高频地波雷达接收机研制

高频地波雷达接收机研制 Design of HF Ground Wave Radar Receiver 杨子杰 YANG Zi jie 1 2 first-author 田建生 TIAN Jian sheng 1 2 高火涛 GAO Huo tao 1 2 吴雄斌 WU Xiong bin 1 2 时玉斌 SHI Yu-bin 1 2 武汉大学电子信息学院 武汉大学电子信息学院 School of Electronic Information,Wuhan University School of Electronic Information,Wuhan University 武汉大学电子信息学院,湖北,武汉,430072 武汉大学电子信息学院,湖北,武汉,430072 论述了调频中断连续波 （FMICW）信号解调原理 ,分析了用于海洋环境监测、采用 FMICW体制接收机的特点 ,给出了相控阵高频地波雷达多通道接收机的技术要求及设计要点 ,对工作在干扰和噪声特别大环境中的短波低频段接收机提出了应采取的抗干扰措施 .现场实验表明 ,该多通道接收机在选择性、灵敏度和抗干扰性能方面达到了设计技术指标要求 High-frequency（HF） radar based on ground wave propagation is used for remotely sensing ocean surface currents and gravity waves parameters. OSMAR2000（Ocean State Measuring and Analyzing Radar Manufactured in 2000） is based on a frequency modulated interrupted continuous wave（FMICW） type waveform. This paper describes the following features of OSMAR2000 multi-channel receiver: the principle of FMICW demodulation, the key receiver technique points which must be notified in the phase of practical design, some methods on anti-jamming when radar is in the atmosphers of intensive noise, and the techniques of improving sensitivity and selectivity of receiver.The experimentation demonstrates the validity of the developped OSMAR2000 receiver. 高频雷达接收机 相控阵 调频中断连续波 HF GWR radar receiver phased antenna array FMICW P715.7 国家 8 63计划资助项目 （863 -818-0 1-0 2 ） 2001-05-01 2021-04-01 5