本文係利用富立葉近似法（Fourier approximation method）配合波壓實驗數據解析波浪的波形變化，進而求得壓力轉換函數Kp值。同時探討轉換函數Kp值與各波浪因子間的關係，並且將解析所得之Kp值建立一轉換函數經驗式，利用經驗式轉換實驗壓力頻譜為水位頻譜並與實驗水位頻譜相比較，探討經驗式應用於不規則波之適用性。
研究結果顯示，本文解析所得之波高及轉換函數Kp值均能達到一定的精確度，且隨著壓力計設置深度的變小，誤差也隨之變小。解析之轉換函數Kp，和波高H、壓力計設置深度z、水深d、週期T等因子均有明顯的關係存在。本文之轉換函數經驗式，以 H/d、z/d、ω2|z|/g取代陳（2002）經驗式中ω2|H|/g、ω2|d|/g、ω2|z|/g各無因次參數，應用於規則波實驗數據時，其精確度能有效的提升；應用於不規則波時，轉換之水位頻譜不但與實驗水位頻譜相當的吻合，且轉換水位頻譜於高頻處，不正常放大的情況也較為輕微，顯示本文之經驗式不論應用於規則波或不規則波均較適合。

The purpose of this study is to co-operate with wave pressure data to analyze wave variety by Fourier approximation method, and derives pressure transfer function Kp; moreover, it probes relationships between transfer function Kp and each wave factor, and an empirical expression of the transfer function between wave height and wave pressure was obtained from these Kp data which is analyzed, then transform the experimental pressure spectrum into a transfer wave spectrum by the empirical expression, which is taken advantage of comparison with experimental wave spectrum to probe into the empirical expression how to apply to irregular wave.
The study showed that the statement of the purpose of the study declares that wave height and Kp both must reach specific accuracy, and inaccuracy is getting smaller and smaller when depth of manometer diminishes. There both are obvious existing relationship between transfer function Kp and factors as wave height H、manometer depth z、water depth d and circle T , etc. The empirical expression of the study mentioned is that the parameter H/d、z/d、ω2|z|/g replaces chen (2002)ω2|H|/g、ω2|d|/g、ω2|z|/g, whose accuracy would heave effectively to put regular wave experiment data in use . And transfer wave spectrum coincide with experimental wave spectrum when it put irregular wave in use, and its irregular enlargement is more smaller when transfer wave spectrum is in high frequency , which showed that empirical expression of transfer function can agree with regular wave and irregular wave.

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