Doppler polarisation spectral resolution of radar signals

This letter presents some results on dual-channel Doppler spectral analysis of radar signals received by two circularly and orthogonally polarised radar channels. These results were produced from an analysis of experimental data obtained, in the presence of both aircraft target and clutter, by an S-band ATC radar suitably modified for dual polarisation reception. The results illustrate that dual channel processing can improve the target resolution with respect to the single-channel processing, when using maximum entropy spectral estimation methods.