Fine spectral band microwave radiometer system with adjustable channel parameters

Abstract

The invention discloses a fine spectral band microwave radiometer system with adjustable channel parameters, and the system comprises an antenna subsystem which is used for controlling the conical scanning of an antenna, converting a received microwave signal into signals of different frequency bands, and outputting the signals; a receiver subsystem which is used for carrying out detection acquisition or frequency spectrum subdivision processing on the received signals of each frequency band and outputting remote sensing data of each channel; a comprehensive processor which is used for sendingthe remote sensing data outputted by the receiver subsystem to a satellite platform; and receiving a control instruction of the satellite platform, and completing the control of the fine spectrum microwave radiometer system with adjustable channel parameters according to the control instruction. The system has the characteristics of multiple channels, high spectral resolution and the like, and the atmospheric vertical temperature and humidity profile detection precision is remarkably improved; and channel parameters can be adjusted in time according to application requirements so that the flexibility and the adaptability are very high.

Description

technical field [0001] The invention belongs to the technical field of space microwave remote sensing, and in particular relates to a fine-band microwave radiometer system with adjustable channel parameters. Background technique [0002] The development of national economy and society has higher and higher requirements for meteorological operations, especially weather forecasting. The accuracy and refinement of weather forecasts are the focus of attention of the country and the people. Atmospheric temperature and humidity profiles are essential parameters to describe the thermal and dynamic state of the atmosphere, and provide boundary conditions for driving atmospheric dynamic models for numerical weather prediction. A more accurate atmospheric temperature and humidity profile will improve the accuracy of numerical weather prediction, which is of great significance to weather forecasting and climate change research. It is of inestimable value to my country, a country with ...

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Problems solved by technology

[0003] At present, spaceborne hyperspectral infrared sounders and microwave radiometers are important remote sensing means for detecting atmospheric temperature and humidity profiles, and are important remote sensing payloads of meteorological satellites, but both have their own shortcomings: (1) Hyperspectral infrared sounders It is easily affected by clouds and rain areas, and the detection accuracy is not high in the case of high water vapor content and cloudy liquid water, which has certain limitations; (2) Although the traditional microwave radiometer can work all-weather and all-weather, it is limited Due to the small number of channels, it has gradually been unable to meet the higher and higher requirements for atmospheric detection accuracy (especially vertical resolution), and the system structure that uses traditional analog methods to achieve intermediate frequency processing also determines that once the system channel parameters are determined, further analysis cannot be performed. Adjustment

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