高频地波雷达的电离层杂波识别新试验  

Ionospheric measurement with HF ground wave radar system

作　　者：沈伟[1] 文必洋[1] 李自立[1] 黄晓静[1] 杨静[1] 

机构地区：[1]武汉大学电波传播实验室,湖北武汉430079

出　　处：《电波科学学报》2008年第1期1-5,22,共6页Chinese Journal of Radio Science

基　　金："十五"高科技发展计划项目(2001AA631050)

摘　　要：为了验证电离层杂波干扰的存在及研究其对高频地波雷达性能的影响,武汉大学电波传播实验室在浙江舟山东沙试验基地利用高频地波雷达完成了电离层杂波干扰识别新试验。试验采取改变地波雷达发射天线结构即改变发射天线的波束指向,使得电磁波垂直向上发射,进行电离层垂直探测试验;同时也有部分能量向海洋传播,从而获得海面Bragg散射回波。与此相对应地采用垂直极化的三元八木天线向海洋表面发射电磁波,同时获取海洋回波与电离层杂波。详细介绍了试验过程并对实测结果进行了初步分析,并介绍了新近研制的便携式高频地波雷达OSMAR-S的系统结构及其工作参数。In order to validate and study ionospheric interference in HF radar system, the remote-sensing of ionosphere with the HF ground radar system is firstly accomplished by Radio Propagation Lab. （RPL） of Wuhan University at Zhoushan Zhejiang Province. The structure of transmitting antenna （that is the direction of beam pattern）of the radar is changed for electromagnetic wave is transmitted upwards vertically to accomplish ionosphere remote sensing. At the same time, the echo scattered by sea surface can be also received by receiver. Correspondingly, a Yagi antenna with vertically-polarized is used to transmit the electromagnetic wave towards the sea surface, the echo of sea surface and the ionospheric interference may be received synchronously. The process of ionospheric measurement, analysis results and the newly designed portable HF radar system and its work parameter are introduced in this paper.

关 键 词：高频雷达 电离层垂直探测 电离层干扰 

分 类 号：TN011.2[电子电信—物理电子学]