摘要
跳频通信作为一种新型的通信体制,具有很强的抗截获、抗搜索、抗干扰、抗对抗等特点。美国及北约国家装备的战术信息分发系统以及地面、舰载、机载跳频电台和敌我识别系统等,均采用了跳频通信体制,具有高度的保密性和抗干扰性能。针对高速跳频信号频带宽、频点多且跳频速度快不利于快速检测的特点,提出了利用两片ADRV9009射频捷变芯片将高速跳频信号变换成零中频信号后,送FPGA经多相滤波数字信道化后完成多路通道信号接收处理的方案。该设计不仅简化了整个高速跳频信号前端宽带接收处理的流程,减小了前端模拟信道接收设备的体积,降低了系统的功耗,同时基于FPGA实现多相滤波的数字信道化设计大大增加了系统的灵活性,提高了后端高速跳频信号的检测和识别概率。
As a new type of communication system,FH communication has strong characteristics of anti-interception,anti-search,ant-interference and anti-antagonism.FH communication system is adopted in the tactical information distribution system,ground and shipborne and airborne FH radio stations and identification friend or Foe systems of the United states and NATO countries,which has high confidentiality and anti-interference performance.In view of the characteristics of high speed FH signal with wide frequency band,many frequency points and fast frequency hopping speed,this paper proposes to use two pieces of ADRV9009 RF agility chip to transform the high speed FH signal into zero IF signal,and then send it to PFGA through polyphase filtering digital channelization to complete the signal receiving and processing.The design not only simplifies the whole signal front-end wideband reception process,reduces the volume of the front-end analog channel receiving equipment,and reduces the power consumption of the system,but also greatly increases the flexibility of the syetem,and improves the detection and identification probability of high-speed frequency hopping signal in the end.
作者
王杰
Wang Jie(Southwest China Institute of Electronic Tecnology,Chengdu 610036,China)
出处
《电子技术应用》
2021年第12期26-30,共5页
Application of Electronic Technique
