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Improved Micro Rain Radar Rainfall Measurements using Doppler Spectra Post-Processing *

The Micro Rain Radar 2 (MRR) is a cost effective, minimum maintenance oriented, portable radar system used for conducting precipitation research. This system is prone to several draw backs such as lack of a sophisticated post-processing algorithm to improve its sensitivity, noise due to radar receiver and the lack of high quality Doppler radar moments. In this project work, we propose an improved processing method which is especially suited for rainfall observations and provides reliable values of effective reflectivity, Doppler velocity and spectral width. The proposed method is a noise removal based on recognition of the most significant peak. A dynamic dealiasing routine allows observations even if the Nyquist velocity range is exceeded. The proposed method exploits the full potential of MRR’s hardware and substantially enhances the use of Micro Rain Radar for studies of precipitation.