Document Type
Thesis - University Access Only
Award Date
2003
Degree Name
Master of Science (MS)
Department / School
Electrical Engineering
Abstract
The Modulation Transfer Function (MTF) is commonly used to characterize the spatial quality of imaging systems. Previous analyses of MTF for high spatial resolution imaging satellites have been performed using only one-dimensional techniques. A new technique for onorbit MTF analysis has been developed that uses a set of convex mirrors as point sources. A two-dimensional Gaussian model was applied to the individual mirror responses to estimate the center location of each mirror. The mirror data were then aligned to a common reference grid. A two-dimensional model was applied to the resultant aligned data set to estimate the point spread function (PSF) of the imaging system. MTF and Full Width at Half Maximum (FWHM) estimates for the satellite were then derived from the estimated PSF. The MTF and FWHM measurements obtained from the twodimensional model were validated, by comparing onedimensional slices of the PSF to results obtained previously using one-dimensional methods. The results from this work demonstrate the potential applicability of this method to estimate MTF for any high spatial resolution satellite sensor data.
Library of Congress Subject Headings
Imaging systems -- Image quality.
Remote-sensing images.
Transfer functions.
Optical instruments.
Publisher
South Dakota State University
Recommended Citation
Rangaswamy, Manjunath Kempaiah, "Quickbird II Two-Dimensional On-Orbit Modulation Transfer Function Analysis Using Convex Mirror Array" (2003). Electronic Theses and Dissertations. 1040.
https://openprairie.sdstate.edu/etd2/1040
Rights Statement
