Open AccessDual Band GNSS Antenna Phase Center Characterization for Automotive Applications
Author(s) -
Ran Liu and,
Daniel N. Aloi
Publication year - 2021
Publication title -
international journal of antennas
Language(s) - English
Resource type - Journals
ISSN - 2455-7897
DOI - 10.5121/jant.2021.7401
Subject(s) - gnss applications , glonass , real time kinematic , satellite system , computer science , global positioning system , antenna (radio) , galileo (satellite navigation) , phase center , remote sensing , telecommunications , geography
High-accuracy Global Navigation Satellite System (GNSS) positioning is a prospective technology that will be used in future automotive navigation systems. This system will be a composite of the United States' Global Positioning System (GPS), the Russian Federation's Global Orbiting Navigation Satellite System (GLONASS), China Beidou Navigation Satellite System (BDS) and the European Union’s Galileo. The major improvement in accuracy and precision is based on (1) multiband signal transmitting, (2) carrier phase correction, (3) Real Time Kinematic (RTK). Due to the size and high-cost of today’s survey-grade antenna solutions, this kind of technology is difficult to use widely in the automotive sector. In this paper, a low-cost small size dual-band ceramic GNSS patch antenna is presented from design to real sample. A further study of this patch antenna illustrates the absolute phase center variation measured in an indoor range to achieve a received signal phase error correction. In addition, this low-cost antenna solution is investigated when integrated into a standard multi-band automotive antenna product. This product is evaluated both on its own in an indoor range and on a typical vehicle roof at an outdoor range. By using this evaluation file to estimate the receiver position could achieve phase motion error-free result.