本文選題：綜合孔徑　切入點(diǎn)：明安圖射電頻譜日像儀　出處：《電子學(xué)報(bào)》2016年10期 　論文類(lèi)型：期刊論文

【摘要】：明安圖射電頻譜日像儀是新一代太陽(yáng)專(zhuān)用射電成像望遠(yuǎn)鏡,超寬帶雙圓極化接收饋源是其關(guān)鍵技術(shù)之一.軸比是反映雙圓極化饋源性能的重要指標(biāo),單天線測(cè)量軸比的傳統(tǒng)方法需要標(biāo)準(zhǔn)天線輔助,本文采用基于相關(guān)測(cè)量干涉陣饋源軸比的方法,針對(duì)MUSER天線數(shù)目多,且為戶外環(huán)境,根據(jù)天文觀測(cè)的需求須經(jīng)常測(cè)試天線的性能的特點(diǎn),簡(jiǎn)化了干涉陣望遠(yuǎn)鏡測(cè)量軸比的過(guò)程,且能夠高效的得到準(zhǔn)確的測(cè)量結(jié)果.文中對(duì)該方法的測(cè)量過(guò)程做了詳細(xì)的說(shuō)明,給出了部分天線的測(cè)試結(jié)果,結(jié)果同時(shí)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(guó)科學(xué)院國(guó)家天文臺(tái);中國(guó)科學(xué)院研究生院;中國(guó)科學(xué)院太陽(yáng)活動(dòng)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重大科研裝備研制項(xiàng)目(No.ZDYZ2009-3) 國(guó)家自然科學(xué)基金(No.11221063,No.Y011141001) 天文聯(lián)合基金重點(diǎn)項(xiàng)目(No.U1231205) 青年基金(No.11203042)
【分類(lèi)號(hào)】：P111.41
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本文編號(hào)：1587531