本文選題：綜合孔徑　切入點：明安圖射電頻譜日像儀　出處：《電子學報》2016年10期 　論文類型：期刊論文

【摘要】：明安圖射電頻譜日像儀是新一代太陽專用射電成像望遠鏡,超寬帶雙圓極化接收饋源是其關鍵技術之一.軸比是反映雙圓極化饋源性能的重要指標,單天線測量軸比的傳統(tǒng)方法需要標準天線輔助,本文采用基于相關測量干涉陣饋源軸比的方法,針對MUSER天線數(shù)目多,且為戶外環(huán)境,根據(jù)天文觀測的需求須經(jīng)常測試天線的性能的特點,簡化了干涉陣望遠鏡測量軸比的過程,且能夠高效的得到準確的測量結果.文中對該方法的測量過程做了詳細的說明,給出了部分天線的測試結果,結果同時反映了饋源的良好特性.
[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.
【作者單位】： 中國科學院國家天文臺;中國科學院研究生院;中國科學院太陽活動重點實驗室;
【基金】：國家重大科研裝備研制項目(No.ZDYZ2009-3) 國家自然科學基金(No.11221063,No.Y011141001) 天文聯(lián)合基金重點項目(No.U1231205) 青年基金(No.11203042)
【分類號】：P111.41
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本文編號：1587531