| 利用仙后座A测量16m天线G/T值及误差分析 |
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| 引用本文： | 王小强,秦顺友.利用仙后座A测量16m天线G/T值及误差分析[J].无线电工程,2009,39(11):46-48. |
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| 作者姓名： | 王小强 秦顺友 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北,石家庄,050081 |
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| 摘 要： | 阐述了利用仙后座A测量地球站天线G/T值的原理和基本公式,讨论了其修正因子的计算方法,介绍了用多项式拟合确定任意频率G/T值的方法。给出了C频段16m天线G/T值的测量结果,实测结果同理论计算结果吻合很好。对G/T值的误差进行了分析和估算,其最大均方根误差±0.384dB。
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| 关 键 词： | G/T值 仙后座A Y因子 误差分析 |
Measurement and Error Analysis for 16 Meter Antenna G/T Value Using Cassiopeia A |
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| WANG Xiao-qiang,QIN Shun-you.Measurement and Error Analysis for 16 Meter Antenna G/T Value Using Cassiopeia A[J].Radio Engineering of China,2009,39(11):46-48. |
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| Authors: | WANG Xiao-qiang QIN Shun-you |
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| Affiliation: | ( The 54th Research Institute of CETC, Shifiazhuang Hebei 050081, China ) |
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| Abstract: | This paper describes the principles and basic formulas of measuring earth station antenna G/ T value by using Cassiopeia A, discusses the calculation methods of correction factors are discussed, and introduces the method for estimating G/ T value of any one frequency by polynomial fitting. G/T value measurement results are given on an C-band 16m antenna, which shows good conformity to theoretical calculation. Finally, Errors of G/ T value measurement are analyzed and estimated using Cassiopeia A, the results show that max RMS error of G/T value measurement is less than or equal to ± 0.384 dB. |
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| Keywords: | G/T value Cassiopeia A Y-factor error analysis |
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