基于FPGA的多路光纤数据同步技术

Multiplex optical fiber data synchronization technology based on FPGA

针对当前相控阵雷达数字TR组件的设计,提出了一种基于光纤信号的同步方法,使得数据传输和雷达主触发同步集成在同一根光纤中,从而省去了传统采用专用触发进行同步控制的大量触发线,简化了相控阵系统有源面阵设计。经在实验板FPGA验证,该光纤同步技术能有效实现多板多片FPGA间的信号同步控制及处理,为后续的数字相控阵有源面阵的同步设计提供了更多的选择空间。

In view of the design of digital TR modules in current phased array radars,a new synchronization method based on the optical fiber signal is proposed,in which the data transmission and radar main trigger are integrated into the same optical fiber. Therefore,a mass of special trigger lines used for the synchronization control conventionally are not required to simplify the design of active planar arrays of phased array systems. Through the verification of the test board FPGA,this optical fiber synchronization technology can effectively implement the signal synchronization control and processing between multiple FPGAs,providing more space to choose from for the synchronization design of active planar arrays of the following digital phased array radars.