基于Qt平台的ISAR成像系统软件设计与实现

Design and Implementation of ISAR Imaging System Software Based on Qt Platform

摘要: 针对传统基于Labview的逆合成孔径雷达(ISAR)成像系统数据传输的低实时性与相对繁琐的操作流程，设计了一种基于Qt平台的ISAR成像系统软件，该系统使用Qt软件集成成像系统控制端。首先上位机根据伺服电机通信协议通过串口端发送电机控制指令用于生成ISAR转台实验场景，接着利用用户数据报协议(UDP)将控制信号发送给中控板卡，板卡根据指令控制驱动源发射雷达射频信号，经过混频后得到中频信号，板卡采集中频信号并通过传输控制协议(TCP)将数据传输给上位机，最后调用距离多普勒(RD)成像算法处理数据得到ISAR图像。实验结果表明，该系统拥有更快且稳定的数据传输性能，成像具有强实时性，且由于其控制端的高集成性，系统软件架构清晰并易于操作。

Abstract: In view of the low real-time data transmission and relatively tedious operation process of the traditional inverse synthetic aperture radar (ISAR) imaging system based on Labview, an ISAR imaging system software based on Qt platform is designed. The system uses Qt software to integrate the control terminal of the imaging system. First, the upper computer sends motor control instructions through the serial port according to the servo motor communication protocol to generate the ISAR turntable experiment scene. Then, the control signal is sent to the central control board card by using the user datagram protocol (UDP). The board card controls the driving source to transmit radar RF signals according to the command controls, and gets the IF signal after the mixing of the radar transceiver module. The board collects IF signal and transmits the data to the upper computer through transmission control protocol (TCP). Finally, it calls the distance Doppler (RD) imaging algorithm to process the data and get ISAR image. The experimental results show that the system has faster and stable data transmission performance, and imaging has strong real-time. Moreover, the system software architecture is clear and easy to operate because of the high integration of the control terminal.