正交频分复用技术在浅海环境水声通信的应用

Research on application of orthogonal frequency division multiplexing in underwater acoustic communication in shallow sea environment

海洋环境的水声通信不仅在军事领域有重要的意义,在商业和民用领域也具有重要的应用价值,是实现船舶定位、通信和导航必备的关键技术。水声通信具有高噪声背景、衰减性强、通信带宽窄等特点,因此,研究稳定、高质量的水声通信技术是一项行业内的热点研究。正交频分复用技术能够利用频域变换将信号的传输通道变换为若干个子频带,有助于提高水声通信的信号传输效率,提高信噪比。本文介绍正交频分复用技术的关键内容,基于此优化船舶浅海环境水声通信技术,并进行仿真测试。结果表明,基于正交频分复用OFDM技术的水声通信技术具有较高的通信质量,可以较好抑制噪声。

Underwater acoustic communication in marine environment is not only of great significance in the military field,but also has important application value in the civil and commercial fields.It is the essential key technology to realize ship positioning,communication and navigation.Underwater acoustic communication has the characteristics of high noise background,strong attenuation and narrow communication band.Therefore,the research on stable and high-quality underwater acoustic communication technology is a hot research in the industry.Orthogonal frequency division multiplexing technology can transform the signal transmission channel into several sub-frequency bands by frequency domain transformation,which is helpful to improve the signal transmission efficiency and the signal-to-noise ratio of underwater acoustic communication.This paper introduces the key technology of orthogonal frequency division multiplexing,based on which the underwater acoustic communication technology in shallow sea environment is optimized,and the simulation test is carried out.