DSFH系统的双信道接收平衡检测及判决结构设计  

The Study Status and Development Trend about Guidance Methods of Acoustic Homing Torpedo

作　　者：孟庆斌 孙慧贤 全厚德 崔佩璋 霍晓磊 MENG Qingbin;SUN Huixian;QUAN Houde;CUI Peizhang;HUO Xiaoei(Department of Electconic and Optical Engineening,Army Engineening University,Shijiazhuang 050003,China)

机构地区：[1]陆军工程大学(石家庄校区)电子与光学工程系,石家庄050003

出　　处：《火力与指挥控制》2023年第2期122-129,共8页Fire Control & Command Control

基　　金：军队科研基金资助项目(LJ20202C020390)。

摘　　要：对偶序列跳频系统较传统跳频通信具有很强的抗综合干扰能力,基于实际情况中存在的接收结构双信道平衡问题,提出了AWGN环境下仿真模型的信道平衡检测方法,分析了在AWGN环境平衡信道下的误码率及非平衡信道下的门限调整,设计了动态门限的判决结构。由链路仿真结果表明:在无信号时能够检测双信道接收结构的平衡状态;当信噪比在-22 dB~-14 dB变化时,非平衡信道下判决结构的检测性能达到了平衡信道时的性能要求。The dual sequence frequency hopping system has stronger anti-comprehensive interference ability than traditional frequency hopping communication.However,based on the dual channel balance problem of the receiving structure in the actual situation,the channel balance detection method of the simulation model in the AWGN environment is proposed.The bit error rate under the environmentally balanced channel of AWGN and the threshold adjustment under the unbalanced channel are analyzed,judgement struction ofa dynamic threshold is designed.The link simulation results show that the balance state of the dual-channel receiving structure can be detected without signals;when the signal-to-noise ratio changes from-22 dB to-14 dB,the detection performance of the judgemet structure under the unbalanced channel reaches the performance requirements of the balanced channel.

关 键 词：对偶序列跳频 双信道 平衡检测 动态门限 链路仿真 

分 类 号：TN92[电子电信—通信与信息系统]