|Table of Contents|

Effects of Random Pointing Errors on Polarization Parameters of Spaceborne Conformal Array Antennas

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2012年06期
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Title:
Effects of Random Pointing Errors on Polarization Parameters of Spaceborne Conformal Array Antennas
Author(s):
LI HailinZHOU JianjiangWANG FeiXIA Weijie
College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
Keywords:
random errorsplanar array antennasconformal array antennaspolarization parameters
PACS:
TN820
DOI:
-
Abstract:
In order to analyze the effects of random pointing errors of antenna elements on array antennas,the polarization parameter errors of planar array antennas and spaceborne conformal array antennas are studied here.The definitions and formulas of polarization parameters in the far field are presented.The probability density of crosspolarization electric field strength with random pointing errors is given.The inferences of different random pointing errors on polarization parameters are analyzed by comparing the examples of planar array antennas and spaceborne conformal array antennas.The results show that with the increases of random pointing errors,the crosspolarization losses are increased and the copolarization directivity is decreased for the planar array antennas,and the changes of polarization parameters are less than 01 for the spaceborne conformal array antennas.

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Last Update: 2012-12-29