New method of measuring the shape of precise antenna reflectors
作者:
J. M. Payne,
J. M. Hollis,
J. W. Findlay,
期刊:
Review of Scientific Instruments
(AIP Available online 1976)
卷期:
Volume 47,
issue 1
页码: 50-55
ISSN:0034-6748
年代: 1976
DOI:10.1063/1.1134489
出版商: AIP
数据来源: AIP
摘要:
The shape of the paraboloidal reflector surface is determined by making a large number of measurements of the reflector curvature along several radii of the surface. These measures of curvature are then integrated twice to give the reflector profile along each radius; the results from several radii then allow the reflector surface shape to be mapped in three dimensions. The curvature measurements are made by a three‐wheeled cart with a depth sensor resting on the surface at the midpoint of the wheels. Tests of the method on an 11 m diam antenna show an average repeatability of 0.037 mm in the measurement of the shape of the parabolic reflector.
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