26 February 1982 Aperture Synthesis Of Monopulse Antenna For Radome Analysis Using Limited Measured Pattern Data
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Abstract
A planar aperture synthesis procedure which predicts measured radiation pattern data accurately and which exploits known physical parameters of the actual antenna is described for use in computer-aided radome analysis. The plane wave spectrum (PWS) representation, with the geometrical optics approximation, is used to characterize radiation from the array of four identical, discrete, conical horn elements that was studied. Solutions for the PWS of each element from measured array patterns over the visible region are presented, and a digital signal processing algorithm is described for extrapolating the aperture-limited PWS into the evanescent region as required to determine the near field of each element. The element near fields, having bounded support, are combined to produce a near field for the complete array. The array near field is used in a computer-aided radome analysis to demonstrate the accuracy to which the measured antenna patterns are predicted for the case of a free space radome. For completeness, comparisons of measured and computed patterns for a tangent ogive Rexolite (Σr = 2.54) radome are presented.
© (1982) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. K. Huddleston, J. M. Roe, "Aperture Synthesis Of Monopulse Antenna For Radome Analysis Using Limited Measured Pattern Data", Proc. SPIE 0294, New Methods for Optical, Quasi-Optical, Acoustic, and Electromagnetic Synthesis, (26 February 1982); doi: 10.1117/12.932359; https://doi.org/10.1117/12.932359
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