本文引用Ahn(2000)利用最大熵法所推得之機率密度函數建立二階、三階與四階無因次波高機率密度函數模式（MEM2 PDF、MEM3 PDF與MEM4 PDF），藉由模擬不規則波試驗的波高分佈之 檢定及分析各階無因次波高機率密度函數所含參數與Ur數的相關性之良窳，比較各階無因次波高機率密度函數模式的優劣，並與雷禮分佈及常態分佈加以比較。

　　研究結果顯示，本文所建立的各階無因次波高機率密度函數模式，以模式MEM2 PDF之模擬結果較不理想，而模式MEM3 PDF與模式MEM4 PDF模擬結果的 檢定值相當接近；且模式MEM3 PDF中所含的各參數與Ur數之相關性最為良好，因此本文建議以模式MEM3 PDF做為模擬不規則波浪的無因次波高機率密度函數之模式。

　　本文利用模式MEM3 PDF中所含參數與Ur數的迴歸式建立經驗模式，經檢定結果發現，經驗模式具有相當之適用性。

　　This study derived dimensionless wave height probability density function(MEM2, MEM3 and MEM4 PDF) by applying Maximum Entropy Method (Ahn 2000) and examined the results of simulated irregular wave trials by test. Furthermore we evaluated the parameters of the PDF and compared with Rayleigh and normal wave height distributions.

　　In the analysis, it indicated that the simulated results of MEM3 PDF and MEM4 PDF are close but the results of MEM2 are not ideal as the others. It shows that the parameters of MEM3 PDF and Ursell number hold the high correlation. MEM3 PDF performed the best practice in simulations.

　　Affirmed by the test, the experienced model has considerable applications.

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