基于STM32的雷达信号跟踪控制系统设计

Design of Radar Signal Tracking Control System Based on STM32

摘要:

雷达信号跟踪控制系统是航空测控系统的重要组成部分,主要作用是对航空器进行探测定位跟踪；为了保证航空器运行过程中,天线能够实时地对准行航空器,保证通讯的稳定性和实时性,设计了一种基于STM32的雷达信号跟踪控制系统；雷达信号跟踪控制系统采用了STM32F407IG控制芯片作为信号跟踪控制系统的处理器；通过处理来自四相调制接收机的方位差电压ΔA信号和俯仰差电压ΔE信号,决定需要的控制动作；为了保证方位差电压ΔA信号和俯仰差电压ΔE信号的可靠性,设计实现了信号的硬件校正以及软件滤波；使用PWM脉冲功能控制步进电机转动,利用驱动器实现电机运动精度和速度的可控；采用高精度高速率的模数转换器提高差电压信号数字化的可靠性和实时性；采用旋转变压器实时反馈运动位置,形成闭环控制,保证运动的可靠性；通过软硬件的反复调试和测试,接收机输出的方位差电压ΔA和俯仰差电压ΔE电平保持在比较低的范围内,并且通讯长时间正常稳定,证明了雷达信号跟踪控制系统实现了对航空器的跟踪控制功能。

Abstract:

The radar signal tracking control system is an important part of the airborne measurement and control system.In order to ensure that the antenna can be aligned with the aircraft in real time, and ensure the stability and real-time of the communication, a radar signal tracking control system based on STM32 is designed.The STM32F407IG control chip is used as the processor of the signal tracking control system.The desired control action is determined by processing the azimuth difference voltage ΔA signal and the pitch difference voltage ΔE signal from the four phase modulation receiver.In order to ensure the reliability of the azimuth difference voltage ΔA signal and the pitch difference voltage ΔE signal, the hardware and software filter are designed.PWM pulse function is used to control the stepper motor rotation, and the motor can be used to control the motor precision and speed.To improve the reliability and real-time performance of the differential voltage signal by using the high precision and high speed ADC.Real time feedback is used to form the closed loop control to ensure the reliability of motion.Through repeatedly debugging and testing of software and hardware, the receiver output voltage range difference ΔA and pitch difference voltage ΔE level remained at relatively low range, and communication is normal and stable for a long time.This proves that the radar signal tracking control system realizes the tracking control of the aircraft.