摘要
传统的水声通信发射信号持续时间长,隐蔽性差和抗干扰能力差。文中设计了一种短时猝发的扩频通信方法,用优选后的混沌序列作为多进制扩频通信的伪随机序列,并将同步信号和数据信息分别放置在不同的子通道上,极大地压缩了发射信号时长。仿真结果表明该方法能大大提高水声通信的抗扰和隐蔽性能。
Traditional underwater acoustic communication signal has long duration,and poor covert performance and anti-jamming.In this paper,a short burst of spread spectrum communication method is designed.Chaotic sequence is optimized as a pseudo random sequence for M-ary spread spectrum communication,and the synchronization signal and the data are placed in different sub-channels,which greatly reduce emission signal duration.The simulation results show that this method can greatly improve the anti-jamming and covert performance of underwater acoustic communication.
出处
《舰船电子工程》
2014年第7期173-176,共4页
Ship Electronic Engineering
关键词
混沌序列
短时猝发
多进制扩频
隐蔽通信
chaotic sequence
short burst
M-ary spread spectrum
covert communication
