Enhancement of the angular resolution of radar antennas by diagram spreading

Author

Löhner, A. ; Baier, P.W. ; Thomas, R.

Author_Institution

Res. Group for RF Commun., Kaiserslautern Univ., Germany

Volume

2

fYear

1996

fDate

22-25 Sep 1996

Firstpage

882

Abstract

In monostatic radar systems, in which the same directive antenna is used for both transmission and reception, the angular resolution is limited by the restricted aperture width of the antenna. It is shown that, for a given aperture width, angular resolution can be maximized by employing linear optimum estimation (LOE). Specific aperture illuminations are proposed, by which the SNR degradation encountered when using LOE is kept low. These illuminations lead to an angular spread of the radiation pattern, which is analogous to spectrum spreading in spread spectrum communications

Keywords

antenna radiation patterns; directive antennas; filtering theory; matched filters; radar antennas; radar signal processing; receiving antennas; signal resolution; spread spectrum radar; transmitting antennas; SNR degradation; angular resolution; aperture illuminations; aperture width; diagram spreading; directive antenna; linear optimum estimation; matched filtering; monostatic radar systems; pulse compression radar; radar antennas; radiation pattern; reception; spectrum spreading; spread spectrum communications; transmission; Antenna radiation patterns; Aperture antennas; Degradation; Directive antennas; Fourier transforms; Lighting; Radar antennas; Radio frequency; Spread spectrum radar; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on

Conference_Location

Mainz

Print_ISBN

0-7803-3567-8

Type

conf

DOI

10.1109/ISSSTA.1996.563251

Filename

563251