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Proceedings Paper

Prelaunch tests for the calibration of Total Ozone Mapping Spectrometer (TOMS) flight model 5 (FM-5)
Author(s): Hongwoo Park; F. Gary Cunningham; Jay R. Herman; Richard D. McPeters; Pawan K. Bhartia; Ulli G. Hartmann; Robert E. Haring
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Paper Abstract

TOMS has been the main satellite instrument for measuring the global distribution of the total atmospheric column of ozone since the first one was launched in 1978. The fifth instrument's launch is planned for August 2000. A key scientific objective of the TOMS mission is to monitor the trend of total global ozone, which requires the ability to detect a 1% change in ozone over a decade. This, in turn, requires high calibration accuracy and long-term stability in the TOMS ratio measurements between the solar spectral irradiance and the Earth spectral radiance. The calibration process requires not only knowledge of the radiometric response of the instrument, but also of various instrument characteristics to convert the instrument output to the value of the physical observable being measured. This is due to the fact that the object sources in measurements may have different characteristics from those of the radiometric standards, e.g., intensity, polarization, and spectral distribution; the process of calibration requires a complete set of instrument characteristics, e.g., linearity, spectral bandwidth, and straylight response, to compensate for the difference between the standards and the source being measured. This paper describes methodologies of the TOMS FM-5 prelaunch tests that are relevant to calibration.

Paper Details

Date Published: 28 December 1999
PDF: 11 pages
Proc. SPIE 3870, Sensors, Systems, and Next-Generation Satellites III, (28 December 1999); doi: 10.1117/12.373203
Show Author Affiliations
Hongwoo Park, NASA Goddard Space Flight Ctr. (United States)
F. Gary Cunningham, NASA Goddard Space Flight Ctr. (United States)
Jay R. Herman, NASA Goddard Space Flight Ctr. (United States)
Richard D. McPeters, NASA Goddard Space Flight Ctr. (United States)
Pawan K. Bhartia, NASA Goddard Space Flight Ctr. (United States)
Ulli G. Hartmann, Orbital Sciences Corp. (United States)
Robert E. Haring, Orbital Sciences Corp. (United States)

Published in SPIE Proceedings Vol. 3870:
Sensors, Systems, and Next-Generation Satellites III
Hiroyuki Fujisada; Joan B. Lurie, Editor(s)

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