一种UUV集群的隐蔽水声通信低截获技术

A Low intercept technology for uuv cluster's covert underwater acoustic communication

针对当前水下无人航行器(UUV)或水下自主航行器(AUV)集群任务过程中水声通信隐蔽性不足的问题进行研究(简称UUV集群)。首先建立UUV集群的水声隐蔽通信分析模型,明确影响水声通信隐蔽性因素及实现隐蔽通信的技术途径;然后从工程实际的角度给出一种基于时频空及发射功率控制的UUV集群水声隐蔽通信低截获技术实现方法。采用波束定向、宽带混合扩频/编码通信与变步长发射功率控制等综合措施进行水声隐蔽通信系统设计。性能仿真结果表明,上述方法可大大提升UUV集群的水声隐蔽通信低截获性能。

This study addresses the problem of insufficient concealment in underwater acoustic communication during the task of underwater unmanned vehicles(UUV)or autonomous underwater vehicles(AUV)cluster(hereinafter referred to as UUV cluster).Firstly,an analysis model of underwater acoustic concealment communication for UUV cluster is estab-lished,and the factors affecting the concealment of underwater acoustic communication and the technical approaches to achieve concealment communication are clarified.Then,from the perspective of engineering practice,a method for realizing low-interception technology of underwater acoustic concealment communication for UUV cluster based on time-frequency-space and transmit power control is proposed.A comprehensive measure of beam direction,broadband hybrid spread spec-trum coding communication,and variable step size transmit power control is used to design the underwater acoustic conceal-ment communication system.The performance simulation results show that the above methods can greatly improve the low-interception performance of underwater acoustic concealment communication for UUV cluster.