Tests of phase center variations of various GPS antennas, and some results |
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Authors: | Martin Schmitz Gerhard Wübbena Gerald Boettcher |
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Institution: | Geo++ Gesellschaft für satellitengestützte geod?tische und navigatorische Technologien GmbH, Steinriede 8, 30827 Garbsen, Germany,
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Abstract: | Phase variations of GPS receiving antennas are a significant error component in precise GPS applications. A calibration procedure
has been developed by Geo++ and the Institut für Erdmessung, which directly determines absolute phase center variations (PCVs)
without any multipath influence by field measurements. The precision and resolution of the procedure allows the determination
of reliable azimuthal variations. PCV may affect long-term static GPS differently than real-time GPS, depending on the applications.
At the same time, different antenna types are involved. Less investigations have been done on absolute PCV of rover antennas
than on geodetic antennas which, however, becomes more important due to the mixed antenna situation in GPS reference networks
and RTK networks. The concepts of the absolute PCV field calibration are summarized and emphasis is placed on a variety of
absolute PCV patterns of geodetic and rover antennas.
Electronic Publication |
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Keywords: | |
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