三频段太阳射电望远镜与空间天气  

Two New 3-Bands Solar Radio Polarimeters and Spaceweather

作　　者：耿立红[1] 谭程明[1] 敦金平[2] 章宏 贾彦辉[4] 颜毅华[1] 陈志军[1] 马素丽 刘东浩[1] 杜静[1] 苏仓[1] Geng Lihong;Tan Chengming;Dun Jinping;Zhang Hong;Jia Yanhui;Yan Yihua;Chen Zhijun;Ma Suli;Liu Donghao;Du Jing;Su Cang(CAS Key Laboratory of Solar Activity（National Astronomic Observatories）,Beijing 100101,China;Key Laboratory of Space Weather,National Center for Space Weather,China Meteorological Administration,Beijing 100081,China;The 16th Research Institute of CETC,Hefei 230043,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China;China Lniversity of Petroleum,Qingdao 266580,China)

机构地区：[1]中国科学院太阳活动重点实验室(国家天文台),北京100101 [2]中国气象局空间天气重点开放实验室,国家空间天气监测预警中心,北京100081 [3]中国电子科技集团第十六研究所,安徽合肥230043 [4]中国电子科技集团第五十四研究所,河北石家庄050081 [5]中国石油大学,山东青岛266580

出　　处：《天文研究与技术》2018年第4期380-389,共10页Astronomical Research & Technology

基　　金：国家空间天气监测预警中心(国家卫星气象中心)项目(ZQC-H15080);国家重大科研装备研制项目(ZDYZ2009-3)资助

摘　　要：基于地基望远镜对太阳射电辐射流量进行长期监测是空间天气预报的一种重要手段,用来预报太阳活动引发的地球上的各种扰动。明安图和塔什库尔干两台新的三频段(10.7 cm,6.6 cm和3.3 cm)太阳射电望远镜将服务于我国的空间天气监测和预报,介绍了系统的结构和设计特性、双噪声源定标方法。系统稳定性优于1%(10 h),灵敏度优于1 sfu。展示了明安图太阳射电望远镜2017年试观测的初步结果。It is an important method of space weather predictor to monitor the solar flux continuously in long-term with the ground-based solar radio telescopes. Solar flux is one of the most useful observable indexes for predicting kinds of turbulence occurred on the earth excited by the sun activities and solar ultraviolet radiation. It represents the solar total activity level, especially the 10.7cm solar flux, which has long been used as solar activity index since 1960s. With the financial support of NSMC （ National Satellite Meteorological Center） and NAOC （National Astronomical Observatories） , two new 3-band radio telescopes used to monitor the solar flux on three wavelengths （ 10.7cm, 6.6cm and 3.3cm） have been set up in 2016 December in Mingantu Observatory of NAOC in Inner Mongolia province and in Tashkurghan in Xinjiang province. The two telescopes, named MST and TST separately, each consisting of a 3-m size diameter parabolic antenna, 2- 10GHz wide band two-polarization feed, a constant temperature front-end box, will give more time coverage to observe the sun with the distance between the two sites about 5000km and 2.67 hours zone away. Constant temperature of the front-box helps to keep the system stability, especially in Mingantu and Tashkurghan the weather changes severely from hour to hour. Alter calibrated, data sets of fits format will be uploaded automatically everyday through the internet to the data reduction center of NSMC, used as space weather monitoring data. Double noise sources method is first adopted in system calibration. The system stability is better than 1% in over 10 hours, system sensitivity is better than ls.f.u., with Af= 10MHz and At=0. ls. The electromagnetic environment of MAT is much better than that of TST. In 2017, MST has gotten some preliminary resuhs. In 2018, more efficient data can be expected, and further work will be done in system calibration and system stability testing and analyzing.

关 键 词：太阳射电辐射流量 望远镜 F10.7指数 定标 空间天气 

分 类 号：P162.11[天文地球—天文学]