Sidelobe Contamination in Bistatic Radars

Ramón de Elía Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada

Search for other papers by Ramón de Elía in
Current site
Google Scholar
PubMed
Close
and
Isztar Zawadzki Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada

Search for other papers by Isztar Zawadzki in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

The problem of sidelobe contamination in a bistatic network is explored. The McGill bistatic network consists of one S-band Doppler radar and two low-gain passive receivers at remote sites. Operational experience with the bistatic network indicated many cases in which sidelobe contamination seemed nonnegligible. To confirm these findings a sidelobe simulation model was constructed. Comparison between simulations and actual data showed a good reproduction of the observed effect, with differences explained by uncertainties in both transmitter and receiver antenna patterns. It is also shown that this effect may have damaging consequences in Doppler fields in both convective and stratiform precipitation events. An index of contamination is introduced to detect areas of low-quality data.

Corresponding author address: Ramón de Elía, Department of Atmospheric and Oceanic Sciences, McGill University, 805 Sherbrooke W., Montreal, PQ H3A 2K6, Canada.

Email: relia@zephyr.meteo.mcgill.ca

Abstract

The problem of sidelobe contamination in a bistatic network is explored. The McGill bistatic network consists of one S-band Doppler radar and two low-gain passive receivers at remote sites. Operational experience with the bistatic network indicated many cases in which sidelobe contamination seemed nonnegligible. To confirm these findings a sidelobe simulation model was constructed. Comparison between simulations and actual data showed a good reproduction of the observed effect, with differences explained by uncertainties in both transmitter and receiver antenna patterns. It is also shown that this effect may have damaging consequences in Doppler fields in both convective and stratiform precipitation events. An index of contamination is introduced to detect areas of low-quality data.

Corresponding author address: Ramón de Elía, Department of Atmospheric and Oceanic Sciences, McGill University, 805 Sherbrooke W., Montreal, PQ H3A 2K6, Canada.

Email: relia@zephyr.meteo.mcgill.ca

Save
  • Atlas, D., K. Naito, and R. E. Carbone, 1968: Bistatic microwave probing of a refractively perturbed clear atmosphere. J. Atmos. Sci.,25, 257–268.

    • Crossref
    • Export Citation
  • Awaka, J., and T. Oguchi, 1982: Bistatic radar reflectivities of Prupacher-and-Pitter from raindrops at 34.8 GHz. Radio Sci.,17, 269–278.

  • Aydin, K., S. H. Park, and T. M. Walsh, 1998: Bistatic dual-polarization scattering from rain and hail at S- and C-band frequencies. J. Atmos. Oceanic Technol.,15, 1110–1121.

    • Crossref
    • Export Citation
  • Crane, R. K., 1974: Bistatic scatter from rain. IEEE Trans. Antennas Propag.,22, 769–779.

    • Crossref
    • Export Citation
  • Dibbern, J., 1987: Dependence of radar parameters on polarization properties of rain for bistatic CW radar. Radio Sci.,22, 769–779.

    • Crossref
    • Export Citation
  • Doviak, R. J., and C. M. Weil, 1972: Bistatic radar detection of the melting layer. J. Appl. Meteor.,11, 1012–1016.

  • ——, and D. S. Zrnić, 1993: Doppler Radar and Weather Observations. Academic Press, 562 pp.

  • Glaser, J. I., 1986: Fifty years of bistatic and multistatic radar. Proc. IEEE, Commun. Radar Signal Process.,133, 596–603.

    • Crossref
    • Export Citation
  • Protat, A., and I. Zawadzki, 1999: A variational method for real-time retrieval of three-dimensional wind field from multiple-Doppler bistatic radar network data. J. Atmos. Oceanic Technol.,16, 432–449.

    • Crossref
    • Export Citation
  • Rinehart, R. E., and J. D. Tuttle, 1981: A technique for determining antenna beam patterns using a ground target. Preprints, 20th Conf. on Radar Meteorology, Boston, MA, Amer. Meteor. Soc., 672–675.

  • Sachinadanda, M., R. J. Doviak, and D. S. Zrnić, 1984: Whitening of sidelobe powers by pattern switching in radar array antenna. Preprints, 22d Conf. on Radar Meteorolology, Zurich, Switzerland, Amer. Meteor. Soc., 296–300.

  • Shupyatsky, A. B., 1974: Echo depolarization as measured with bistatic radar. J. Rech. Atmos.,8, 201–204.

  • Wurman, J., 1994: Vector winds from a single-transmitter bistatic dual-Doppler radar network. Bull. Amer. Meteor. Soc.,75, 983–994.

    • Crossref
    • Export Citation
  • ——, S. Heckman, and D. Boccippio, 1993: A bistatic multiple-Doppler network. J. Appl. Meteor.,32, 1802–1814.

    • Crossref
    • Export Citation
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 395 88 7
PDF Downloads 215 24 1