Microwave radiometer based on zero and differential measurement methods with high measurement rate

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Authors: Ubaychin A. V., Scheglyakov A. V., Abdirasul-Uulu T.

Annotation: A block diagram of a new high-speed microwave radiometer implemented on the zero and differential measurement methods are presented. The advantages of the simultaneous use of two measurement methods are shown: invariance to changing noise temperature and gain of the receiver when measuring slowly varying antenna noise temperature, and increased speed when measuring fast radio-thermal processes. A comparison of the operation of the proposed microwave radiometer in zero and modulation modes is illustrated.

Keywords: new measurement methods, zero measurement method, differ-ential measurement method, scientific instrumentation, high measurement rate, earth remote sensing, microwave radiometry, microwave radiometer