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Proceedings Paper

Spatial calibration of the EO-1 Advanced Land Imager
Author(s): David R. Hearn; Jeffrey A. Mendenhall; Berton C. Willard
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Paper Abstract

Spatial calibrations have been performed on the Advanced Land Imager (ALI) of the EO-1 satellite. Topics discussed in this paper include end-to-end imaging test, measurements of system modulation transfer function (MTF), and pixel lines of sight. The MTF measurements were made by recording scans of a knife-edge past the pixels. The techniques used to place the focal plane at the correct focal position are described, since they make use of MTF measurements. Line-of- sight measurements combine theodolite measurements of the telescope distortions and the photolithographic patterns of the detector arrays with images of a stationary Ronchi ruling recorded with the instrument at its normal operating conditions in a thermal vacuum chamber.

Paper Details

Date Published: 24 September 1999
PDF: 12 pages
Proc. SPIE 3750, Earth Observing Systems IV, (24 September 1999); doi: 10.1117/12.363503
Show Author Affiliations
David R. Hearn, MIT Lincoln Lab. (United States)
Jeffrey A. Mendenhall, MIT Lincoln Lab. (United States)
Berton C. Willard, MIT Lincoln Lab. (United States)


Published in SPIE Proceedings Vol. 3750:
Earth Observing Systems IV
William L. Barnes, Editor(s)

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