Experimental study of polarization influence on angles intensity

Good weather angels are echoes detected by a radar when in the searched volume of air space no real objects exist. Experimental work is presented to show how the polarization state affects the intensity of good weather angels. Experimental data have been collected from the L-band long-range Polish primary surveillance radars (PSRs) (AVIA C) by registration of plots from the extractor and by taking pictures from the PPI presentation. The best results in decreasing the intensity of angels were obtained when using circular or near-circular polarization. It is concluded from the experimental data that fixed circular polarization can be used in PSRs as the best way to minimize received weather clutter and angels