A Superresolution Technique for Antenna Pattern Measurements

Yasutaka OGAWA  Teruaki NAKAJIMA  Hiroyoshi YAMADA  Kiyohiko ITOH  

IEICE TRANSACTIONS on Communications   Vol.E76-B   No.12   pp.1532-1537
Publication Date: 1993/12/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on 1992 Internatioal Symposium on Antennas and Propagation)
antenna pattern measurements,  MUSIC algorithm,  fast Fourier transform,  gating technique,  

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A new superresolution technique is proposed for antenna pattern measurements. Unwanted reflected signals often impinge on the antenna when we measure it outdoors. A time-domain superresolution technique (a MUSIC algorithm) has been proposed to eliminate the unwanted signal for a narrow pass-band antenna. The MUSIC algorithm needs many snapshots to obtain a correlation matrix. This is not preferable for antenna pattern measurements because it takes a long time to obtain the data. In this paper, we propose to reduce a noise component (stochastic quantity) using the FFT and gating techniques before we apply the MUSIC. The new technique needs a few snapshots and saves the measurement time.