Clutter mitigation for wind profiler radar using adaptive clutter suppression and median filtering for Doppler spectra

Abstract

A practical method to mitigate severe clutter in signals received by wind profiler radar is proposed. It uses adaptive clutter suppression (ACS) for collected time series and the median filter for Doppler spectra consecutive in time. When the source of a clutter exists in or near the antenna main lobe, ACS cannot always mitigate the clutter sufficiently. The median filter for the Doppler spectra can reject the remnant of such severe clutter when its appearance in Doppler spectra is limited in time. Using a 1.3-GHz wind profiler radar, an experimental result for a severe clutter is shown.