噪声雷达中频信号产生与基带接收系统

System of Intermediate-Frequency Signal Generator and Baseband Receiver of Noise Radar

本文针对噪声雷达信号模型研究与实验的需求,基于高速FPGA、双通道高速DAC和双通道高速ADC芯片,开发了噪声雷达中频信号产生与基带接收系统.该系统的最大发射和接收信号带宽分别为220 MHz和200 MHz,可作为研究噪声雷达信号模型和处理算法的实验平台.介绍了系统的软硬件设计,给出了Chirp信号和混沌噪声信号的产生与接收采样以及处理结果,验证了设计的正确性和所开发平台的可用性.

To meet the requirement of signal model＇s research and experiment of noise radar,the system design of intermediate-frequency generator and baseband receiver of noise radar was introduced based on high-speed FPGA,dual-channel high-speed DAC and dual-channel high-speed ADC. The widest bandwidths oftransmitting and receiving signal are 220 MHz and 200 MHz respectively. The system can be used as an experiment platform to research signal model and processing algorithm of noise radar. The hardware and software design of the system are proposed. The validity of the design and feasibility of the development platform are verified by generating,receiving and processing the chirp signal and chaotic noise signal.