| 数字增益补偿及实时定标微波辐射计 |
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| 引用本文： | 李靖,张俊荣,邹彤.数字增益补偿及实时定标微波辐射计[J].电子学报,1999,27(3):49-51. |
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| 作者姓名： | 李靖 张俊荣 邹彤 |
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| 作者单位： | 1. 中国科学院长春地理研究所,长春,130021
2. 吉林工业大学,长春,130022 |
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| 摘 要： | 微波辐射计的长期稳定性，是影响最小可检测信号的主要因素。研究出数字增益补偿与实时定标两种新型微波辐射计。能完全消除系统增益波动的影响。有极好的长期稳定性。实时定标型还能消除系统噪声的波动，完成实时定标。在０．６ｓ时间常数下最小可检测信号分别达到０．１３和０．１９Ｋ，达到国内外先进指标。在实际中已得到应用。
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| 关 键 词： | 微波辐射计 射电望远镜 数字增益补偿微波辐射计 实时定标微波辐射计 |
Computer Gain Compensative and Continuously Calibrated Microwave Radiometers |
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| Li Jing,Zhang Junrong,Zou Tong.Computer Gain Compensative and Continuously Calibrated Microwave Radiometers[J].Acta Electronica Sinica,1999,27(3):49-51. |
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| Authors: | Li Jing Zhang Junrong Zou Tong |
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| Abstract: | Long term stability is the main factor that influences the minimum detestable signal of microwave radiometers. Two new types of microwave radiometer are develoed: a computer gain Compensative microwarve radiometer and a continuously calibrated microwave radiometer. The long term stability of both designs is optimal because they are insensitive to system gain fluctuations. The continuously calibrated microwave radiometer is also insensitive to system noise fluctuations. The minimum detectable signals are 0. 13 and 0. 19K respectively under an integration time of 0. 6s. |
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| Keywords: | Microwave radiometer Radio telescope Computer gain compensative microwave radiometer Continuously calibrated microwave radiometer |
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