A method for quality control of ground-based microwave radiometer mobile observation data

By implementing multi-level quality control on the mobile observation data of the ground-based microwave radiometer, including checking for the effects of obstruction, correcting the antenna pointing direction, and eliminating the effects of precipitation, the problem of data anomalies in the existing technology has been solved, and high-quality multi-channel brightness temperature and atmospheric profile data have been acquired.

CN121633127BActive Publication Date: 2026-07-10CHINESE ACAD OF METEOROLOGICAL SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINESE ACAD OF METEOROLOGICAL SCI
Filing Date
2025-12-02
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing quality control technologies lack methods for mobile observation scenarios using ground-based microwave radiometers, leading to data anomalies and an inability to acquire high-quality, high-spatial-density multi-channel brightness temperature and atmospheric vertical profile dynamic detection data.

Method used

A multi-level quality control method is adopted, including obstacle obstruction impact inspection, antenna pointing correction, precipitation impact anomaly data removal, outlier detection, time consistency inspection, and vehicle speed impact inspection. Combined with inertial navigation/GPS/vehicle speed information and automatic weather station data, a real-time QC marking system is formed.

Benefits of technology

Through rigorous quality control and the elimination of abnormal data, a high-quality, high-spatial-density multi-channel brightness temperature, temperature and humidity, and water vapor density profile dynamic detection dataset was obtained, thereby improving the integrity and accuracy of the data.

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Abstract

The application discloses a kind of ground-based microwave radiometer mobile observation data quality control method, the present application is based on the threshold of accumulated precipitation, accurately remove the abnormal observation period affected by precipitation, utilize three-step quality control method and gradient method, check and identify singular value, time consistency and barrier shelter;Through the relationship between analysis platform speed and radiometer spatial resolution, beam overlap degree, assess the influence of vehicle speed on observation representative, and determine the critical speed;Using the attitude angle data measured synchronously by inertial navigation system, the antenna pointing deviation is geometrically corrected, and the original brightness temperature data is accurately corrected.The present application realizes the efficient quality control of multi-channel brightness temperature and atmospheric profile data, obtains high-quality, high-spatial and temporal density multi-channel brightness temperature and atmospheric vertical profile dynamic detection data set, and systematically solves the data quality problems caused by various interference factors in the mobile observation process.
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Citation Information

Patent Citations

  • Data processing and controlling apparatus used for ground-based microwave radiometer

    CN104181507A

  • Radio frequency interference detection and correction method for low-frequency channel of satellite-borne microwave sensor

    CN109406911A