HySIS卫星通过全流程校准与处理，实现30米分辨率高光谱成像。
Advancements in Data Processing and Calibration for the Hyperspectral Imaging Satellite (HySIS)
- 全链条校准确保传感器在轨数据准确
- 在轨辐射与几何校准验证精度达30米
- 适合遥感、环境监测等科研与应用人员
高光谱成像技术是地球探测的强大工具，可实现对光谱特征的精细分析。印度发射了一颗专用高光谱地球观测卫星，能够覆盖400至2500纳米的宽电磁波谱，具备30米的空间分辨率。本文详述了发射前为确保数据准确性与仪器优化所实施的全面校准流程。性能指标表明该卫星可提供高质量的地表影像。在轨辐射与几何校准进一步验证了其功能，期间观测到的现象与异常促使开发了专用算法以提升运行效果。论文还概述了从原始数据获取到最终图像生成的操作化数据处理流程。对卫星辐射与几何质量的全面评估强化了其可靠性与有效性，凸显其在推进高光谱成像技术用于地球探索方面的贡献。
原文摘要 · Abstract (English)
Hyperspectral imaging is a powerful tool for Earth exploration, allowing for detailed analysis of spectral features. India has launched a dedicated hyperspectral Earth observation satellite capable of capturing data across a wide electromagnetic spectrum from 400 nm to 2500 nm, with an impressive spatial resolution of 30 meters. This paper details the comprehensive calibration procedures performed before launch to ensure data accuracy and instrument optimization for Hysis payload. Performance metrics demonstrate the satellite's ability to deliver high-quality imagery of the Earth's surface. In-orbit radiometric and geometric calibration further validated the satellite's functionality, while observations and anomalies encountered during this phase led to the development of specialized algorithms for operational enhancement. The paper outlines the operational data processing pipeline, covering stages from raw data acquisition to final image generation. A thorough assessment of the satellite's radiometric and geometric quality reinforces its reliability and effectiveness, highlighting its contribution to advancing Earth exploration through hyperspectral imaging technology.
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