关于太阳厘米-分米波段频谱日像仪研究进展

摘要：在无线电波段进行射电观测是研究太阳的一个十分重要的手段，不同波段的无线电波反映出不同的特性和状态，其辐射频率与环境参数密切相关。当探测出某一频率上的无线电辐射后，即可诊断源区的电子密度或磁场。因此，建设厘米-分米波段频谱日像仪将首次在该波段上实现同时以高空间、高时间和高频率分辨率观测太阳活动的动力学性质，探测日冕大气。对于太阳物理研究具有重要作用。本文介绍该项目的科学意义、技术方案及预研进展情况。

Progress on Chinese Solar Radioheliograph in cm-dm Wavebands

A new Chinese radioheliograph project(CSRH) at multiple frequencies in the dm-cm wave range with 100 antennas of is proposed.A prototype study of 2-element interferometer has been built and tested for overall design since 2004.The prototype system includes two 4.5m antennas,feed and LNA(low noise amplifier),optical transmitter,optical fibril,optical receiver,RF(radio frequency) receiver,and digital correlator receiver.The site survey for future location of the CSRH array is carried out and a radio quiet region in Inner Mongolia appears promising.The progress about the project is introduced in the present work.