| 紫金山天文台13：7米射电望远镜天线表面精度的首次射电全息测量 |
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| 引用本文： | 韩溥,吕静.紫金山天文台13：7米射电望远镜天线表面精度的首次射电全息测量[J].天文学报,1994,35(2):209-214. |
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| 作者姓名： | 韩溥 吕静 |
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| 作者单位： | 中国科学院紫金山天文台，中国科学院上海天文台 |
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| 基金项目： | 紫金山天文台台长择优基金 |
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| 摘 要： | １９９２年１月，在紫金山天文台１３．７米毫米波望远镜上进行了用射电全息术的相位恢复方法测量天线表面精度的尝试。利用望远镜的２２ＧＨｚ系统，用强水脉泽源ＯＲＩＯＮ－ＫＬ作为信号源测量了天线的聚焦和偏焦方向图，采用Ｍｉｓｅｌｌ算法获得了天线口面上的相位分布，由此得到的天线表面相对于理想抛物面偏差的均方根值与１９８９年用经典的经纬仪带尺方法测量的结果基本相符。
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| 关 键 词： | 射电望远镜 射电全息术 天线 精度 |
THE FIRST RADIO HOLOGRAPHY MEASUREMENT FOR THE 14m TELESCOPE OF PURPLE MOUNTAIN OBSERVATORY |
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| Han Fu, Lu Jing, Wu Wen-da, Yin Xing-hui, Lei Cheng-ming.THE FIRST RADIO HOLOGRAPHY MEASUREMENT FOR THE 14m TELESCOPE OF PURPLE MOUNTAIN OBSERVATORY[J].Acta Astronomica Sinica,1994,35(2):209-214. |
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| Authors: | Han Fu Lu Jing Wu Wen-da Yin Xing-hui Lei Cheng-ming |
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| Abstract: | The phase-retrieval method for the radio holography of reflector antenna was tested on the 14m radio telescope of Purple Mountain Observatory in January 1992.The 22 GHz water maser in Orion-KL was observed for measuring the infocused and defocused antenna power patterns. The aperture phase distribution was then derived through the Misell algorithm. The mean square root of the antenna surface error derived from the aperture phase distribution is in agreement with the result measured in 1989 from the traditional theodolite-tape method. |
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| Keywords: | Radio telescope Radio holography |
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