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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 宋國士 | |
dc.contributor.author | Shih-Ching Wang | en |
dc.contributor.author | 王詩靚 | zh_TW |
dc.date.accessioned | 2021-06-14T16:42:16Z | - |
dc.date.available | 2008-08-04 | |
dc.date.copyright | 2008-08-04 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-08-01 | |
dc.identifier.citation | Bjorn Jalving, 1998, Depth Accuracy in Seabed Mapping with Underwater Vehicles, Norwegian Defence Research Establishment(FFI).
Didier Guériot, Julien Chèdru, Sylvie Daniel, and Eric Maillard, 2000, The Patch Test: A Comprehensive Calibration Tool for Multibeam Echosounders, Oceans 2000 MTS/IEEE Conference and Exhibition, vol.3, p1655-1661. Headquarters, Department of the Army, 1994, Hydrographic surveying, Engineer Manual 1110-2-1003, U.S. Army Corps of Engineers, Washington, D.C. IHO, 1998, International Hydrographic organization, Standards for Hydrographic survey, Special publication #44, 4th edition, Draft after 2nd meeting of S-44 WG. Reson, 1997, Seabat 9001 Operators Manual, version2.2, Reson, Inc. USA. S.A. Hughes, T.L. Prickett, M.W. Tubman, and W.D. Corson, 1995, Monitoring of the Yaquina Bay entrance north jetty at Newport, Oregon; summary and result, Technical Report CERC-95-9, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Terri L. Prickett, 1996, Coastal Structure Underwater Inspection Technologies, Coastal Engineering Technical Note, US army Engineer Waterways Experiment Station. Z. Yoshida, A. Asada, Y. Ikeda, and M. Komatsu, 2004, High Precision Survey by the Multi-Beam Sonar in the Dam Site, Oceans’04 MTS/IEEE Techno-Ocean’04, vol.2, p1133-1138. 翁聖博,2005,在斜坡多音束側擊的資料分析硏究,國立臺灣大學海洋硏究所碩士論文。 任偉麗,2003,淺水多音束測深系統扇形音束精度之分析研究,國立台灣大學海洋研究所碩士論文。 陳明欽,2002,淺水多音束聲納測深資料的誤差分析研究,國立台灣大學海洋研究所碩士論文。 劉佩琨、宋國士,2000,多音束測深在沿岸淺灘區之量測,第二屆近岸水深技術研討會論文集,第3/23-3/36頁。 李建鋒,2007,近濱區外淺水海域多音束地形測量的影響因素探討,國立台灣大學海洋研究所碩士論文。 肖付民、劉雁春、暴景陽,2001,多波束換能器艏線偏移對多波束測深品質的影響,測繪通報,第7期,第27-31頁。 NOAA: Office of Coast Survey http://chartmaker.ncd.noaa.gov/ RESON: SeaBat Multibeam Sonars http://www.reson.com/sw1122.asp Google Earth http://earth.google.com/intl/zh-TW/ | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40181 | - |
dc.description.abstract | 當我們在對水下地形進行測繪時,測量到邊界區域的時候會有很多的斜坡地帶,像是湖泊的邊坡、淺海海岸邊坡和一些工程上的堤防等等,施測時船無法到達這些邊界地區的水線位置,用音鼓正打的方式就沒辦法對於這些斜坡地帶作測量,所以必須把測深機音鼓側旋一個角度,使外側音束和水面平行來對邊界地區作測量。正打區和側打區資料經處理後必須要可以接合,但是在做資料整合時會有正打和側打資料不吻合的問題;為了解決這樣的問題,就應對於音鼓側旋的測深精度做探討。
從分析結果可以知道在多音束音鼓側打時橫搖角的偏差所引起的誤差效應,是會使所測得的邊坡地形變緩或變陡;縱搖角的偏差則是會使邊坡的測深誤差在最外面兩側的音束會最大,垂直入射坡面的音束所產生的測深誤差最小;而當有航偏角的偏差量時,在音鼓正下方之音束之誤差都會為零;且越向岸線指向的音束的誤差量越大,會使坡度變得越緩。 要使多音束測深系統利用音鼓側旋45度能精準的測量出邊坡地形,必須要先解決一連串的問題,並遵照我們認為可以將誤差效應減到最低的施測方法來進行野外工作。所以可以從資料結果知道若Seabat9001型測深機的音束以60度的入射角為門檻時,旋轉音鼓以得到邊坡延伸到岸邊位置的地形值,其邊坡的坡度的下限為30度;在施測時如果邊坡走向不是很平直,航線的彎曲容易造成指向上的測深誤差效應加大,故我們不應該任意的調整施測船隻的航向;且測量時若離岸距離適當則航偏角的誤差效應主要會來自於轉彎所造成的航偏角延遲的誤差量。 | zh_TW |
dc.description.abstract | When we are conducting underwater topography survey, in the bank region with steep slopes, in which cannot be measured by a down-looking multi-beam transducer. As a result it generally rotates the transducer such that the outermost beams can reach the surface of the slope. After survey, measurement collected by a down-looking multi-beam transducer will be merged the measurement collected by a tilted transducer, but experience indicated these two acts of data did not fit together while doing data processing. This study is the purpose to analyze the accuracy of soundings measured by a tilted multi-beam transducer.
