【摘 要】
：
This paper uses acoustical method to obtain the sound speed structure information of the deep sea sediment. The time-frequency characteristics of the explosive
【机 构】
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Institute of Acoustics, Academia Sinica, Shanghai
【出 处】
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Acta Oceanologica Sinica
论文部分内容阅读
This paper uses acoustical method to obtain the sound speed structure information of the deep sea sediment. The time-frequency characteristics of the explosive sound signals in the deep sea are analysed by using the narrow-band filters, and the bottom-reflecting path and bottom-refracting path are separated in time domain. Based on the two kinds of selected bottom models the travel-time difference between the two paths mentioned above is calculated according to the ray theory, and simple analytical formulae are obtained. The bottom model, which is more suitable for the experimental area, is identified by comparing the theoretical with experimental travel-time differences versus range.
This paper uses acoustical method to obtain the sound speed structure information of the deep sea sediment. The time-frequency characteristics of the explosive sound signals in the deep sea are analyzed by using the narrow-band filters, and the bottom-reflecting path and bottom Based on the two kinds of selected bottom models the travel-time difference between the two paths mentioned above is calculated according to the ray theory, and simple analytical formulae are obtained. The bottom model, which is more suitable for the experimental area, is identified by comparing the theoretical with experimental travel-time differences versus range.
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