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高灵敏度实时定标微波辐射计
Study of High Sensitivity Continuously Calibrated Microwave Radiometer
【摘要】 本文提出了一种新形式的微波辐射计,即实时定标微波辐射计。这种体制的微波辐射计具有的特点是:不受增益波动的影响,不受本机噪声变化的影响,能够提供连续的定标,动态范围宽等。本文作者制作了一台C波段实时定标微波辐射计,积分时间为0.6s,灵敏度为0.2K,线性度为0.9990,适应于地面、机载及星载微波遥感。
【Abstract】 In this paper, a new type of microwave radiometer, continuously calibrated microwave radiometer was introduced. It has the following characteristics: 1) insensitive to system gain variations; 2) insensitive to receiver noise-temperature variations; 3) capable to provide continuous calibration; 4)wide range of measurement. The prototype of continuously calibrated microwave radiometer at C-band is made in our laboratory. The integration time is 0.6s, sensitivity is 0.2K, linearity of the receiver is 0.9990. It is adaptive for the ground, airborne and spaceborne microwave remote sensing.
【Key words】 Microwave radiometer Continuously calibrated microwave radiometer;
- 【文献出处】 仪器仪表学报 ,CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT , 编辑部邮箱 ,1999年06期
- 【分类号】TH765.2
- 【被引频次】8
- 【下载频次】145