摘要
阐述利用太阳源法测量G/T值的基本公式,对各项参数进行了分析,总结了测试实用的公式和修正项目,给出了太阳源法测试G/T值的方法和使用条件。结合实际项目给出了测试结果,对测试误差进行了分析。测试结果分析表明,太阳源法与传统信标方法相比,采用太阳源法的测量误差精度优于±0.25 dB,因此该方法合理可行,可应用于天线系统G/T值测试。
This paper mainly focuses on G/ T value measurement by sun source,analyzes several parameters,and summarizes many practical measurement formulas and correction projects.The application manner and conditions of the sun source method have also been discussed.The paper concludes the test results of practical projects,and analyzes the test error.Compared with traditional beacon tower manner,the measurement error is better than ±0. 25 dB by sun source,Therefore,the sun source method is theoretically correct and feasible,and can be used in test of antenna G/ T.
出处
《无线电工程》
2014年第8期63-66,共4页
Radio Engineering
基金
国家高技术研究发展计划("863"计划)资助项目(2013AA122101)
关键词
G
T值
太阳源
功率谱密度
修正因子
G/T
sun source
power spectral density
correcting factor
