E3S Web Conf.
Volume 94, 2019International Symposium on Global Navigation Satellite System 2018 (ISGNSS 2018)
|Number of page(s)||5|
|Section||GNSS Today and Future|
|Published online||08 May 2019|
GNSS Array Antenna for Mitigating Multipath Errors in Urban Environment
Department of Aerospace Engineering, Osaka Prefecture University, Sakai City, Osaka, Japan
2 Department of Aerospace Engineering, Tokyo Metropolitan University, Hino City, Tokyo, Japan
3 Aeronautical Technology Directorate, Japan Aerospace Exploration Agency, Mitaka City, Tokyo, Japan
* Corresponding author: firstname.lastname@example.org
GNSS signal vulnerability has been a major concern especially for safety-of-life applications such as aircraft operations. Therefore, a GNSS array antenna technology was investigated focusing on beamforming to mitigate multipath errors in urban environment including airport surfaces. A commercial three-element GNSS antenna and RF-Front end were used to obtain digital IF data. The recorded In-phase/Quadrature IF data for three antennas were combined with proper weight to form beams towards satellites after so-called hardware biases were calibrated. Test results in multipath-rich environment demonstrated that 50-70% reduction of pseudorange errors due to multipath were possible if the beamforming algorithms were applied.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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