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Multi-frequency quadrifilar helix antennas for cm-accurate GNSS positioning

Lambert Wanninger, Melanie Thiemig, Volker Frevert
2021 Journal of Applied Geodesy  

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For a few years now, GNSS multi-frequency quadrifilar helix antennas (QHA) are available to be used for precise GNSS applications. We performed test measurements with two types of multi-frequency QHA and compared them with a geodetic patch antenna. Although code and carrier phase noise and high-frequent multipath was determined to be larger as compared to the geodetic antenna, the fast-static horizontal coordinate accuracies are on the same level and demonstrate cm-accuracy capability. One of
more » ... e QHA types exhibited an increased susceptibility to near-field multipath effects which resulted in a degraded accuracy of the vertical coordinate component.
doi:10.1515/jag-2021-0042 fatcat:3nqrncdbizgmbpnydvmbsg2x5e
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Lambert Wanninger, Melanie Thiemig, Volker Frevert. "Multi-frequency quadrifilar helix antennas for cm-accurate GNSS positioning." Journal of Applied Geodesy 16.1 (2021)