天线立体方向性图的测量
MEASUREMENT OF ANTENNA THREE-DIMENSIONAL PATTERN
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摘要: 本文叙述了以太阳为信标,用射电天文法测量天线立体方向性图的基本原理和方法。该测量方法用总功率辐射计作为接收系统,用计算机作为终端数据采集和归算系统。它能实时、快速处理,得到天线立体方向性图。被测天线口面直径为20m,波长为17.8cm,可测旁瓣电平约为41dB,精度约为0.6dB。
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关键词:
- 立体方向性图; 射电天文; 辐射计
Abstract: The fundamental principles and techniques of radioastronomical method by using the sun in the measurement of antenna three-dimensional pattern are described. And a total radiometer is used for measurement system. Collection and calculation of the data are performed,by the computer. The aperture and operating wavelength of the measured antenna are respectively 20m and 17.8cm. Measured level is estimated to be -41dB, and measured error is about 0.6dB. -
袁惠仁.通信学报,1988,9(6): 64-67.[2]袁惠仁,等著.天线参数的射电天文测量.北京:电于工业出版社,1987,89-93.[3]航天部503所,国家卫星气象中心电子部39所.2F CTS00-BG11天馈分机测试结果.1992-3, 1-35.[4]Yuan Huiren. 30m Antenna Parameters Measurement by Means of Radio astronomical Method Proc. of ISAE 93, Nanjing: 1993, 172-175.[5]袁惠仁,等.通信学报,1983,1(3): 56-60. -
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