6533b81ffe1ef96bd1277154
RESEARCH PRODUCT
Digital zenith camera for vertical deflection determination
Ansis ZariņšAugusts RubansJanis BalodisMāris AbeleIeva LasmaneInese Janpaulesubject
digital zenith cameraData processingQB275-343GNSSVertical deflectionTiltmetergeoidvertical deflectionGeodesyGeographyplumb linegeodetic astronomyGNSS applicationsGeneral Earth and Planetary SciencesZenith cameraPlumb bobGeodetic astronomyZenithGeodesyRemote sensingdescription
Recent accomplishments in advancement of accurate astrometric reference star catalogues, development of digital imaging technology, high accuracy tiltmeter technology, and geocentric coordinate availability provided by GNSS, have made possible accurate, fast and automated determination of vertical deflections using astrometric methods. Zenith cameras for this kind of measurements have been developed or are being developed by several research groups. The paper describes a research project by Institute of Geodesy and Geoinformation, intended to design a portable digital zenith camera for vertical deflection determination with 0.1” expected accuracy. Camera components are described, proposed data processing algorithm and preliminary results, obtained with prototype instrument, are presented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-12-21 | Geodesy and Cartography |