Interference Signal Suppression by Polarization Filters under Estimate Error

For the polarization estimate operation of polarization filter, the polarization filter performance is fully analyzed from antenna polarization property, channel amplitude and phase error, channel noise effect and polarization estimate algorithm in four aspects. The validity of polarization filtering is proved under polarization estimate error condition. The study indicated that, adding polarization filter process in radar sensor to cancel interference and evaluate the performances, optimizing the output of polarization channel and processing method is the key point. The polarization estimate precisions will not directly constraint the performance of polarization filtering. The conclusion will be significant to help single polarized radar improving the polarization measurement and anti-interference ability.