24 September 1999 Spatial calibration of the EO-1 Advanced Land Imager
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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.
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David R. Hearn, David R. Hearn, Jeffrey A. Mendenhall, Jeffrey A. Mendenhall, Berton C. Willard, Berton C. Willard, } "Spatial calibration of the EO-1 Advanced Land Imager", Proc. SPIE 3750, Earth Observing Systems IV, (24 September 1999); doi: 10.1117/12.363503; https://doi.org/10.1117/12.363503
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