A High-Performance Microwave Radiometer Design for Sensing High-Temperature Objects

The present paper proposes a microwave radiometer design to improve the sensing speed for analysing high-speed thermal radio emissions generated by high-temperature objects. A block diagram of the microwave radiometer is provided and its operating algorithm is described. The present paper provides results of numerically simulated measurement of the variables of a high-speed thermal radio emission process by means of the proposed microwave radiometer. A numerical estimation has been provided for the integral error in the measurement of high-speed thermal radio emission processes as compared to a null microwave radiometer with controlled duty cycle of noise injection and a conventional modulation microwave radiometer. A new algorithm to reduce the measurement errors of high-speed thermal radio emissions processes is proposed. The criteria for choosing the time constant for the modulation and null channels of the proposed microwave radiometer are described. The effect of anomalous fluctuations in the transmission coefficient of a radiometric receiver on the results of measurements in the modulation mode as a function of the time constant and fluctuation sensitivity is shown.