| 摘要 |
PURPOSE:To measure a luminance temperature of an object to be measured in a short time by a method a control noise source is adjusted so as to release a control noise temperature possible to balance a reference luminance temperature corresponding to a target temperature of the object and the results of comparison between a measured luminance temperature and the reference luminance temperature are outputted. CONSTITUTION:The temperature of a liquid in a balloon 4 as detected with a temperature sensor 5 is brought into a control section 15 for measuring temperature through a thermometer 14. On the other hand, a noise temperature of a microwave radiated from an organism 1 is attenuated by the liquid in the balloon 4. In other words, the intrinsic luminance temperature of the organism 1 is replaced with the luminance temperature at an antenna 3 and the temperature thus obtained is defined as a reference antenna temperature (reference luminance temperature). Then, calculation is performed by an arithmetic function within the control section 15 for measuring temperature. Then, a control noise source in a microwave receiver 9 is set as noise temperature which should be balanced with the reference antenna temperature. Then, an output of the microwave receiver 9 is brought into the control section 15 for measuring temperature and an actually measured value of the microwave receiver 9 is compared with the reference antenna temperature to judge. |
