Polarimetric Weather Radar Calibration by Computational Electromagnetics
Keywords:
calibration, polarimetric weather radar, polarimetric weather radar calibration, radarAbstract
The paper proposes a technique for calibrating a large polarimetric phased array weather radar The focus is on the use of computational electromagnetics. It validates the accuracy of the computations on a scaled-down antenna model and derives calibration parameters for the same model. The proposed technique is demonstrated using the WIPL-D software. The calibration is illustrated with all mathematical concepts required to carry the calibration out. The concept is adapted to use the results of numerical simulations which is part of the paper’s novelty. Additionally, a roadmap of polarimetric phased array calibration is proposed and illustrated.
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References
P. L. Heinselman and S. M. Torres, "High-temporal-resolution capabilities of the national weather radar testbed phased-array radar," Journal of Applied Meteorology and Climatology, vol. 50, no. 3, pp. 579-593, 2011.
G. Zhang, R. J. Doviak, D. S. Zrnic, J. Crain, D. Stainman, and Y. AlRashid, "Phased Array radar polarimetry for weather sensing: A theoretical formulation for bias corrections," IEEE Trans. on Geoscience and remote sensing, vol. 47, no. 11, pp. 3679-3689, 2009.
D. S. Zrnic, R. J. Doviak, G. Zhang, Y. Zhang and C. Fulton, "Propagation and backscattering challenges for planar polarimetric phase array radars," in AMS Radar Conference Proceedings, Chicago, 2017.
C. Fulton, J. Salazar, D. Zrnic, D. Mirkovic, I. Ivic, and R. Doviak, "Polarimetric Phased Array Calibration for Large Scale Multi-Mission Radar Applications," in Proc. IEEE Radar, Oklahoma City, 2018.
L. Lei, G. Zhang, R. J. Doviak, and S. Karimkashi, "Comparison of theoretical biases in estimating polarimetric properties of precipitation with weather radar using parabolic reflector, or planar and cylindrical arrays," Trans. on Geoscience and Remote Sensing, vol. 53, no. 8, pp. 4313-4327, 2015.
V. Bringi and V. Chandrasekar, Polarimetric Doppler Weather Radar: Principles and Applications. Cambridge University Press, 2001.
M. Sachidananda and D. S. Zrnic, "Rain rate estimates from differential polarization measurements," J. Atmos. Oceanic Tech., vol. 4, pp. 588-598, 1977.
N. Balakrishnan and D. S. Zrnic, "Use of polarization to characterize precipitation and discriminate large hail," J. Atmos. Sci., pp. 1525-1540, 1990.
A. Mancini, J. Salazar, R. Lebron, and B. Leng Cheong, "A novel technique to characterize the effect of rain over a radome for radar applications," in IEEE Radar Conference 2017, Seattle, 2017.
