Editorial Type:
Article
Article Type:
Research Article

Correction of Dual PRF Velocity Errors for Operational Doppler Weather Radars

P. Joe Meteorological Service of Canada, Downsview, Ontario, Canada

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P. T. May Bureau of Meteorology Reseach Centre, Melbourne, Victoria, Australia

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Print Publication:
01 Apr 2003
DOI:
https://doi.org/10.1175/1520-0426(2003)20<429:CODPVE>2.0.CO;2
Page(s):
429–442
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Abstract

Dual pulse repetition frequency (PRF) is a commonly used technique, in operational Doppler weather radar networks, that extends the unambiguous Doppler velocity. The technique requires the measurement of the radial velocity at two different PRFs and it assumes that the data is collected from the same velocity. In practice, the data are collected from adjacent alternating PRF radials as the antenna rotates. However, high azimuthal shear or statistical errors due to uncertainty in the measurements can create dealiasing errors. This paper proposes two algorithms to correct these dealiasing errors and analyzes the results. Simulations and real cases are presented to illustrate the benefits and limitations.

Corresponding author address: Dr. P. Joe, Meteorological Service of Canada, 4905 Dufferin St., Downsview, ON M3H 5T4, Canada. Email: paul.joe@ec.gc.ca

Abstract

Dual pulse repetition frequency (PRF) is a commonly used technique, in operational Doppler weather radar networks, that extends the unambiguous Doppler velocity. The technique requires the measurement of the radial velocity at two different PRFs and it assumes that the data is collected from the same velocity. In practice, the data are collected from adjacent alternating PRF radials as the antenna rotates. However, high azimuthal shear or statistical errors due to uncertainty in the measurements can create dealiasing errors. This paper proposes two algorithms to correct these dealiasing errors and analyzes the results. Simulations and real cases are presented to illustrate the benefits and limitations.

Corresponding author address: Dr. P. Joe, Meteorological Service of Canada, 4905 Dufferin St., Downsview, ON M3H 5T4, Canada. Email: paul.joe@ec.gc.ca

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  • Banjanin, Z. B., and Zrnic D. S. , 1991: Clutter rejection for Doppler weather radars which use staggered pulses. IEEE Trans. Geosci. Remote Sens., GRS-29 , 610–620.

    • Search Google Scholar
    • Export Citation

  • Doviak, R. J., and Zrnic D. S. , 1993: Doppler Radar and Weather Observations. 2d ed. Academic Press, 562 pp.

  • Doviak, R. J., Sirmans D. , Zrnic D. S. , and Walker G. , 1976: Resolution of pulse-Doppler radar range and velocity ambiguities in severe storms. Preprints, 17th Conf. on Radar Meteorolgy, Seattle, WA, Amer. Meteor. Soc., 15–22.

    • Search Google Scholar
    • Export Citation

  • Frush, C., and Doviak R. J. , 2001: Performance assessment of the SZ(8/64) phase code to separate weather sigals in a research WSR-88D. Preprints, 17th Int. Conf. on Interactive Information and Processing Systems, Albuquerque, NM, Amer. Meteor. Soc., 133–136.

    • Search Google Scholar
    • Export Citation

  • Gonzales, R. C., and Woods R. E. , 1992: Digital Image Processing. Addison-Wesley, 716 pp.

  • Holleman, I., and Beekhuis J. , 2003: Analysis and correction of dual-PRF velocity data. J. Atmos. Oceanic Technol., 20 , 443–453.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Joe, P., Hudak D. , Crozier C. , Scott J. , Passarelli R. Jr., and Siggia A. , 1998: Signal processing and digitial IF on the Canadian Doppler radar network. Advanced Weather Radar Systems, COST 75 International Seminar, Locarno, Switzerland, European Commission, 544–556.

    • Search Google Scholar
    • Export Citation

  • Keenan, T., and Coauthors. 2003: The Sydney 2000 World Weather Research Programme Forecast Demonstration Project: Overview and current status. Bull. Amer. Meteor. Soc., in press.

    • Search Google Scholar
    • Export Citation

  • Lapczak, S., and Coauthors. 1999: The Canadian National Radar Project. Preprints, 29th Conf. on Radar Meteorology, Montreal, QC, Canada, Amer. Meteor. Soc., 327–330.

    • Search Google Scholar
    • Export Citation

  • Marr, D., 1982: Vision. W. H. Freeman and Co., 397 pp.

  • May, P. T., 2001: Mesocyclone and microburst signature distortion with dual-PRT radars. J. Atmos. Oceanic Technol., 18 , 1299–1233.

  • May, P. T., and Joe P. , 2001: The production of high quality Doppler velocity fields for dual-PRT weather radar. Preprints, 30th Conf. on Radar Meteorology, Munich, Germany, Amer. Meteor. Soc., 286–288.

    • Search Google Scholar
    • Export Citation

  • McInnes, K. L., and McBride J. L. , 1993: Australian southerly busters. Part I: Analysis of a numerically simulated case study. Mon. Wea. Rev., 121 , 1904–1920.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Passarelli, R., Romanik P. , Geotis S. G. , and Siggia A. D. , 1981: Ground clutter rejection in the frequency domain. Preprints, 20th Conf. on Radar Meteorology, Boston, MA, Amer. Meteor. Soc., 308–313.

    • Search Google Scholar
    • Export Citation

  • Sachidananda, M., Zrnic D. S. , Doviak R. J. , and Torres S. , 1998: Signal design and processing techniques for WSR-88D ambiguity resolution, Part 2. National Severe Storms Laboratory, Norman, OK, 105 pp.

    • Search Google Scholar
    • Export Citation

  • Sauvageot, H., 1992: Radar Meteorology. Artech House, 366 pp.

  • Seltmann, J., 2001: Quantitative effects of clutter highpass filtering as used by DWD. Preprints, 30th Conf. on Radar Meteorology, Munich, Germany, Amer. Meteor. Soc., 328–330.

    • Search Google Scholar
    • Export Citation

  • SIGMET, 1997: RVP 6 Doppler signal processor user's manual. Sigmet Inc., Westford, MA, 218 pp.

  • Sirmans, D., Zrnic D. S. , and Baumgarner W. , 1976: Extension of maximum unambiguous Doppler velocity by use of two sampling rates. Preprints, 17th Conf. on Radar Meteorolgy, Seattle, WA, Amer. Meteor. Soc., 23–28.

    • Search Google Scholar
    • Export Citation

  • Skolnik, M., 2000: Introduction to Radar Systems. 3d ed. McGraw-Hill, 784 pp.

  • Strauch, R. G., Merritt D. A. , Moran K. P. , Earnshaw K. B. , and van de Kamp D. , 1984: The Colorado wind profiling network. J. Atmos. Oceanic Technol., 1 , 37–49.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Zrnic, D. S., 1977: Spectral moment estimates from correlated pulse pairs. IEEE Trans. Aerosp. Electron. Syst., AES-13 , 344–354.

  • Zrnic, D. S., Burgess D. , and Hennington L. , 1985: Automatic detection of mesocyclonic shear with Doppler radar. J. Atmos. Oceanic Technol., 2 , 425–438.

    • Crossref
    • Search Google Scholar
    • Export Citation
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