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Open AccessArticle

Bias Correction to Antenna Frequency Response for Wideband Polarimetric Phased Array Radar

State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, National University of Defense Technology, Changsha 410073, China
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Electronics 2019, 8(10), 1075; https://doi.org/10.3390/electronics8101075
Received: 30 August 2019 / Revised: 20 September 2019 / Accepted: 20 September 2019 / Published: 23 September 2019
(This article belongs to the Special Issue Recent Advances in Array Antenna and Array Signal Processing)
The frequency response of wideband polarimetric phased array radar antenna biases polarization measurement. A bias correction method named the iterative frequency division (IFD) algorithm is proposed in this paper to eliminate the effect of frequency response of the antenna system. The method is built on a new measurement bias model in which the effects of frequency response on the backscattering covariance matrix are analyzed. To demonstrate the effectiveness of the proposed method, a wideband microstrip patch array element is designed. Simulation results show that the biases of differential reflectivity ( Z D R ) and linear depolarization ratio ( L D R ) can be decreased to less than 0.1 dB and 40 dB even for wide beam direction. The proposed method maintains a favorable polarization measurement accuracy for wideband polarimetric phased array radar. View Full-Text
Keywords: wideband polarimetric phased array radar; polarization measurement; iterative frequency division; bias correction wideband polarimetric phased array radar; polarization measurement; iterative frequency division; bias correction
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Wang, Z.; Pang, C.; Li, Y.; Wang, X. Bias Correction to Antenna Frequency Response for Wideband Polarimetric Phased Array Radar. Electronics 2019, 8, 1075.

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