Space-borne microwave radiometer

Abstract

The invention provides a space-borne microwave radiometer, which comprises feed sources, calibration bodies, a motor, microwave reception antennas, a scanning drive control module, high-speed digital acquisition systems and microwave receivers. The motor is controlled by the scanning drive control module to drive the microwave reception antennas to rotate; the high-speed digital acquisition systems are connected with the microwave receivers, the scanning drive control module and an upper computer; and the high-speed digital acquisition systems are communicated with the upper computer, realize refining of spectrum resolution of analog signals output by the microwave receivers, then, carry out digital acquisition and quantitative processing through a multichannel mode, output the obtained digital signals to the upper computer and controls operation of the scanning drive control module. The ultra-broadband ultra-multichannel microwave radiometer is provided based on the basic theory of an existing conventional microwave radiometer, realizes fine spectrum microwave radiometer measurement, improves vertical resolution of atmospheric parameter detection and prevents defects of conventional microwave radiation detection.

Description

technical field [0001] The invention relates to the field of microwave radiometers, in particular to a spaceborne microwave radiometer. Background technique [0002] Atmospheric temperature and humidity profiles are important meteorological parameters. At present, detection methods commonly used in meteorological operational applications include: radiosondes, on-site measurements by sounding balloons, ground-based microwave radiometers, and microwave radiometers for polar-orbiting meteorological satellites. [0003] However, the above-mentioned detection methods each have the following different defects: due to the radiosonde's bulky size, high cost, complex installation and operation conditions, and high-power radio radiation, it cannot be installed and operated in the population. Dense areas, and their spatial and temporal resolutions are low; balloon on-site detection technology can only perform limited discrete-time measurements, and the cost of long-term detection is hi...

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned detection methods each have the following different defects: due to the radiosonde's bulky size, high cost, complex installation and operation conditions, and high-power radio radiation, it cannot be installed and operated in the population. Dense areas, and their spatial and temporal resolutions are low; balloon on-site detection technology can only perform limited discrete-time measurements, and the cost of long-term detection is high. Generally, only 1 or 2 measurement data can be obtained per day, and Its cast is limited by weather conditions

However, the above-mentioned developed microwave radiometers have low frequency, narrow bandwidth, and low spectral resolution, resulting in low measurement accuracy for atmospheric temperature and humidity.

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