The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
É proposto um método de calibração de erros de fase de ganho de sensor off-line para um arranjo linear usando uma fonte em local desconhecido. O método proposto é realizado através de três etapas. Primeiramente, com base na matriz de covariância observada, construímos uma função relacionada à direção, e fica provado que quando a função assume o valor mínimo, o valor correspondente deve ser a direção da fonte de calibração. Segundo, a direção da fonte de calibração é estimada localizando o vale a partir da função construída. Terceiro, os erros de fase de ganho são obtidos com base na direção estimada. O método proposto oferece uma série de vantagens. Primeiro, a medição precisa da direção da fonte de calibração não é necessária. Segundo, apenas uma fonte de calibração precisa ser organizada. Terceiro, não requer um procedimento iterativo ou uma pesquisa espectral bidimensional (2D). Quarto, o método é aplicável a matrizes lineares, não apenas a matrizes lineares uniformes (ULAs). Simulações numéricas são apresentadas para verificar a eficácia do método proposto.
Zheng DAI
Nanjing University of Science and Technology
Weimin SU
Nanjing University of Science and Technology
Hong GU
Nanjing University of Science and Technology
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Zheng DAI, Weimin SU, Hong GU, "A Calibration Method for Linear Arrays in the Presence of Gain-Phase Errors" in IEICE TRANSACTIONS on Fundamentals,
vol. E103-A, no. 6, pp. 841-844, June 2020, doi: 10.1587/transfun.2019EAL2160.
Abstract: An offline sensor gain-phase errors calibration method for a linear array using a source in unknown location is proposed. The proposed method is realized through three steps. First, based on the observed covariance matrix, we construct a function related to direction, and it is proved that when the function takes the minimum value, the corresponding value should be the direction of the calibration source. Second, the direction of calibration source is estimated by locating the valley from the constructed function. Third, the gain-phase errors are obtained based on the estimated direction. The proposed method offers a number of advantages. First, the accurate direction measurement of the calibration source is not required. Second, only one calibration source needs to be arranged. Third, it does not require an iterative procedure or a two-dimensional (2D) spectral search. Fourth, the method is applicable to linear arrays, not only to uniform linear arrays (ULAs). Numerical simulations are presented to verify the efficacy of the proposed method.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2019EAL2160/_p
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@ARTICLE{e103-a_6_841,
author={Zheng DAI, Weimin SU, Hong GU, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Calibration Method for Linear Arrays in the Presence of Gain-Phase Errors},
year={2020},
volume={E103-A},
number={6},
pages={841-844},
abstract={An offline sensor gain-phase errors calibration method for a linear array using a source in unknown location is proposed. The proposed method is realized through three steps. First, based on the observed covariance matrix, we construct a function related to direction, and it is proved that when the function takes the minimum value, the corresponding value should be the direction of the calibration source. Second, the direction of calibration source is estimated by locating the valley from the constructed function. Third, the gain-phase errors are obtained based on the estimated direction. The proposed method offers a number of advantages. First, the accurate direction measurement of the calibration source is not required. Second, only one calibration source needs to be arranged. Third, it does not require an iterative procedure or a two-dimensional (2D) spectral search. Fourth, the method is applicable to linear arrays, not only to uniform linear arrays (ULAs). Numerical simulations are presented to verify the efficacy of the proposed method.},
keywords={},
doi={10.1587/transfun.2019EAL2160},
ISSN={1745-1337},
month={June},}
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TY - JOUR
TI - A Calibration Method for Linear Arrays in the Presence of Gain-Phase Errors
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 841
EP - 844
AU - Zheng DAI
AU - Weimin SU
AU - Hong GU
PY - 2020
DO - 10.1587/transfun.2019EAL2160
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E103-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 2020
AB - An offline sensor gain-phase errors calibration method for a linear array using a source in unknown location is proposed. The proposed method is realized through three steps. First, based on the observed covariance matrix, we construct a function related to direction, and it is proved that when the function takes the minimum value, the corresponding value should be the direction of the calibration source. Second, the direction of calibration source is estimated by locating the valley from the constructed function. Third, the gain-phase errors are obtained based on the estimated direction. The proposed method offers a number of advantages. First, the accurate direction measurement of the calibration source is not required. Second, only one calibration source needs to be arranged. Third, it does not require an iterative procedure or a two-dimensional (2D) spectral search. Fourth, the method is applicable to linear arrays, not only to uniform linear arrays (ULAs). Numerical simulations are presented to verify the efficacy of the proposed method.
ER -