CAJ | 학술논문

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。
전통적수성통신발사신호지속시간장，은폐성차화항간우능력차。문중설계료일충단시졸발적확빈통신방법，용우선후적혼돈서렬작위다진제확빈통신적위수궤서렬，병장동보신호화수거신식분별방치재불동적자통도상，겁대지압축료발사신호시장。방진결과표명해방법능대대제고수성통신적항우화은폐성능。
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 opti-mized 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 .