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  • Bayliss, E. T., 1968: Design of monopulse antenna difference patterns with low sidelobes. Bell Syst. Tech. J., 47 , 623–650.

  • Cohn, S. A., Brown W. O. J. , Martin C. L. , Susedik M. S. , Maclean G. , and Parsons D. B. , 2001: Clear air boundary layer spaced antenna wind measurement with the Multiple Antenna Profiler (MAPR). Ann. Geophys., 19 , 845–854.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Curtis, C., 2007: NWRT-Antenna pattern measurements. NSSL Report, 10 pp.

  • Doviak, R. J., and Zhang G. , 2006: Crossbeam wind measurements with phased array Doppler weather radar. Proc. Fourth European Conf. on Radar in Meteorology and Hydrology, Barcelona, Spain, ERAD.

    • Search Google Scholar
    • Export Citation

  • Doviak, R. J., and Zrnić D. S. , 2006: Doppler Radar and Weather Observations. Dover Publications, 562 pp.

  • Doviak, R. J., Lataitis R. J. , and Holloway C. L. , 1996: Cross correlation and cross spectra for spaced antenna wind profilers: 1. Theoretical analysis. Radio Sci., 31 , 157–180.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Doviak, R. J., Zhang G. , Cohn S. A. , and Brown W. O. J. , 2004: Comparison of spaced-antenna baseline wind estimators: Theoretical and simulated results. Radio Sci., 39 .RS1006, doi:10.1029/2003RS002931.

    • Search Google Scholar
    • Export Citation

  • Heinselman, P., Priegnitz D. , Manross K. , and Adams R. , 2007: Comparison of storm evolution characteristics: The NWRT PAR and WSR-88D. Preprints, 33rd Conf. on Radar Meteorology, Cairns, Australia, Amer. Meteor. Soc., 5.4. [Available online at http://ams.confex.com/ams/pdfpapers/123060.pdf.].

  • Holloway, C. L., Doviak R. J. , Cohn S. A. , Lataitis R. J. , and Van Baelen J. S. , 1997: Cross correlations and cross spectra for spaced antenna wind profilers 2. Algorithms to estimate wind and turbulence. Radio Sci., 32 , 967–982.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Palmer, R. D., Larsen M. F. , Woodman R. F. , Fukao S. , Yamamoto M. , Tsuda T. , and Kato S. , 1991: VHF radar interferometry measurements of vertical velocity and the effect of tilted refractivity surfaces on standard Doppler measurements. Radio Sci., 26 , 417–427.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Palmer, R. D., Larsen M. F. , Fukao S. , and Yamamoto M. , 1998: On the relationship between aspect sensitivity and spatial interferometric in-beam incidence angles. J. Atmos. Sol. Terr. Phys., 60 , 37–48.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Pfister, W., 1971: The wave-like nature of inhomogenetics in the E-Region. J. Atmos. Terr. Phys., 33 , 999–1025.

  • Ryzhkov, A. V., 2007: The impact of beam broadening on the quality of radar polarimetric data. J. Atmos. Oceanic Technol., 24 , 729–744.

  • Sherman, S. M., 1988: Monopulse principles and techniques. Aspects of Modern Radar, E. Brookner, Ed., Artech House, 297–335.

  • Simmons, K. M., and Sutter D. , 2005: WSR-88D radar, tornado warning, and tornado casualties. Wea. Forecasting, 20 , 301–310.

  • Taylor, T. T., 1960: Design of circular apertures for narrow beamwidth and low sidelobes. IEEE Trans. Antennas Propag., 8 , 17–22.

  • Yeary, M., McGuire B. , Forsyth D. , Benner W. , and Torok G. , 2007: Target tracking at the national weather radar testbed: A progress report on detecting and tracking aircraft. Preprints, 23rd Conf. on Interactive Information Processing Systems, San Antonio, TX, Amer. Meteor. Soc., 8A.1. [Available online at http://ams.confex.com/ams/pdfpapers/119151.pdf.].

  • Yu, T-Y., Zhang G. , Chalamalasetti A. B. , Doviak R. J. , and Zrnić D. , 2006: Resolution enhancement technique using range oversampling. J. Atmos. Oceanic Technol., 23 , 228–240.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Yu, T-Y., Orscanin M. B. , Curtis C. D. , Zrnić D. S. , and Forsyth D. E. , 2007: Beam multiplexing using the phased-array weather radar. J. Atmos. Oceanic Technol., 24 , 616–626.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Zhang, G., 1998: Detection and imaging of targets in the presence of clutter based on angular correlation function. Ph.D. dissertation, University of Washington, 107 pp.

