Non-Gaussian ocean ambient noise model with certain kurtosis  

作　　者：SONG Guoli GUO Xinyi MA Li LI He 

机构地区：[1]Key Laboratory of Underuater Acoustic Enwironment,Chinese Academy of Sciences,Beijing 100190 [2]Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190 [3]Uniuersity of Chinese Academy of Sciences,Beijing 100049

出　　处：《Chinese Journal of Acoustics》2020年第4期498-511,共14页声学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(11874384);Key Laboratory Funds,Chinese Academy of Sciences(CXJJ-19S007)。

摘　　要：Based on sampling damped sinusoids uniformly,a non-Gaussian ocean ambient noise sequence with specific spectral characteristics and a specific kurtosis value is generated for the non-Gaussian ocean ambient noise simulation problem.Under the theoretical simulation conditions,it is found that when the kurtosis value is higher than 3.0 better simulation results can be obtained.But when the kurtosis value is less than 3.0,a method of down sampling or reducing the filter order should be adopted for the simulation implementation.A simulation analysis of ambient noise data from four ocean acoustic environments is given,including quiet environment noise data,ship noise data,air gun data and impulse like data,and the results show that under the above scenarios,the non-Gaussian ocean ambient noise with the goal spectrum characteristics as well as statistical characteristics can be produced,and the kurtosis value simulation error is less than 2.4%.

关 键 词：OCEAN CHARACTERISTICS environments 

分 类 号：P733.2[天文地球—物理海洋学] TN911.4[天文地球—海洋科学]