海底沉积物声学测量中频谱分析方法应用研究

海底沉积物声学测量数据中包含着的频谱特征和信息，是区分和判别沉积物类型的重要依据。应用频谱分析方法，研究海底沉积物声学测量的频谱特征，分析声波探测仪器的性能，判断沉积物测量异常数据，研究温度变化下频漂现象，探寻到沉积物内在特征的一些规律性现象。并通过对两类沉积物的频谱分析结果比较，进一步论证区分沉积物的可行性。实测结果表明，频谱分析能够为声波探测仪器的性能测试及海底沉积物声学物理性质研究提供技术手段和分析方法。

Research on application of spectrum analysis in acoustic measurement of seabed sediments

Spectrum character in acoustic measurement datum of seabed sediments is a significant criterion for distin- guishing and classifying seabed sediment types. The acoustic measuring spectrum characteristics of seabed sediments are discussed including the analysis of acoustic instrument performance, the judgment of unwanted data, the frequency shift driven by temperature variation, and the regularity of characteristics of seabed sediments are discovered. The feasibility of distinguishing sediment types is demonstrated by comparing the spectrum analysis of two kinds of sediments. Measurement results prove that the spectrum analysis could provide a technical means and analytic method for the performance test of acoustic instrument and the study of acoustic-physical attributes of seabed sediments.