A MULTICAMERA SOLUTION TO THE PROBLEM OF ANTENNA SURFACE DEVIATION AND SUBREFLECTOR ORIENTATION MEASUREMENTS.
Final technical rept.,
ROME AIR DEVELOPMENT CENTER GRIFFISS AFB N Y
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This report describes an improved technique for determining surface deviations of precision radar antennas. Data reduction procedures for determining antenna surface shape and subreflector orientation of a 20 meter radar antenna by means of terrestrial photogrammetry are presented. Raw data in the form of photo coordinates together with assumed camera and antenna orientations are processed in a least squares method analysis to obtain antenna surface deviations and subreflector orientation elements. Additional processed data includes space coordinates and standard errors for all points. Accuracy based on a test case is concluded to be of the order of 0.3 millimeter for a twenty meter parabolic antenna. Author