| 综合孔径辐射计灵敏度计算公式的比较 |
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| 作者单位： | 华中科技大学电子与信息工程系 武汉430074 |
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| 摘 要： | 灵敏度是综合孔径辐射计的关键技术指标。文中对现有文献中综合孔径辐射计的灵敏度计算公式进行归纳与比较,并证明在被测场景的亮度温度分布均匀的条件下,综合孔径辐射计的灵敏度和反演得到的亮度温度(即图像的亮度温度)的标准差在数值上是几乎相等的。
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| 关 键 词： | 综合孔径辐射计 可见度函数 本底噪声 灵敏度 |
Camparison of the Sensitivity Formulas of the Synthetic Aperture Radiometer |
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| Authors: | Land Liang Zhang Zuyin Guo Wei Gui Liangqi |
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| Institution: | Land Liang Zhang Zuyin Guo Wei Gui Liangqi |
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| Abstract: | Temperature sensitivity is a key parameter of the synthetic aperture radiometer.In the paper,a comparison is done among the formulas of sensitivity.It is deduced that the numerical value of sensitivity of the synthetic aperture radiometer is approximately equal to the standard deviation in the estimated brightness temperature on the condition of the uniformly distributed brightness temperature of the measured scene. |
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| Keywords: | Synthetic aperture radiometer Visibility function Noise floor Sensitivity |
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