Accession Number : AD0618205

Title :   A MULTICAMERA SOLUTION TO THE PROBLEM OF ANTENNA SURFACE DEVIATION AND SUBREFLECTOR ORIENTATION MEASUREMENTS.

Descriptive Note : Final technical rept.,

Corporate Author : ROME AIR DEVELOPMENT CENTER GRIFFISS AFB N Y

Personal Author(s) : Merchant,Dean C. ; Ballou,Charles A.

Report Date : JUN 1965

Pagination or Media Count : 47

Abstract : 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)

Descriptors :   (*RADAR ANTENNAS, CALIBRATION), PHOTOGRAMMETRY, ANTENNAS, SURFACE PROPERTIES, ANTENNA RADIATION PATTERNS, CORRELATION TECHNIQUES, LEAST SQUARES METHOD, PARABOLIC BODIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE