基于ARM与FPGA的气象微波辐射计测控系统设计

Design of Measurement and Control System for Meteorological Microwave Radiometer Based on ARM and FPGA

针对中小尺度气象预测对微波辐射计的应用需求,提出一种气象微波辐射计数据测量与控制系统。该系统以STM32F4系列的ARM处理器为核心,以Altera Cyclone IV E系列的FPGA为辅助。通过设计系统整体结构、ARM处理器与FPGA芯片的外围电路以及相应的嵌入式软件,实现数据采集、上下位机通信、电压检测等功能。为提高后续的反演精度与时间分辨率,将FPGA与ARM处理器相结合,以同步采集接收机16通道的电压输出。实验结果表明,该系统能够对天线、噪声源状态、恒温开关等进行精确控制,且实时性较好。

Aiming at the application requirement of microwave radiometer for small and medium scale meteorological prediction,a data measurement and control system for meteorological microwave radiometer is proposed.The system takes the STM32F4 series ARM processor as the core and Altera Cyclone IV E series FPGA as the auxiliary.By designing the overall structure of the system,the peripheral circuits of ARM processor and FPGA chip,and the corresponding embedded software,the functions of data collection,communication between upper and lower computer and voltage detection are realized.In order to improve the precision and time resolution of the follow-up inversion,the combination of FPGA and ARM processor is used to synchronously collect the 16-channel voltage output of the receiver.Experimental results show that the system can accurately control the antenna,the state of noise source and the constant temperature switch,and has good real-time performance.