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为模拟雷达回波信号,验证波束形成情况,研究了雷达视频信号模拟器的体系结构、功能,给出了一种可实时模拟多路目标回波的雷达信号模拟器的实现方案。重点介绍了系统的硬件电路及其实现,叙述了多波束模拟的原理。该模拟器应用了DDS(直接式数字合成)和FPGA(现场可编程门阵列)等技术,具有较好的灵活性和通用性。可完成多波束视频信号产生的要求。
In order to simulate the radar echo signal and verify the beamforming, the architecture and function of the radar video signal simulator are studied. A realization scheme of the radar signal simulator which can simulate multiple target echo in real time is given. The system hardware circuit and its implementation are mainly introduced, and the principle of multi-beam simulation is described. The simulator uses DDS (Direct Digital Synthesis) and FPGA (Field Programmable Gate Array) and other technologies, with good flexibility and versatility. Multi-beam video signal can be generated to meet the requirements.