  • Zhang, G., and Doviak R. J. , 2007: Spaced-antenna interferometry to measure crossbeam wind, shear, and turbulence: Theory and formulation. J. Atmos. Oceanic Technol., 24 , 791–805.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Zhang, G., Vivekanandan J. , and Brandes E. , 2002: Effects of random inhomogeneity on radar measurements and rain rate estimation. IEEE Trans. Geosci. Remote Sens., 40 , 223–227.

    • Crossref
    • Search Google Scholar
    • Export Citation

  • Zhang, G., Doviak R. J. , Vivekanandan J. , Brown W. O. J. , and Cohn S. A. , 2003: Cross-correlation ratio method to estimate cross-beam wind and comparison with the full correlation analysis. Radio Sci., 38 .8052, doi:10.1029/2002RS002682.

    • Search Google Scholar
    • Export Citation

  • Zhang, G., Doviak R. J. , Vivekanandan J. , Brown W. O. J. , and Cohn S. A. , 2004: Performance of correlation estimates for spaced antenna wind measurements in the presence of noise. Radio Sci., 39 .3017, doi:10.1029/2003RS003022.

    • Search Google Scholar
    • Export Citation

  • Zhang, G., Yu T. , and Doviak R. J. , 2005: Angular and range interferometry to refine weather radar resolution. Radio Sci., 40 .RS3013, doi:10.1029/2004RS003125.

    • Search Google Scholar
    • Export Citation

  • Zrnić, D. S., and Doviak R. J. , 1975: Velocity spectra of vortices scanned with a pulse-Doppler radar. J. Appl. Meteor., 14 , 1531–1539.

    • Crossref
    • Search Google Scholar
    • Export Citation
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Article Type:
Research Article

Spaced-Antenna Interferometry to Detect and Locate Subvolume Inhomogeneities of Reflectivity: An Analogy with Monopulse Radar

Guifu ZhangSchool of Meteorology and Atmospheric Radar Center, University of Oklahoma, Norman, Oklahoma

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Richard J. DoviakNational Severe Storms Laboratory, Norman, Oklahoma

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Print Publication:
01 Nov 2008
DOI:
https://doi.org/10.1175/2008JTECHA1055.1
Page(s):
1921–1938
Restricted access

Abstract

The theory of spaced-antenna interferometry (SAI) is formulated to detect and locate deterministic objects and reflectivity inhomogeneities embedded within the phased-array weather radar’s resolution volume V6 and to improve weather radar performance. An analogy is made between monopulse tracking and SAI. The cross-correlation function and its power spectrum are derived based on wave scattering by a large deterministic object and clusters of randomly distributed precipitation particles. It is shown that nonuniform beam filling leads to an effective narrower beam and an increase in cross-correlation coefficient at zero lag. Hence, an individual object or a subvolume inhomogeneity can be detected and located by SAI. This capability further enhances the potential applications of phased-array weather radar used as a multimission system.

Corresponding author address: Dr. Guifu Zhang, School of Meteorology, University of Oklahoma, 120 David L. Boren Blvd., Suite 5900, Norman, OK 73072. Email: guzhang1@ou.edu

Abstract

The theory of spaced-antenna interferometry (SAI) is formulated to detect and locate deterministic objects and reflectivity inhomogeneities embedded within the phased-array weather radar’s resolution volume V6 and to improve weather radar performance. An analogy is made between monopulse tracking and SAI. The cross-correlation function and its power spectrum are derived based on wave scattering by a large deterministic object and clusters of randomly distributed precipitation particles. It is shown that nonuniform beam filling leads to an effective narrower beam and an increase in cross-correlation coefficient at zero lag. Hence, an individual object or a subvolume inhomogeneity can be detected and located by SAI. This capability further enhances the potential applications of phased-array weather radar used as a multimission system.

Corresponding author address: Dr. Guifu Zhang, School of Meteorology, University of Oklahoma, 120 David L. Boren Blvd., Suite 5900, Norman, OK 73072. Email: guzhang1@ou.edu

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