2008-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/711753摘要：利用反算方式估算地聲參數所引起的不確定性，已是近年來水中聲學界所感興趣的問題。本研究計畫提議以兩年的時間，探討在地聲反算問題中，因量測資料與環境參數化過程的不確定性，所衍生反算參數不準確度的問題。具體而言，所探討的問題包括：(1) 如何由已知或隨機聲源（例如環境噪音）所產生的聲場，尋求有效的表達地聲環境模式；(2) 因資料或環境模式所產生地聲參數估算的不確定性；(3) 評估反算所得地聲參數之不確定性對於聲納效能的影響（例如，傳輸損耗之預測）。上述之些問題的探討，將藉由美國ONR 2006 年在New Jersey 外海所進行淺海聲學實驗所獲取之資料來進行分析。<br> Abstract: The uncertainties in the geoacoustic parameter estimation using inversion approach have been a great concern in underwater acoustic community in recent years. The objectives of this 2-year proposal are to study the uncertainty propagation incurred by measured data and environmental parameterization in geoacoustic inversion problems. Of specific technical interest is the development of techniques for: (1) Efficient representations of the ocean geoacoustic environment from various types of acoustic data, including sounds generated by controlled sources and opportunistic sources (e.g., ambient noise); (2) Estimations of uncertainties associated with data and geoacoustic parameters; (3) Mapping of these geoacoustic parameter uncertainties to the characterizations of applied interest (e.g. transmission loss prediction and adaptive signal processing). These techniques will employ field data collected during the ONR-sponsored Shallow Water 2006 experiment conducted in seawater off New Jersey coastal areas in USA.&#8226–不確定分析匹配場地聲反算誤差傳遞Uncertainty AnalysisMatched-field Geoacoustic InversionError Propagation