Calibration with high-order terms of polarimetric GPR

Xuan Feng; Lilong Zou; Qi Lu; Cai Liu; Wenjing Liang; Zheng Shu Zhou

doi:10.1109/JSTARS.2012.2191143

Calibration with high-order terms of polarimetric GPR

Xuan Feng, Lilong Zou, Qi Lu, Cai Liu, Wenjing Liang, Zheng Shu Zhou

Department of Basic Studies

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

To provide meaningful data, polarimetric ground penetrating radar (GPR) requires accurate calibration of channel imbalance and crosstalk not only in the amplitude term but also in the phase term. Currently, calibration techniques usually ignore higher-order terms to simplify equations. These techniques, though very easy to perform, provide less accurate calibration results for the crosstalk. To improve the accuracy of calibration, we have derived a new mathematical formulation to calibrate a polarimetric GPR system. We measured several scattering matrices to obtain the necessary calibration parameters. The calibration technique was tested from measurements conducted on a 22.5° oriented dihedral corner reflector from 1 to 6 GHz with a step of 0.1 GHz. The calibrated results are found to be consistent with the theoretically values, especially for the crosstalk.

Original language	English
Article number	6202364
Pages (from-to)	717-722
Number of pages	6
Journal	IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Volume	5
Issue number	3
DOIs	https://doi.org/10.1109/JSTARS.2012.2191143
Publication status	Published - 2012

Keywords

Calibration
GPR
high-order terms
polarimetry

ASJC Scopus subject areas

Computers in Earth Sciences
Atmospheric Science

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10.1109/JSTARS.2012.2191143

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title = "Calibration with high-order terms of polarimetric GPR",

abstract = "To provide meaningful data, polarimetric ground penetrating radar (GPR) requires accurate calibration of channel imbalance and crosstalk not only in the amplitude term but also in the phase term. Currently, calibration techniques usually ignore higher-order terms to simplify equations. These techniques, though very easy to perform, provide less accurate calibration results for the crosstalk. To improve the accuracy of calibration, we have derived a new mathematical formulation to calibrate a polarimetric GPR system. We measured several scattering matrices to obtain the necessary calibration parameters. The calibration technique was tested from measurements conducted on a 22.5° oriented dihedral corner reflector from 1 to 6 GHz with a step of 0.1 GHz. The calibrated results are found to be consistent with the theoretically values, especially for the crosstalk.",

keywords = "Calibration, GPR, high-order terms, polarimetry",

author = "Xuan Feng and Lilong Zou and Qi Lu and Cai Liu and Wenjing Liang and Zhou, {Zheng Shu}",

note = "Funding Information: Manuscript received September 19, 2011; revised December 20, 2011; accepted February 02, 2012. Date of publication May 17, 2012; date of current version June 28, 2012. This work was supported in part by the National Natural Science Foundation of China under Grant 40974068, the Program for New Century Excellent Talents in University under Grant NCET-09-0415, Jilin University Foundation for Distinguished Young Scientists under Grant 201005006, the National Public Benefit Scientific Research Foundation of China under Grant 201011078, and the National Innovation Research Project for Exploration and Development of Oil Shale under Grant OSP-02 and OSR-02.",

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doi = "10.1109/JSTARS.2012.2191143",

language = "English",

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AU - Feng, Xuan

AU - Zou, Lilong

AU - Lu, Qi

AU - Liu, Cai

AU - Liang, Wenjing

AU - Zhou, Zheng Shu

N1 - Funding Information: Manuscript received September 19, 2011; revised December 20, 2011; accepted February 02, 2012. Date of publication May 17, 2012; date of current version June 28, 2012. This work was supported in part by the National Natural Science Foundation of China under Grant 40974068, the Program for New Century Excellent Talents in University under Grant NCET-09-0415, Jilin University Foundation for Distinguished Young Scientists under Grant 201005006, the National Public Benefit Scientific Research Foundation of China under Grant 201011078, and the National Innovation Research Project for Exploration and Development of Oil Shale under Grant OSP-02 and OSR-02.

PY - 2012

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N2 - To provide meaningful data, polarimetric ground penetrating radar (GPR) requires accurate calibration of channel imbalance and crosstalk not only in the amplitude term but also in the phase term. Currently, calibration techniques usually ignore higher-order terms to simplify equations. These techniques, though very easy to perform, provide less accurate calibration results for the crosstalk. To improve the accuracy of calibration, we have derived a new mathematical formulation to calibrate a polarimetric GPR system. We measured several scattering matrices to obtain the necessary calibration parameters. The calibration technique was tested from measurements conducted on a 22.5° oriented dihedral corner reflector from 1 to 6 GHz with a step of 0.1 GHz. The calibrated results are found to be consistent with the theoretically values, especially for the crosstalk.

AB - To provide meaningful data, polarimetric ground penetrating radar (GPR) requires accurate calibration of channel imbalance and crosstalk not only in the amplitude term but also in the phase term. Currently, calibration techniques usually ignore higher-order terms to simplify equations. These techniques, though very easy to perform, provide less accurate calibration results for the crosstalk. To improve the accuracy of calibration, we have derived a new mathematical formulation to calibrate a polarimetric GPR system. We measured several scattering matrices to obtain the necessary calibration parameters. The calibration technique was tested from measurements conducted on a 22.5° oriented dihedral corner reflector from 1 to 6 GHz with a step of 0.1 GHz. The calibrated results are found to be consistent with the theoretically values, especially for the crosstalk.

KW - Calibration

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KW - polarimetry

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Calibration with high-order terms of polarimetric GPR

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Keywords

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