System-Level Calibration of a Transfer Radiometer Used to Validate EOS Radiance Scales

Published

January 1, 2003

Author(s)

Bettye C. Johnson, Steven W. Brown, George P. Eppeldauer, Keith R. Lykke

Abstract

A number of transfer radiometers have been developed by the National Institute of Standards and Technology (NIST) with the support and funding of the National Aeronautics and Space Administration's (NASA's) satellite sensor calibration programs. The transfer radiometers travel to NASA satellite builder and calibration facilities and validate the radiance scale of calibration sources at those facilities. One of these instruments, the Earth Observing Systems (EOS) Visible Transfer Radiometer (VXR) was calibrated for spectral responsivity in different facilities at NIST using two types of integrating sphere sources (ISSs): an incandescent lamp-illuminated ISS and a laser-illuminated ISS. We will discuss the calibration procedures using the two types of sources, compare results of calibrations of two of the VXR filter channels in the two facilities, and expound on some of the advantages offered by the new laser-based facility for irradiance and radiance responsivity calibrations.

Proceedings Title

Special issue for the 1999 Conference on Characterization and Radiometric Calibration for Remote Sensing

Volume

24 No. 2

Conference Dates

November 9-11, 1999

Conference Title

International Journal of Remote Sensing

Pub Type

Conferences

Keywords

calibration, earth observing system, filter radiometers, integrating sphere sources, laser sources, radiometric calibration, remote sensing, spectral radiance

Citation

Johnson, B. , Brown, S. , Eppeldauer, G. and Lykke, K. (2003), System-Level Calibration of a Transfer Radiometer Used to Validate EOS Radiance Scales, Special issue for the 1999 Conference on Characterization and Radiometric Calibration for Remote Sensing (Accessed October 7, 2025)