中山站高频雷达观测结果初步分析  

INITIAL RESULTS FROM THE ZHONGSHAN HF RADAR IN ANTARCTICA

作　　者：刘二小[1,2] 胡红桥[2] 刘瑞源[2] 吴振森[1] 吴铭君[2] 杨惠根[2] 张北辰[2] 

机构地区：[1]西安电子科技大学理学院,陕西西安710071 [2]国家海洋局极地科学重点实验室,中国极地研究中心,上海200136

出　　处：《极地研究》2012年第4期397-407,共11页Chinese Journal of Polar Research

基　　金：国家自然科学基金(41031064);国家"863"计划项目(2008AA121703);海洋公益性行业科研专项(201005017)共同资助

摘　　要：中山站高频相干散射雷达于2010年4月建成投入观测,并加盟SuperDARN雷达观测网,成为中国探测电离层对流的重要手段。首先简要介绍中山站高频雷达的工作原理及工作模式,然后利用该雷达第一年的观测数据,给出了每个波束观测的电离层回波总数随距离和回波强度、多普勒速度及谱宽的分布以及电离层回波发生率随频率的变化特性。观测结果和射线追踪的模拟计算表明,由于波束指向不同,电波矢量方向与地磁场形成正交条件的区域有所不同,因此会造成不同频率下,不同波束观测的电离层回波发生率的差别。The HF coherent scatter radar is one of the most powerful tools used to investigate ionospheric convection. The Zhongshan HF radar has been operational since April 2010, and is one of the SuperDARN network radars. The op- erational principles and procedures of the Zhongshan HF radar in Antarctica are introduced in this paper. Using da- ta from the first year＇ s observations the distribution of ionospheric echoes at each of 16 beams, the variation of ion- ospheric echoes with frequency are analyzed. The occurrence of ionospheric echoes at different frequencies is then presented. The results from observations and simulation by ray tracing show that the statistical difference of the oc- currence of ionospheric echoes between beams for different frequencies arises from the direction of beam pointing, and the area over which the beam can achieve orthogonality between the wave vector and the earth＇ s magnetic field.

关 键 词：中山站 高频相干散射雷达 电离层 射线追踪 

分 类 号：TN958[电子电信—信号与信息处理] P941.61[电子电信—信息与通信工程]