Method for evaluating and analyzing calibration performance of stationary satellite hyperspectral infrared detector

Through the method of combining multi-source data, combined with ERA5 data and polar orbit satellite observation data, the calibration performance evaluation of the stationary satellite hyperspectral infrared detector is solved, and the systematic error problem introduced by relying on a single atmospheric radiation model in the existing technology is solved, and higher calibration performance and data quality are achieved.

CN119714564AActive Publication Date: 2025-03-28SUN YAT SEN UNIV
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Patent Information

Application Number
CN202411737587.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-03-28
Estimated Expiration
2044-11-29

AI Technical Summary

Technical Problem

In the calibration performance evaluation of stationary satellite hyperspectral infrared detectors, the prior art relies on a single atmospheric radiation model to easily introduce systematic errors and ignore the high temporal resolution characteristics of the instrument, resulting in poor data quality and application effects.

Method used

Using a multi-source data combination method, by obtaining L1-level observation data of the ERA5 data set and the stationary satellite hyperspectral infrared detector, inputting it to the rapid transmission radiation model for simulation, and combining the observation data of the polar-orbit satellite infrared atmospheric detection interferometer for cross-match verification, significantly improving the accuracy and reliability of the daily changing characteristics of the radiation calibration performance alternative calibration technology.

Benefits of technology

It significantly improves the accuracy and reliability of radiation calibration performance, avoids the error introduced by a single atmospheric radiation model, makes full use of the high-time resolution characteristics of stationary satellite infrared hyperspectral instruments, and improves the quality and application effect of detection data.

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Abstract

The invention discloses a calibration performance evaluation and analysis method for a stationary satellite hyperspectral infrared detector, and the method comprises the steps: firstly obtaining an ERA5 data set and L1-level observation data of the stationary satellite hyperspectral infrared detector, and inputting the data into a rapid transmission radiation model to obtain simulated radiation data; then comparing the simulated radiation data with L1-level observation data of a stationary satellite hyperspectral infrared detector, calculating systematic deviation and carrying out deviation analysis; and finally, performing cross matching verification on L1-level observation data of the stationary satellite hyperspectral infrared detector and observation data of the polar orbit satellite infrared atmospheric detection interferometer. On the basis of an atmospheric radiation model, more accurate and reliable calibration performance daily variation characteristics are provided to replace a calibration technology by using latest high-quality data and combining multi-source reference data, so that the defects of the prior art are effectively overcome, and the quality and the application effect of detection data are remarkably improved.
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