一种机载SAR中心控制板的设计

Design of Central Control Card for An Airborne SAR System

本文介绍了无人机载合成孔径雷达系统中用于工作模式产生、雷达系统控制、数据传输的雷达中心控制板卡的设计与实现。板卡采用VPX总线,以两片ADSP TS201芯片作为核心处理器实现指令解析与高速信号处理,并结合FPGA完成逻辑控制和雷达时序控制,能够在处理传输大容量高速率数据流的同时实现与众多串口及PCIe设备的高效率数据通信。试验结果表明,该中心控制板能够控制雷达可靠、稳定的工作。

Design and implementation of a central control card used in unmanned air vehicle（ UAV） borne synthesizing aperture radar（ SAR） is presented; functions of the card include： operation mode control,radar system control and data transmission. Based on VPX bus,this card uses two ADSP TS201 chips as the core processor for command decoding and high-speed signals processing. Field programmable gate array（ FPGA） is used to implement logic control and timing control; therefore high data rate data flow can be transmitted and processed by the core processor,meanwhile data communication with several UART serial ports and PCIe device can be achieved efficiently. Experiment result shows that the card can control radar to operate efficiently and stably.