高频地波雷达总体方案及工程实施中的几个主要问题

高频地波雷达总体方案及工程实施中的几个主要问题 Some Problems in General Scheme for HF Ground Wave Radar Engineering 杨子杰 YANG Zi jie 1 2 first-author 吴世才 WU Shi cai 1 2 侯杰昌 HOU Jie\|chang 1 2 文必洋 WEN Bi yang 1 2 石振华 SHI Zhen hua 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 从线性调频中断连续波 （FMICW）基本原理出发 ,结合雷达方程和相控阵技术 ,阐述了在 OS-MAR2 0 0 0总体设计和研制过程中遇到的几个主要问题 ,如雷达探测性能估计、雷达波形设计、雷达参数的选择、相控阵形式、I/ Q形成方式、数据采集与 Doppler提取、距离混迭与 Doppler频率混迭、零频干扰等 .东海现场实验表明 ,采用 12 0 m八元相控天线阵 ,“一发八收”、收发共用天线工作模式 ,平均发射功率 10 0 W,可实现 2 0 0 km,12 0°扇面海流探测和 10 0 km风浪探测 Some important problems in the system design and development of the HF Ground Wave Radar （GWR） OSMAR2000 are discussesd, concerning 1) estimation of GWR detection capabilities;2) frequency modulated interrupted continuous wave （FMICW） and pseudo noise phase modulation; 3) means to oppress near\|sea echos;4) broad\|beam phased array antenna and digital beam forming （DBF） technique; 5) echo signal processing and zero\|frequency interfere restricting approaches; 6) forming mode of I/Q; 7) elimination of distance overlap and Doppler frequency overlap. In the fieldwork in Chinese East Sea we found that by using 120 m long, 8 antenna in which one for transmitting and all 8 for receiving, OSMAR2000 can detect current more than 200 km away with 120° augular coverage and angular resolutionin of 2° to 5° in the daytime, and wind and wave at the distance of 100 km. Our next research will concentrate on antenna miniaturization and universal GWR hardware platform using software radio technique as well as improve inversion algorithm for wind and wave. 高频地波雷达 线性调频 相控阵 表面波 high frequency ground wave radar （GWR） linear frequency modulated （chirp） phased array antenna surface wave 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