Results indicate that roll offset angle shall cause the slope at inaccurate gradient, and the pitch offset angle brings a slope of concave / convex slopeness the error shall appears most in the outermost beams that approach toward coastline, and gives gentle slope. In order to make sure that we can have high accurate slope topography by using a multi-beam transducer rotated 45 degree to the slope, this study thus provide the guidelines which may reduce the error to its minimal. When using Seabat 9001 multi-beam system, a 45degree tilted transducer can only be applied to the slope more than 30degrees. In addition, survey track shall not follow the coastline of “S” shape, because it will create error measurement significantly. Finally, survey track shall close to coastline as near as possible to reduce the effect caused by yaw offset. | en |
dc.description.provenance | Made available in DSpace on 2021-06-14T16:42:16Z (GMT). No. of bitstreams: 1 ntu-97-R94241309-1.pdf: 11863579 bytes, checksum: d4a2ae1d70f43e0c8301afaea468af9f (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 口試委員會審定書………………………..………………………………………….i
致謝………………………………………………………………………………………………………………………..ii 摘要………………...……………………………………………………….……….iii Abstract ………………………………………………………………………….….iv 目錄……………………………………………….…………………………............v 圖目錄……………………………………………………….……………………...vii 表目錄…………………………………………………………………………..……x 第一章 緒論…....……….…………………………………………………….......1 第二章 多音束測深系統與疊合測………………………….………………….10 2-1多音束測深現場工作……………………….……………………………...10 2-1.1架設音鼓....................................................................................11 2-1.2姿態單元(Motion Reference Unit)裝設.......................................12 2-1.3定位單元...............................................................................…..14 2-1.4航線規劃及施測.........................................................................15 2-2現場疊合測試(Patch test).…………………………………..……….…...16 2-2.1橫搖角偏差Roll offset..………..……………………….…..……...18 2-2.2縱搖角偏差Pitch offset..…………………………….………….…19 2-2.3航偏角偏差Yaw offset..….…………..……….…….………..……20 2-3音鼓側旋45度之疊合測試..................................................................21 2-3.1橫搖角偏差Roll offset…..………………....…………..…………..21 2-3.2縱搖角偏差Pitch offset…………...………..……………………...22 2-3.3航偏角偏差Yaw offset……...……..………………….……….…..23 第三章 音束測深系統音鼓側打之誤差效應........................................................25 3-1側打資料的誤差分析............................................................................25 3-1.1橫搖角偏差效應……..................................................................30 3-1.2縱搖角偏差效應…......................................................................32 3-1.3航偏角偏差效應………...............................................................41 3-2利用音鼓正打和側打的資料分析誤差來源………................................46 3-2.1案例討論一…………………………………………..………….......49 3-2.2案例討論二…………………………………………………….……53 第四章 多音束測深系統側打在邊坡資料解析及展示……..………………....……57 4-1 霧社水庫現場疊合測試…………………………………….……….….…57 4-1.1橫搖角之疊合測試…………………..……………….………..….....59 4-1.2縱搖角之疊合測試………………………………..…………….…...61 4-1.3航偏角之疊合測試…………………………………..………..…......63 4-2 水壩壩體的測量……………………………………………………..…….66 4-3音鼓正打和側打於水壩測量資料的分析...............................................77 4-4自然邊坡的測量...................................................................................87 第五章 結論.......................................................................................................96 參考文獻.................................................................................................................99 | |
dc.language.iso | zh-TW | |
dc.title | 多音束測深機音鼓的側旋與測深精度的探討研究 | zh_TW |
dc.title | The Accuracy Study of Sounding Measured by a Tilted Multi-beam Transducer | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 陳民本,羅聖宗 | |
dc.subject.keyword | 音鼓側旋;橫搖角;縱搖角;航偏角;多音束測深, | zh_TW |
dc.subject.keyword | tilted transducer,multi-beam bathymetry,roll offset,pitch offset,yaw offset, | en |
dc.relation.page | 100 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-08-01 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 海洋研究所 | zh_TW |
顯示於系所單位: | 海洋研究所 |
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