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利用多谱勒谱参数检测破碎海浪,提出了一种基于稳态海浪谱模型的判决门限获取方法。利用判决门限获知多谱勒谱对应的海浪是否发生破碎,从而得到海洋中破碎发生的时间和位置。实测数据表明,检测结果与传统碎波统计方法建立的破碎库高度一致。将检测结果应用于海浪参数提取算法,对破碎发生位置提取的海浪参数进行算法修正后,得到的有效浪高和平均海浪周期的误差明显下降,进一步验证了此检测算法的可靠性。
Using the Doppler spectrum parameters to detect the broken waves, a method for obtaining the decision threshold based on the steady-state wave spectrum model is proposed. The judgment threshold is used to know whether the wave corresponding to the Doppler spectrum is broken or not, so as to obtain the time and location of the crushing in the ocean. The measured data show that the test results are consistent with the crushing library established by traditional statistical methods. Applying the test results to the algorithm of extracting sea wave parameters, the error of the effective wave height and the average sea wave period obtained after the correction of the sea wave parameters extracted from the location of the crush is significantly reduced, further verifying the reliability of the detection algorithm.