中文摘要：

海洋环境噪声是海洋声场的背景场，通常被当作干扰项。在传统的水声学和海洋声学中，对海洋环境噪声的研究目的大多是为了降低或抑制环境噪声对水下设备的干扰，提高水下设备的性能和作用距离。目前，许多国家纷纷投入力量，开展海洋环境噪声数据获取、分析及噪声场建模工作。从另一个角度考虑，海洋环境噪声是海洋中永恒存在的声场，包含了水体及海底海面等环境特性信息。因此，可利用海洋环境噪声来研究海洋环境物理特性，通过低代价换取丰富的海洋声学信息。若能对海洋环境噪声的宽频带和任意时间存在的特性加以利用，则可以从海洋环境噪声中提取出相关的海洋环境参数。

英文摘要：

Ocean ambient noise is usually considered as an interfering background fac-tor. In traditional underwater acoustics, research has mainly focused on the reduction and re-striction of ambient noise interference in underwater devices in order to enhance device perfor-mance and detection range. For this purpose, many countries have invested a lot of manpower and material resources to collect and analyze data and propose models of the ambient noise field. On the other hand, this noise is ever present in the ocean, and includes a great deal of environmental information concerning the hydrology, sea surface and seabed. Consequently, ocean ambient noise may be used to study the physical characteristics of the ocean, as well as to obtain a high yield of useful ocean acoustical information at low cost. By exploiting the wide frequency band and perpetual ambient noise, we may extract many ocean environment parameters.