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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 郭振華 | |
| dc.contributor.author | Szu-Liang Tsai | en |
| dc.contributor.author | 蔡思亮 | zh_TW |
| dc.date.accessioned | 2021-06-12T17:59:16Z | - |
| dc.date.available | 2013-02-01 | |
| dc.date.copyright | 2008-02-01 | |
| dc.date.issued | 2008 | |
| dc.date.submitted | 2008-01-29 | |
| dc.identifier.citation | [1] Urick, R.J, “Principles of Underwater Sound,” McGraw-Hill,New York, 1975
[2] John P. Fish, ”Sound Underwater Images,” American Underwater Search and Survey, Ltd, 1990 [3] Klein, “Side Scan Sonar Record Interpretation,” 1985 [4] William H. Key, ” Side Scan Sonar Technology,” IEEE, 2000 [5] T. Caperan ,G. Hayward, ”A 3D Simulator for the Design and Evaluation of Sonar System Instrumentation,” University of Strathclyde, 1999 [6] Bell, J.M. and Linett, L.M., “A Model for the Simulation of Sidescan Sonar,” Proc. Inst. Acoust., 17, (8), pp. 223-232, 1995, [7] Bell, J.M., “A Model for the Simulation of Sidescan Sonar,” PhD thesis, Heriot Watt University, 1995 [8] F.H. Fisher, V.P.Simmons, “Sound Absorption in Sea Water,” J.Acoust. Soc. Am. 62(3), pp. 558-564,1977. [9] Francois, R.E., Garrison, G.R., “Sound Absorption Based on Ocean Measurements. Part IT: Boric acid contribution and equation for total absorption,” J. Acoust. Soc. Am., 1982, 72, (6), pp. 1879-1890 [10] Jackson, D.R., “Models for Scattering from the Seabed,” Pioc.Inst. Acoust, 1994, 16 [11] Alan B. Coppens, James V. Sanders, Monterery, ” Fundament of Acoustics,” American by John Wiley & Sons, Inc 1982 [12] L. M. Linnett, S. J. Clarke, C. Graham and D. N. Langhorne, “Remote Sensing of the Seabed using Fractal Techniques,” electronic journal, Oct. 1991, pp. 195-203. [13] L. M. Linnett, “Multi-Texture Image Segmentation,” Ph.D Thesis, Heriot Watt University, Edinburgh(1991). [14] D.T. Cobra, A.V. Oppenheim, J.S.Jaffe, ‘’Geometric Distortions in Side-Scan Sonar Images: A Procedure for Their Estimation and Correction,’’ | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27255 | - |
| dc.description.abstract | 本文探討側掃聲納訊號之模擬技術，藉由聲波在海水中之傳播將聲能傳達到目標物，接著經由目標物的反射與散射，再將部分聲能，經由反向路經傳回聲能接收器，並考慮拖魚本身的運動特性，最後在經由信號處理方式，轉換成聲納圖像，達到側掃聲納訊號模擬的目的。模擬過程中，利用碎形原理產生海床，其地形為一種隨機碎形地形，而利用雙站散射模型獲得目標物之反射訊號。本文主要貢獻為結合聲音在水中傳播特性、反射模型與拖魚運動特性，產生側掃聲納之模擬訊號。 | zh_TW |
| dc.description.abstract | This work presents the development of a side-scan sonar images simulator by considering the image formation processes of a side-scan sonar acoustic model and properties of terrain. The simulator involved acoustic propagation through the water medium, seabed scattering and towfish motion characteristics. Synthetic images are obtained by applying the bistatic scattering model. The seabed is generated using the fractal theory and the terrain is represented as a random fractal terrain. The outcome of the simulator has two aspects: the synthetic side-scan sonar signal and synthetic side-scan images. The simulator can be used as a tool to generate simulated side-scan signals for underwater exploration tasks. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-12T17:59:16Z (GMT). No. of bitstreams: 1 ntu-97-R93525041-1.pdf: 1674261 bytes, checksum: 77914ce61ed11f5fcc68718c80bb7237 (MD5) Previous issue date: 2008 | en |
| dc.description.tableofcontents | Table of Contents
致謝 ...........................................I 中文摘要........................................II Abstract........................................III Table of Contents...............................IV List of Figures .................................VII List of Tables ..................................X List of Symbols..................................XI Chapter 1 Introduction............................1 1.1 Foreword......................................1 1.2 Motivation....................................3 1.3 Literature Review.............................4 1.4 Thesis Organization...........................7 Chapter 2 Side-Scan Sonar Basics..................8 2.1 Introduction .................................8 2.2 Basic sonar principles........................9 2.3 Geometry of Side-scan sonar..................12 2.4 Along-track resolution ......................14 2.5 Across-track resolution......................16 2.6 Image Representation.........................17 Chapter 3 Underwater Acoustics for Side-Scan Sonar 20 3.1 Introduction ................................20 3.2 Underwater Sound Principles .................21 3.2.1 Sound velocity ............................21 3.2.2 Absorption.................................22 3.2.3 Spreading..................................25 3.2.4 Reflection.................................26 3.3 Scattering Models............................29 3.4 Active Sonar Models..........................31 Chapter 4 Side-Scan Sonar Images Formation.......33 4.1 Introduction.................................33 4.2 Simulated Sonar Images from flat seabed .....34 4.2.1 Assumptions................................34 4.2.2 Lambert's Law..............................36 4.2.3 Loss of energy on sonar image .............42 4.3 Simulated Sonar Images from rough seabed.....46 4.3.1 Introduction ..............................46 4.3.2 The Bistatic Scattering Model..............47 4.3.3 Results derived from the Bistatic Scattering Model ...........................................54 Chapter 5 Synthetic Side-Scan Sonar images.......56 5.1 The Algorithm of Random Fractal Terrain..........................................56 5.2 Synthetic Images containing objects on the seabed...........................................58 5.3 Synthetic Side-scan Sonar Images.............60 5.4 Vehicle Motion Effects.......................63 5.4.1 Vehicle Modeling...........................64 5.5 Simulation of images composed of several objects..........................................71 5.6 Simulated and Real Sonar Images..............74 Chapter 6 Conclusions ...........................76 References.......................................78 | |
| dc.language.iso | en | |
| dc.title | 側掃聲納模擬平台之建置 | zh_TW |
| dc.title | Design of a Side-Scan Sonar Simulation Platform | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 96-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 邱逢琛,曾慶耀 | |
| dc.subject.keyword | 側掃聲納,雙站反射模型,聲納圖像,碎形原理,模擬平台, | zh_TW |
| dc.subject.keyword | side-scan sonar,bistatic scattering model,sonar image,fractal method,simulator, | en |
| dc.relation.page | 79 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2008-01-29 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
| 顯示於系所單位： | 工程科學及海洋工程學系 | |
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|---|---|---|---|
| ntu-97-1.pdf 目前未授權公開取用 | 1.64 MB | Adobe PDF |
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