Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/208990
Title: A Novel Approach to Array Manifold Calibration Using Single-Direction Information for Accurate Direction-of-Arrival Estimation
Authors: Gangil Byun;Hosung Choo
Year: 2017
Publisher: IEEE
Abstract: A method of array manifold calibration using one steering vector measured in a single direction is proposed. The phase information of the measured steering vector is used to derive a novel calibration matrix that is proposed to compensate for the relative phase distortion (RPD) at each antenna port. We also present a metric function defined as a standard deviation of the RPD to determine the optimum calibration angle, which provides intuition for the cause of the accuracy degradation in the direction-of-arrival estimation. To verify the feasibility, a seven-element circular array with identical microstrip patch antennas is fabricated for calibrating its array manifold using a single steering vector measured in a full anechoic chamber. The calibrated array manifold is then used to estimate the direction of arrival, and its accuracy is compared to the calibrated result obtained from the traditional least-squares method. The results demonstrate that the estimation error can be improved by 54.9&x00B0; compared to the traditional least-squares method, when the number of measured steering vectors is extremely limited.
URI: http://localhost/handle/Hannan/208990
volume: 65
issue: 9
More Information: 4952,
4957
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7990229.pdf1.77 MBAdobe PDF
Title: A Novel Approach to Array Manifold Calibration Using Single-Direction Information for Accurate Direction-of-Arrival Estimation
Authors: Gangil Byun;Hosung Choo
Year: 2017
Publisher: IEEE
Abstract: A method of array manifold calibration using one steering vector measured in a single direction is proposed. The phase information of the measured steering vector is used to derive a novel calibration matrix that is proposed to compensate for the relative phase distortion (RPD) at each antenna port. We also present a metric function defined as a standard deviation of the RPD to determine the optimum calibration angle, which provides intuition for the cause of the accuracy degradation in the direction-of-arrival estimation. To verify the feasibility, a seven-element circular array with identical microstrip patch antennas is fabricated for calibrating its array manifold using a single steering vector measured in a full anechoic chamber. The calibrated array manifold is then used to estimate the direction of arrival, and its accuracy is compared to the calibrated result obtained from the traditional least-squares method. The results demonstrate that the estimation error can be improved by 54.9&x00B0; compared to the traditional least-squares method, when the number of measured steering vectors is extremely limited.
URI: http://localhost/handle/Hannan/208990
volume: 65
issue: 9
More Information: 4952,
4957
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7990229.pdf1.77 MBAdobe PDF
Title: A Novel Approach to Array Manifold Calibration Using Single-Direction Information for Accurate Direction-of-Arrival Estimation
Authors: Gangil Byun;Hosung Choo
Year: 2017
Publisher: IEEE
Abstract: A method of array manifold calibration using one steering vector measured in a single direction is proposed. The phase information of the measured steering vector is used to derive a novel calibration matrix that is proposed to compensate for the relative phase distortion (RPD) at each antenna port. We also present a metric function defined as a standard deviation of the RPD to determine the optimum calibration angle, which provides intuition for the cause of the accuracy degradation in the direction-of-arrival estimation. To verify the feasibility, a seven-element circular array with identical microstrip patch antennas is fabricated for calibrating its array manifold using a single steering vector measured in a full anechoic chamber. The calibrated array manifold is then used to estimate the direction of arrival, and its accuracy is compared to the calibrated result obtained from the traditional least-squares method. The results demonstrate that the estimation error can be improved by 54.9&x00B0; compared to the traditional least-squares method, when the number of measured steering vectors is extremely limited.
URI: http://localhost/handle/Hannan/208990
volume: 65
issue: 9
More Information: 4952,
4957
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7990229.pdf1.77 MBAdobe PDF