摘要
S模式应答机在二次雷达系统中担任着重要的角色。结合工程实际,提出一种基于FPGA的S模式应答机中频数字信号处理方法,针对S模式特殊信号格式和突发询问的特点,给出了一种快速载波频率捕获的DPSK解调算法,提高了S模式应答机的灵敏度,降低了硬件使用资源。
The S mode transponder plays an important role in secondary radar system.Combined with the engineering practice,this paper presents a medium frequency signal processing method based on FPGA.According to the special signal format of S mode and the characteristics of burst query,a fast carrier head acquisition algorithm is presented,which improves the sensitivity of S mode transponder and reduces the use resource of hardware.
作者
吴秀明
贺星
WU Xiuming;HE Xing
出处
《现代导航》
2018年第5期343-347,共5页
Modern Navigation
关键词
S模式应答机
中频信号
载波捕获
S Mode Transponder
Medium Frequency Signal
Carrier Acquisition
