地基太阳雷达探测方法研究  

Ground-Based Solar Radar Detection Method and Research

作　　者：高冠男[1,2] 郭少杰[1,2] 董亮[1,2] 汪敏[1,2] GAO Guannan;GUO Shaojie;DONG Liang;WANG Min(Yunnan Observatories,Chinese Academy of Sciences,Kunming 650216,China;Center for Astronomical Mega-Science,Chinese Academy of Sciences,Beijing 100012,China)

机构地区：[1]中国科学院云南天文台,云南昆明650216 [2]中国科学院天文大科学研究中心,北京100012

出　　处：《雷达科学与技术》2022年第1期1-6,14,共7页Radar Science and Technology

基　　金：国家自然科学基金(No.11941003);中国科学院“西部之光”人才培养计划;天文联合基金培育项目(No.U2031133);天文联合基金重点项目(No.U1831201);云南省应用基础研究计划面上项目(No.2019FB009)。

摘　　要：雷达天文学开始于20世纪40年代,不同于天文望远镜接收天体发射的信号的被动观测手段,雷达探测是一种主动观测天体的手段。太阳雷达是利用雷达发射器主动向太阳发射特定波段的电磁波,并接收反射回波,通过研究回波的性质,了解日冕磁场结构、日冕物质抛射(CME)的运动状况等重要信息。本文回顾了利用地基太阳雷达对日冕进行观测研究历史,对地基太阳雷达近些年被边缘化的原因进行了分析,最后还对中国太阳雷达的发展进行展望,地基太阳雷达可以为日冕磁场测量和对地CME的观测及预警预报提供一个全新的探测手段。Radar astronomy,which began in the 1940s,is different from the passive observation means of astronomical telescopes receiving signals from celestial bodies.Radar is a means of active observation of celestial bodies.Solar radar emits electromagnetic waves of a specific band to the sun and receives the reflected echoes.By studying the properties of the echoes,we can understand the magnetic field structure in the corona,the movement of coronal mass ejection(CME)and other important information.In this paper,the history of using ground-based solar radar to observe the corona is reviewed.The reason why ground-based solar radar has been marginalized in recent years is analyzed.Finally,the development of solar radar is prospected.Ground-based solar radar can provide a new detection method for the measurement of magnetic field and observation of the earth-directed CME.

关 键 词：雷达探测 太阳 日冕 日冕物质抛射 

分 类 号：P165[天文地球—天文学] TN95[电子电信—信号与信息处理]