Ground-based multi-channel microwave radiation meter based on meteorological detection

Abstract

The invention provides a ground-based multi-channel microwave radiation meter based on meteorological detection, comprising a motor, a calibration unit, a power supply unit, antenna and feeding units, receiver units, and a data acquisition and system control unit. The antenna and feeding units are used for receiving microwave radiation signals from the atmosphere and a calibration object, and adopt a dual-frequency independent reflecting surface. The receiver units are used for sequentially performing down conversion, amplification, filtering, detection, integration and low-frequency amplification on the microwave radiation signals received by the antenna and feeding units to generate detection data, and the receiver units adopt receivers of a super-heterodyne local oscillator frequency-hopping system. With the microwave radiation meter, a vertical profile from the earth surface to a 10-km-high atmospheric layer can be measured, high-resolution temperature, relative humidity and water vapor profiles can be provided, and uninterrupted observation can be realized to provide whole-process data of weather process evolution.

Description

technical field [0001] The invention relates to the field of microwave radiometers in meteorological detection, in particular to a ground-based multi-channel microwave radiometer based on meteorological detection. Background technique [0002] Atmospheric temperature and humidity profiles, as important meteorological parameters, are currently mainly detected by two methods: one is to use radiosondes (radars) on the ground to measure, which is characterized by large volume, high cost and complex Installation and operating conditions, and the spatial resolution and time resolution are low; the other is the use of satellite remote sensing means in high space orbit, which is characterized by high spatial resolution and wide detection coverage, especially over the ocean and Inaccessible land areas; however, due to the limitation of observation geometry, satellite remote sensing has high vertical resolution for high altitudes, but poor vertical resolution for low altitudes, especi...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem that the above-mentioned microwave radiometer uses dual-frequency shared reflection to cause low system sensitivity and precision, and adopts dual-frequency independent reflection to cause complex system structure. The present invention provides a ground-based multi-channel microwave radiometer. , the ground-based microwave radiometer has the characteristics of strong portability, high performance and low power consumption

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