| 噪声源测量中修正转接头误差的一种方法 |
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| 引用本文： | 梁伟军,高秋来. 噪声源测量中修正转接头误差的一种方法[J]. 计量学报, 2011, 32(5): 463-465. DOI: 10.3969/j.issn.1000-1158.2011.05.16 |
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| 作者姓名： | 梁伟军 高秋来 |
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| 作者单位： | 中国计量科学研究院, 北京 100013 |
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| 摘 要： | 采用Y系数法对转接头的效率进行了测量,并分析了该方法对于噪声源输出噪声功率测量不确定度的影响。试验中采用同轴噪声测量系统对一个波导接头的气体放电管噪声源进行测量,由于使用了波导同轴转换接头,使其超噪比的测量不确定度由同轴系统的0.20 dB增加到0.23 dB。结果表明该方法可以简单而有效地修正转接头引入的误差。
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| 关 键 词： | 计量学 噪声源 Y系数 噪声温度 超噪比 转接头 |
A Method for Correcting the Error of Adapters during Noise Source Measurement |
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| LIANG Wei-Jun,GAO Qiu-Lai. A Method for Correcting the Error of Adapters during Noise Source Measurement[J]. Acta Metrologica Sinica, 2011, 32(5): 463-465. DOI: 10.3969/j.issn.1000-1158.2011.05.16 |
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| Authors: | LIANG Wei-Jun GAO Qiu-Lai |
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| Affiliation: | National Institute of Metrology, Beijing 100013, China |
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| Abstract: | Y factor method is adopted to measure the efficiency of the adapters,and the effect of the method on the uncertainty of the noise power measurement is analyzed.A gas discharge noise source with waveguide connect is calibrated by the coaxial noise measurement system and the measurement uncertainty of the excess noise ratio is enlarged a little from 0.20 dB to 0.23 dB caused by using a waveguide-coaxial adapter.The results of the measurement show that the method is simple and efficient. |
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| Keywords: | Metrology Noise source Y factor Noise temperature Excess noise ratio Adapter |
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