Calibration monitoring of the visible and near-infrared channels of the Along-Track Scanning Radiometer-2 by use of stable terrestrial sites
| Autor: | C. R. Nagaraja Rao, Chris T. Mutlow, Dave L. Smith |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Radiometer
business.industry Materials Science (miscellaneous) Near-infrared spectroscopy Diffuse sky radiation Image processing Signal Industrial and Manufacturing Engineering Optics Calibration Radiometry Environmental science Business and International Management business Optical depth Remote sensing |
| Zdroj: | Applied Optics. 41:515 |
| ISSN: | 1539-4522 0003-6935 |
| Popis: | The Along-Track Scanning Radiometer-2 (ATSR-2) is equipped with visible and near-infrared channels at 1.6, 0.87, 0.66, and 0.56 microm. An in-flight visible calibration (VISCAL) system used to convert the raw signal to top-of-the-atmosphere reflectances is described. To monitor the long-term stability of the VISCAL, a number of large-area stable terrestrial sites have been employed. We describe the methods used to determine the long-term drifts in the ATSR-2 onboard calibration device and evaluate the suitability of the sites for calibration monitoring. |
| Databáze: | OpenAIRE |
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