Multi-channel microwave radiation measuring device

Abstract

The invention relates to a multi-channel microwave radiation measuring device. The multi-channel microwave radiation measuring device is characterized by comprising an antenna portion adapted to the K frequency band and the V frequency band, a receiving device and a microwave black body radiation source, wherein the receiving device and the microwave black body radiation source are connected with the K frequency band and the V frequency band. A feed source of the K frequency band of the antenna portion and a feed source of the V frequency band of the antenna portion are connected with a K frequency band receiver and a V frequency band receiver, and the output end of the K frequency band receiver and the output end of the V frequency band receiver are connected with a controlling unit. The two receivers share the same local oscillator. The microwave black body radiation source comprises a normal-temperature black body radiation source and a liquid nitrogen refrigeration black body radiation source, the normal-temperature black body radiation source and the liquid nitrogen refrigeration black body radiation source are arranged symmetrically about a rotary shaft of the reflective face of an antenna, and the pyramids of black bodies respectively face the rotary shaft. The multi-channel microwave radiation measuring device has the advantages of being capable of working under the condition of unattended operation for a long time, having the capability of continuously detecting the intensity spectrum of atmospheric radiation at a sensitive frequency band, and being capable of being used for continuous real-time monitoring on the atmospheric humidity and temperature profile.

Description

technical field [0001] The invention relates to a ground-based multi-channel microwave radiometer and relates to a multi-channel microwave radiation measuring device. Background technique [0002] As long as all substances are above absolute zero temperature, electromagnetic waves will be radiated outward at all times, and the electromagnetic waves radiated by the earth's atmosphere cover the entire microwave, millimeter wave and infrared bands. The radiation intensity of the K frequency band mainly reflects the distribution of atmospheric water vapor, and the V frequency band Radiation intensity mainly reflects the distribution characteristics of atmospheric temperature. If the atmospheric radiation intensity spectrum in the K-band and V-band can be measured in real time and accurately, the atmospheric temperature and humidity profile can be calculated in real time through further data processing. [0003] The radiometer can detect the weak thermal radiation energy of the ...

AI Technical Summary

Problems solved by technology

[0008] [2] Foreign advanced multi-channel microwave radiometer products have not disclosed specific technical details and processing methods;

[0009] [3] There is a clear gap between domestic electronic devices, materials, precision machining and processing technology compared with foreign advanced levels, so it is not possible to copy foreign design ideas, but to conduct independent research based on national conditions;

[0010] [4] The multi-channel microwave radiometer is a complex of multi-disciplinary high-tech achievements. At present, the technology at home and abroad is not perfect and mature enough, and it is still constantly exploring, improving, perfecting and innovating.

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