Infrared payload cross-calibration method and related devices
By using DCC and the ocean as reference targets and combining hyperspectral data, the nonlinearity problem of infrared payloads in the low-temperature range was solved, achieving efficient calibration of infrared payloads and improving the accuracy and applicability of calibration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AEROSPACE INFORMATION RES INST CAS
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing infrared payloads suffer from large nonlinear errors and insufficient reference targets when calibrating in the low-temperature range, making it difficult to effectively cover common low-temperature scenarios.
Using DCC as the low-temperature reference target and the ocean as the normal-temperature reference target, a cross-calibration method is constructed by combining hyperspectral thermal infrared data and temperature-emissivity separation method. By screening, matching and correcting image data, the spectral matching factor is calculated and the calibration coefficient is determined.
It effectively reduces the nonlinear error of calibration relationship in the low temperature range, improves the reliability and applicability of calibration results in different scenarios, and establishes a cross-calibration system that takes into account both the low temperature end and the normal temperature end.
Smart Images
Figure CN122408975A_ABST