论文信息 - Development and performance of a filter radiometer monitor system for integrating sphere sources

Development and performance of a filter radiometer monitor system for integrating sphere sources

The NASA Goddard Space Flight Center (GSFC) Radiometric Calibration Laboratory (RCL) maintains several large integrating sphere sources covering the visible to the shortwave infrared wavelength range. Two critical, functional requirements of an integrating sphere source are short- and long-term operational stability and repeatability. Monitoring the source is essential in determining the origin of systemic errors, thus increasing confidence in source performance and quantifying repeatability. If monitor data falls outside the established parameters, this could be an indication that the source requires maintenance or recalibration against the National Institute of Science and Technology irradiance standard. The GSFC RCL has developed a Filter Radiometer Monitoring System (FRMS) to continuously monitor the performance of its integrating sphere calibration sources in the 400 to 2400 nm region. Sphere output change mechanisms include lamp aging, coating (e.g., BaSO4) deterioration, and ambient water vapor level. The FRMS wavelength bands are selected to quantify changes caused by these mechanisms. The FRMS design and operation are presented, as well as data from monitoring four of the RCL's integrating sphere sources.

[1] John E. Marketon,et al. Filter radiometer monitoring system for integrating sphere sources , 2001, SPIE Remote Sensing.

[2] Robert A. Barnes,et al. The use of transfer radiometers in validating the visible to shortwave infrared calibrations of radiance sources used by instruments in NASA's Earth Observing System , 2003 .

[3] Steven W. Brown,et al. Validation of radiometric standards for the laboratory calibration of reflected-solar Earth-observing satellite instruments , 2007, SPIE Optical Engineering + Applications.

[4] Steven W. Brown,et al. Radiometric measurement comparisons using transfer radiometers in support of the calibration of NASA's Earth Observing System (EOS) sensors , 1999, Remote Sensing.

[5] Mark Johnson. Photodetection and Measurement: Maximizing Performance in Optical Systems , 2003 .

[6] James B. Young,et al. Radiometric Measurement Comparison on the Integrating Sphere Source Used to Calibrate the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 Enhanced Thematic Mapper Plus (ETM+) , 2003, Journal of research of the National Institute of Standards and Technology.

[7] B. Markham,et al. Monitoring large-aperture spherical integrating sources with a portable radiometer during satellite instrument calibration , 1998 .