Resolution Enhancement of Pulse Radar by Inversion Method

Xuefeng WU
Kiyoshi KUSAMA
Tsutomu SUZUKI

IEICE TRANSACTIONS on Communications   Vol.E76-B    No.10    pp.1279-1284
Publication Date: 1993/10/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Radar Technology)
Category: Radar Signal Processing
pulse radar,  inversion method,  resolution enhancement,  deconvolution,  Wiener filter,  

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The size and weight of marine pulse radar systems must be limited in order to mount them on board boats. However, the azimuthal resolution of a marine radar with a small antenna is degraded by the antenna beam width. It is desirable to use signal processing techniques to increase both the azimuthal resolution and the range resolution of such systems without changing their external configuration. This paper introduces a resolution enhancement method based on deconvolution, which is a kind of inversion. The frequency domain deconvolution method is described first. The effectiveness of the proposed method is shown by simulation. Then, an example of resolution enhancement processing is applied to a pulse radar. The results of practical experiments show that this method is a promising way of upgrading radars by simply processing the received signals.