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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳琪芳(Chi-Fang Chen) | |
dc.contributor.author | Kuan-Jung Pan | en |
dc.contributor.author | 潘冠融 | zh_TW |
dc.date.accessioned | 2021-06-17T07:09:08Z | - |
dc.date.available | 2026-01-05 | |
dc.date.copyright | 2021-01-20 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2021-01-06 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72883 | - |
dc.description.abstract | 南海之水下環境非常複雜,使得南海海域具有高度的環境不確定性,因此在此海域進行聲學模擬會有較大的誤差。由於南海具有非常重要的戰略與經濟地位,因此了解此海域的聲納效能是必須也必要的。 本研究為了建立南海大範圍聲學模擬系統,使用海洋模式(Hybrid Coordinate Ocean Model, HYCOM)輸出之聲速剖面,搭配GBM聲學模式(Gaussian Beam Model)建立聲學模擬系統,為了使聲學模擬系統能包含環境不確定性藉此來強化的聲學模擬的準確性,本論文將分為兩大步驟。 第一步藉由2019年的南海聲學實驗所蒐集資料,來量化此聲學模擬系統音傳損耗不確定性的影響,研究結果顯示以海洋模式資料進行聲場預估之音傳損耗不確定性可以使用平均值為-0.86dB、標準差為3.07dB之常態分布表達。第二步將此結果納入大範圍模擬計算中藉此降低由音傳損耗預估誤差,使用大範圍模擬以觀察季變化月變化與日變化,南海之聲納效能在秋季效能最好冬季次之,淺水區較深水區好。 本研究可以預估不同時空變化下之聲納效能,可提供反潛作戰(Anti-submarine Warfare, ASW)決策判斷的依據。 | zh_TW |
dc.description.abstract | The underwater environment of the South China Sea is very complicated, which makes the South China Sea waters have a high degree of environmental uncertainty. Therefore, there will be large errors in acoustic simulation in the South China Sea. Since there has a very important strategic and economic position, it is necessary to understand the sonar performance in this area. In order to establish a large-scale acoustic simulation system in the South China Sea, this study uses the sound speed profile output by the Hybrid Coordinate Ocean Model and the GBM acoustic mode to establish an acoustic simulation system. Including environmental uncertainty to enhance the accuracy of acoustic simulation, this paper will be divided into two steps. The first step is to quantify the influence of the uncertainty of the transmission loss of this acoustic simulation system by the South China Sea Acoustics experiment in 2019. The research results show that the uncertainty of the sound transmission loss of the sound field estimation using ocean model data can be expressed in a normal distribution with an average value of -0.86dB and a standard deviation of 3.07dB . The second step is to incorporate this result into a large-scale simulation calculation to reduce the estimated error of transmission loss. Use large-scale simulation to observe seasonal changes, monthly and daily changes. Performances in the South China Sea Sonar is best in autumn and winter is the second-best, The shallow water area is better than the deepwater area. This thesis estimate the sonar performance under different time and space changes and can provide a basis for decision-making and judgment in anti-submarine warfare (ASW). | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T07:09:08Z (GMT). No. of bitstreams: 1 U0001-0401202114212500.pdf: 7912971 bytes, checksum: bb65696654ecb9dd4f89f1ff803a9e85 (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | 誌謝 I 中文摘要 II 英文摘要 III 目錄 IV 圖目錄 VI 表目錄 IX 第一章 緒論 1 1.1 前言 1 1.2 研究動機與目的 2 1.3 文獻回顧 3 1.4 論文架構 8 第二章 研究方法 9 2.1 高斯射線群法理論(GAUSSIAN BEAM MODEL) 9 2.2 距離與頻率平均方式 15 2.3 聲波互換理論 18 2.4 偵測機率 21 2.5 ANOVA 分析 25 2.6 掃幅寬度 27 第三章 2019年實驗介紹 28 3.1 佈放位置 28 3.2 實驗錨碇 30 3.2.1 聲學接收錨碇串 (S1T站) 31 3.2.2 聲學接收與聲源錨碇串 (S2T站) 33 3.2.3 海洋物理錨碇串 (S1A站) 35 3.2.4 海洋物理錨碇串 (S2A站) 35 3.3 水下聲學拖曳式載台 36 3.4 資料處理流程 37 3.5 各測線計算結果 42 第四章 模擬結果與實驗結果分析比較 44 4.1 模擬參數設定 44 4.2 模擬與實驗比對 45 4.3 偵測距離統計分析 52 第五章 聲納偵測校能模擬與分析 56 5.1 模擬點位及參數設定 56 5.2 計算結果討論與統計分析 59 5.2.1 季度變化 59 5.2.2 月變化 66 5.2.3 日變化 68 第六章 結論與建議 69 6.1 結論 69 6.2 未來展望 70 參考文獻 71 | |
dc.language.iso | zh-TW | |
dc.title | 南海北部海域水下偵測音響參數模擬與統計分析研究 | zh_TW |
dc.title | Simulation and Statistical Analysis of Underwater Acoustic Detection in the Northern South China Sea | en |
dc.type | Thesis | |
dc.date.schoolyear | 109-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 黃乾綱(Chien-Kang Huang),彭巧明(Chiao-Ming Peng),林勝豐(Sheng Fong Lin),邱永盛(Yung-Sheng Chiu) | |
dc.subject.keyword | 中國南海,水中聲學,聲納效能,模式模擬, | zh_TW |
dc.subject.keyword | South China Sea,Underwater Acoustic,Sonar Detection Performance,Modeling Simulation, | en |
dc.relation.page | 73 | |
dc.identifier.doi | 10.6342/NTU202100008 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2021-01-07 | |
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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