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Geosynchronous orbit-based Earth radiation measurement system
Optics Express
|August 13, 2025
Summary
This study introduces novel Earth radiation measurement systems for geosynchronous orbit, utilizing segmented aperture technology. These systems enable precise analysis of radiative forcing factors impacting Earth's energy budget.
Area of Science:
- Earth Science
- Remote Sensing
- Astrophysics
Background:
- Accurate Earth radiation measurements are crucial for understanding climate dynamics.
- Geosynchronous orbit offers continuous monitoring capabilities.
- Existing systems may have limitations in spectral and spatial resolution.
Purpose of the Study:
- To design and develop advanced Earth radiation measurement systems for geosynchronous orbit.
- To enhance the analysis of radiative characteristics and forcing factors.
- To improve the identification of surface and atmospheric scene types.
Main Methods:
- Development of a four-channel radiometer using Cassegrain telescope and segmented aperture technology.
- Integration of a nine-channel multispectral camera with Si and InGaAs detectors.
- Deployment in geosynchronous orbit for simultaneous full-disk observations.
Main Results:
- Simultaneous measurement of four Earth radiation bands (0.3–50µm) with 20 km spatial resolution.
- Acquisition of nine spectral bands (0.44–2µm) for visible and infrared imaging.
- Accurate identification of surface and atmospheric scene types.
Conclusions:
- The designed system provides comprehensive Earth radiation data from geosynchronous orbit.
- Enables in-depth analysis of radiative characteristics and scene types.
- Facilitates more precise evaluation of radiative forcing impacts on Earth's energy budget.
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