基于参量阵的MFSK水声通信技术研究  

The research of MFSK in the underwater acoustic communication based on parametric array

作　　者：李兴勇[1] 宋业强[1] 李伦[1] 陈敏[1] 

机构地区：[1]电子科技大学航空航天学院,四川成都611731

出　　处：《电子设计工程》2016年第19期184-187,共4页Electronic Design Engineering

摘　　要：介绍了参量阵理论和MFSK水声通信原理及特点。在水声通信中,由于水声信道具有有限的信道带宽、随机时变-空变-频变和信道多途干扰的特性,这些因素都制约着水声通信技术发展。针对上述一些问题,提出了一种基于参量阵的MFSK水声通信方式,并给出了基于参量阵定向传输算法的调制方法,利用信道的非线性作用实现参量阵的自解调得到调制信号。仿真、实验结果表明:这种具有高度指向性的通信方式在水声通信中具有明显的抗干扰能力,能有效的抑制信道的多途效应。这种具有较高的水声通信质量的方式在水下通信中具有很高的应用价值。Introduces the theory and characteristic of parametric array and MFSK in the underwater acoustic communication.Water acoustic channel has a limited bandwidth, random time-varying, space-variable, frequency-dependent and signal＇s multi-path interference, these factors restrict the development of underwater acoustic communication technologies. In order to solve these problem above, We proposed a new way of MFSK in the underwater acoustic communication, and the method of modulation for the directional transmission based on parametric array, which can get signal demodulated by the parametric array＇s self-modulation under the channel＇s nonlinear interference. It proved by the simulation and experiment that： this high directional way of underwater acoustic communication can resist the noise interference, inhibit the multi-path interference. The high quality way of underwater acoustic communication has a high value in the underwater communication.

关 键 词：MFSK 水声通信 非线性作用 多途效应 

分 类 号：TN929.3[电子电信—通信与信息系统]