include: image denoising, detection and classification of artificial mine like objects and application of hidden Markov model and artificial neural networks for signal classification. The biology applications include the analysis of biosonar capabilities and underwater sound influence on human hearing. The marine science applications include fish species target strength modeling, identification and discrimination from bottom scattering and pelagic biomass neural network estimation methods. Marine geology has place in the book with geomorphological parameters estimation from side scan sonar images. The book will be interesting not only for specialists in the area but also for readers as a guide in sonar systems principles of operation, signal processing methods and marine applications.

Detection Of Camouflaged Targets In Cluttered Backgrounds Using Fusion Of Near Simultaneous Spectral And Polarimetric Imaging

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Author :
language : en
Publisher:
Release Date : 2000

Detection Of Camouflaged Targets In Cluttered Backgrounds Using Fusion Of Near Simultaneous Spectral And Polarimetric Imaging written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

The detection of low signature or camouflaged targets in cluttered backgrounds is a crucial problem in tactical reconnaissance. In the past few years, imaging spectral and polarimetric sensors have been evaluated for this application. Although these sensors have separately generated promising results, each imaging modality alone appears to have not achieved the desired level of target detection. Fusion of data from multiple sensing modalities may potentially improve performance to acceptable levels. In the case of a key issue is the correlation of the spatial location of the false detection within spectral and polarmetric imaging. This paper presents a study of a data set consisting of near simultaneous spectral and polarimetric images recorded from sensors colocated on North Oscura Peak in the White Sands test range. The sensors overlooked a scene composed of natural background, military vehicles, and camouflage material. The sensors operated in the visible band with nearly equal, simultaneous field of view. The RX anomaly detection algorithm was separately applied to each data set to obtain a two dimensional map of target and false detection. The paper will analyze the correlation of false detection for image fusion. Background segmentation of the hyperspectral and polarization data sets was also examined.