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设计一种运动目标射频特征信号模拟器,该模拟器可以应用于广泛的领域,具有很大的实际意义。提出一种基于直接数字频率合成技术和虚拟仪器的设计方案,包括直接数字频率合成模块、MCU模块以及软件控制界面模块。MCU主要完成对DDS芯片的控制和接收控制台软件参数等功能;DDS模块主要完成接收MCU控制,产生所需波形等功能;软件模块主要完成串口通信和信号的各种参数设置等功能。
The design of a moving target RF feature signal simulator, which can be applied to a wide range of fields, is of great practical significance. A design scheme based on direct digital frequency synthesizer and virtual instrument is proposed, including direct digital frequency synthesis module, MCU module and software control interface module. The MCU mainly completes the functions of controlling the DDS chip and receiving the software parameters of the console. The DDS module mainly completes the functions of receiving MCU control and generating required waveforms. The software module mainly completes the functions of serial port communication and signal parameters setting.