Design and characterization of a large area uniform radiance source for calibration of a remote sensing imaging system
| Autor: | Arun Bhardwaj, Harish Seth, Samir Pal, Greg McKee, Hari Sankar Sahoo |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Radiometer
Aperture business.industry Astrophysics::Instrumentation and Methods for Astrophysics Computer Science::Graphics Optics Integrating sphere Radiance Calibration Environmental science Radiometry business Physics::Atmospheric and Oceanic Physics Atmospheric optics Remote sensing Data reduction |
| Zdroj: | Earth Observing Systems XII. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.732122 |
| Popis: | An application-specific contracted integrating sphere source of uniform spectral radiance is described. The source is used for pre-launch test and calibration of imaging radiometers which will be used as satellite borne earth remote sensors. The calibration source is primarily intended to serve as a transfer standard of radiance. Design criteria for the uniform radiance source are presented. Included is a summary of the end-user specifications in regards to spectral radiance, radiance levels of attenuation, radiance stability, and aperture uniformity. Radiometric theory used to predict the source radiance for a specific spectral flux input is reviewed. Reasoning for the use of an integrating sphere platform for this application and characteristic features of the source are discussed. Calibration methods and instrumentation are described. The resultant data presented include the modeled data compared with the measured performance. Methods of data reduction and uncertainty are addressed where applicable. |
| Databáze: | OpenAIRE |
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