NASA NTRS · 19840048954
A rapid method for obtaining frequency-response functions for multiple input photogrammetric data
Abstract
A two-digital-camera photogrammetric technique for measuring the motion of a vibrating spacecraft structure or wing surface and an applicable data-reduction algorithm are presented. The 3D frequency-response functions are obtained by coordinate transformation from averaged cross and autopower spectra derived from the 4D camera coordinates by Fourier transformation. Error sources are investigated analytically, and sample results are shown in graphs.
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Kroen, M. L., Tripp, J. S.. 1984-01-01. A rapid method for obtaining frequency-response functions for multiple input photogrammetric data. https://ntrs.nasa.gov/citations/19840048954
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