Modeling of Cross Polarization Tracking Errors of Radome-Enclosed Monopulse Systems


  1. Foo, S.
  2. Aloisius, L.
  3. Kashyap, S.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
A cross-polarized signal transmitted by a jammer passes through a protective radome before reaching the aperture of a missile antenna. As a result, the actual co-polar and cross-polar tracking response of the monopulse system changes and varies with the relative antenna pointing angle. This study describes a systematic EM procedure for the prediction of the copolar and cross-polar radiation patterns of radome-enclosed antennas. Both the measured and predicted results show that the presence of a radome significantly affects the susceptibility of a monopulse tracking system to the cross-polar jamming. In fact, the effectiveness of the cross-polar jamming depends on various factors such as the incidence angle, polarization angle, the shape and material of the radome, and the type of the antenna. Results of this study show that the cross-polar jamming in general does not have 100% of coverage angles. It is effective only in certain incidence angles and when the polarization angle is less than 30 deg. For some incidence angles, cross-polar jamming is deemed to be ineffective.

Il y a un résumé en français ici.

Monopulse antenna;Cross polarization;Tracking error
Report Number
DRDC-OTTAWA-TR-2003-153 — Technical Report
Date of publication
01 Mar 2003
Number of Pages
Hardcopy;CD ROM

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