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radiometer for the determination of a temperature of a body, by measurement of the thermal noise issued and method of implementing this radiometer
radiometer for the determination of a temperature of a body, by measurement of the thermal noise issued and method of implementing this radiometer
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机译:通过测量发出的热噪声确定人体温度的辐射计及其实现方法
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摘要
The present invention relates to a radiometer for the determination of a temperature of a body, by measurement of the thermal noise emitted and a measurement process employing the radiometer. & br / radiometer characterized in that it is essentially constituted by a double chain (1) of an amplification of the radio frequency signals of the thermal noise, one of the arms (2 ') continuously measuring a signal of the thermal noise generated by a source of reference (3) determined on the other hand, by two sets of converter circuits (5, 5 ′, 6, 6 ′) in which the d.c. signals are transmitted to a control unit (8), processing and evaluation, and, finally, by means (9, 10, 11) of change of the modulating frequency transposing the frequencies of the radio frequency signals of the thermal noise treated in the two branches (2 and 2 ′).
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