| 用等电平测量辐射计接收机的线性度 |
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| 引用本文： | 徐德忠. 用等电平测量辐射计接收机的线性度[J]. 宇航计测技术, 1998, 18(1): 1-4 |
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| 作者姓名： | 徐德忠 |
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| 作者单位： | 中国航天工业总公司二院二Ｏ三所 |
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| 摘 要： | 微波辐射计接收机的线性度是表征输入噪声温度与输出电压间的关系，采用双位开关衰减器法实现等功率电平测量微波辐射计接收机的线性度。该方法是在已知输出温度的低温噪声源之后，接有一个双位开关衰减器，这个双位开关衰减器只有二个档位，要么是直通，要么是通过一个固定的小衰减量。多次交替开关，可使达到接收机的输入量每次的增加是个相同量，这样就能完成接收机线性度的准确测量。简述测量原理、方法和测量不确定度分析。
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| 关 键 词： | 接收机线性度，微波辐射计，等功率电平 |
Measuring linearity of radiator receiver with the equivalent level |
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| Xu Dezhong. Measuring linearity of radiator receiver with the equivalent level[J]. Journal of Astronautic Metrology and Measurement, 1998, 18(1): 1-4 |
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| Authors: | Xu Dezhong |
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| Abstract: | We have realized an equivalent power level by using of two-way switch attenuator method in order. to measure linearity of radiator receiver. This paper describes the measuring principle, the measuring method, and analysis of the measuring uncertainty. |
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| Keywords: | Receiver linearity Microwave radiator Equivalent power level |
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