New Weather Radar Techniques: Ready for Operational Use?
Relevant new weather radar techniques are reviewed with respect to their operation principles, expected benefits and acceptance for use in operational networks.
Dual-frequency and frequency-agile radars are found to be of little value for routine operation, and therefore might remain restricted to special applications, probably in the research domain.
Doppler weather radars are available off-the-shelf from all major manufacturers, and can already be found in several operational networks. Their value lies in the suppression of ground clutter and the measurement of precipitation particle velocities.
The improvement of precipitation intensity estimates and the liquid/solid-phase discrimination are benefits brought in by polarisation diversity radars. With today’s technology to be implemented without problems, these radars are just on the way to leave the researchdomain and to become accepted for routine operation.
The typical weather radar for installation during the 90ies should be a combination of Doppler and polarisation diversity. Other advanced systems, like electronically steered (multibeam) antennas, are expected as last step forward at the end of the next decade.
KeywordsRainfall Rate Doppler Radar Weather Radar Doppler Weather Radar Ground Clutter
Unable to display preview. Download preview PDF.
- Attmannspacher, W., und J. Riedl, 1977: Gleichzeitige Flächenniederschlagsmessungen mit einem X- und einem C-Band Radargerät. Kleinheubacher Berichte, Bd. 20, pp. 371–378.Google Scholar
- Austin, P.M., and M.R. Schaffner, 1970: Computations and experiments relevant to digital processing of weather radar echoes. Proc. 14th Radar Meteorol. Conf., Tucson, Ariz.Google Scholar
- Bringi, V.N. and A. Hendry, 1987: Technology of Polarisation diversity radars for meteorology. Battan Memorial and 40th Anniversary Conference on Radar Meteorology; AMS, Boston.Google Scholar
- Carbone, R.E., 1972: Evaluation of a dual-wavelength hail detector. Proc. 15th Conference on Radar Meteorology, pp. 7–12, AMS, Boston.Google Scholar
- Cherry, S.M., 1978: Dual frequency radars - use for attenuation measurements and solid-liquid phase determination. Proc. Radar Workshop Graz, Austria, Nov. 1978.Google Scholar
- Cherry, S.M., J.W.F. Goddard and M.P.M. Hall, 1981: Use of dualpolarisation radar data for evaluation of attenuation on a satellite-to-earth path. Annales des Telecommunications, Vol. 36, No. 1,Google Scholar
- Doviak, R.J., et al., 1982: Pre-storm boundary layer observations with Doppler radar. Preprints 20th Radar Meteorology Conference, AMS, Boston, pp. 546–553.Google Scholar
- Lhermitte, R.M., and D. Atlas, 1961: Precipitation motion by pulse Doppler radar. Proc. 9th Weather Radar Conference, AMS. Boston, pp. 218–223.Google Scholar
- Mc. Cormick, G.C., and A. Hendry, 1972: Results of precipitation backscatter measurements at 1.8 cm with a polarization diversity radar. Proc. 15th Radar Met. Conf., Champaign Urbana, pp. 35–38.Google Scholar
- Ochs, A., und F. Ruecker, 1977: Streuquerschnitte von Niederschlägen bei 11, 5 GHz, gemessen mit einem bistatischen Radar. Kleinheubacher Berichte, 20, pp. 401–414.Google Scholar
- Randeu, W.L., 1986: Über die Entwicklung und den Bau eines mehrparametrigen frequenzagilen Wetterradars im Rahmen der Erforschung von Ausbreitungsstörungen auf Satellitenfunkstrecken. Habilitationsschrift, Technische Universität Graz, Nov. 1986.Google Scholar
- Randeu, W.L., 1988: COST-73: Review of New Radar Techniques (Dual-frequency, polarisation-diversity and frequency-agile weather radars). EUCO-COST 73/37/88, Nov. 1988.Google Scholar
- Randeu, W.L., W. Riedler, E. Kubista and F. Stampfl, 1988: The behaviour of ground clutter echoes obtained with a frequency- agile C-band weather radar. Presentation at ISRP’88, Chinese Institute of Electronics, Beijing, April 18–21, 1988.Google Scholar
- Riedler, W., and W.L. Randeu, 1982: A frequency-agile, dually-polarised C-band weather radar assisting microwave propagation experiments. Paper presented at URSI/IEE Conf. on Multiple Parameter Radar Measurements of Precipitation, Bournemouth, UK.Google Scholar
- Rossettini, A., G. Vezzani and R.W. Lee, 1989: GPM-500C: A new Italien dual-polarization Doppler weather radar. Proc. 24th Conf. Radar Meteorology, AMS, Boston, pp. 375–379.Google Scholar
- Schroth, A., P.F. Meischner and H. Schuster, 1984: Coherent Polarimetric C-band radar for atmospheric research. Proceedings of IGARSS ’84 Symposium, Strasbourg, August 27–30, pp. 497–505.Google Scholar