数字增益补偿及实时定标微波辐射计

Computer Gain Compensative and Continuously Calibrated Microwave Radiometers

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．

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.