基于相关测量MUSER馈源轴比的方法研究

发布时间：2018-03-09 07:24

  本文选题：综合孔径　切入点：明安图射电频谱日像仪　出处：《电子学报》2016年10期 　论文类型：期刊论文

【摘要】：明安图射电频谱日像仪是新一代太阳专用射电成像望远镜,超宽带双圆极化接收馈源是其关键技术之一.轴比是反映双圆极化馈源性能的重要指标,单天线测量轴比的传统方法需要标准天线辅助,本文采用基于相关测量干涉阵馈源轴比的方法,针对MUSER天线数目多,且为户外环境,根据天文观测的需求须经常测试天线的性能的特点,简化了干涉阵望远镜测量轴比的过程,且能够高效的得到准确的测量结果.文中对该方法的测量过程做了详细的说明,给出了部分天线的测试结果,结果同时反映了馈源的良好特性.
[Abstract]:As a new generation of solar radio imaging telescope, UWB dual circular polarization receiver is one of the key technologies. The axial ratio is an important index to reflect the performance of double circular polarization feed. The traditional method of measuring the axial ratio of a single antenna needs the aid of standard antenna. In this paper, the method of measuring the feed axial ratio of interference array based on correlation is adopted, aiming at the large number of MUSER antennas and the outdoor environment. According to the requirement of astronomical observation, the performance of antenna is often tested, and the process of measuring axial ratio of interference array telescope is simplified, and the accurate measurement results can be obtained efficiently. In this paper, the measurement process of this method is explained in detail. The test results of some antennas are given, which also reflect the good characteristics of the feed.
【作者单位】： 中国科学院国家天文台;中国科学院研究生院;中国科学院太阳活动重点实验室;
【基金】：国家重大科研装备研制项目(No.ZDYZ2009-3) 国家自然科学基金(No.11221063,No.Y011141001) 天文联合基金重点项目(No.U1231205) 青年基金(No.11203042)
【分类号】：P111.41
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本文编号：1587531