The Jurassicprok Interferometric Calibration Software (also called “Calibration Processor” or simply “CP”) estimates the calibration parameters of an airborne synthetic- aperture-radar (SAR) system, the raw measurement data of which are processed by the Jurassicprok software described in the preceding article. Calibration parameters estimated by CP include time delays, baseline offsets, phase screens, and radiometric offsets. CP examines raw radar-pulse data, single-look complex image data, and digital elevation map data. For each type of data, CP compares the actual values with values expected on the basis of ground-truth data. CP then converts the differences between the actual and expected values into updates for the calibration parameters in an interferometric calibration file (ICF) and a radiometric calibration file (RCF) for the particular SAR system. The updated ICF and RCF are used as inputs to both Jurassicprok and to the companion Motion Measurement Processor software (described in the following article) for use in generating calibrated digital elevation maps.

This program was written by Elaine Chapin, Scott Hensley, and Paul Siqueira of Caltech for NASA’s Jet Propulsion Laboratory.

This software is available for commercial licensing. Please contact Don Hart of the California Institute of Technology at (818) 393- 3425. Refer to NPO-40015.

This Brief includes a Technical Support Package (TSP).
Calibration Software for Use With Jurassicprok

(reference NPO40015) is currently available for download from the TSP library.

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NASA Tech Briefs Magazine

This article first appeared in the July, 2004 issue of NASA Tech Briefs Magazine.

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