Integrated GNSS attitude determination and positioning for direct geo-referencing

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dc.identifier.uri Nadarajah, Nandakumaran Paffenholz, Jens-André Teunissen, Peter J.G. 2016-12-21T12:09:01Z 2016-12-21T12:09:01Z 2014
dc.identifier.citation Nadarajah, N.; Paffenholz, J.-A.; Teunissen, P.J.G.: Integrated GNSS attitude determination and positioning for direct geo-referencing. In: Sensors (Switzerland) 14 (2014), Nr. 7, S. 12715-12734. DOI:
dc.description.abstract Direct geo-referencing is an efficient methodology for the fast acquisition of 3D spatial data. It requires the fusion of spatial data acquisition sensors with navigation sensors, such as Global Navigation Satellite System (GNSS) receivers. In this contribution, we consider an integrated GNSS navigation system to provide estimates of the position and attitude (orientation) of a 3D laser scanner. The proposed multi-sensor system (MSS) consists of multiple GNSS antennas rigidly mounted on the frame of a rotating laser scanner and a reference GNSS station with known coordinates. Precise GNSS navigation requires the resolution of the carrier phase ambiguities. The proposed method uses the multivariate constrained integer least-squares (MC-LAMBDA) method for the estimation of rotating frame ambiguities and attitude angles. MC-LAMBDA makes use of the known antenna geometry to strengthen the underlying attitude model and, hence, to enhance the reliability of rotating frame ambiguity resolution and attitude determination. The reliable estimation of rotating frame ambiguities is consequently utilized to enhance the relative positioning of the rotating frame with respect to the reference station. This integrated (array-aided) method improves ambiguity resolution, as well as positioning accuracy between the rotating frame and the reference station. Numerical analyses of GNSS data from a real-data campaign confirm the improved performance of the proposed method over the existing method. In particular, the integrated method yields reliable ambiguity resolution and reduces position standard deviation by a factor of about 0:8, matching the theoretical gain of ?3/4 for two antennas on the rotating frame and a single antenna at the reference station. eng
dc.description.sponsorship Cooperative Research Centre for Spatial Information (CRC-SI)
dc.description.sponsorship Australian Space Research Program Garada
dc.description.sponsorship Graduiertenakademie of the Leibniz Universit¨at Hannover
dc.description.sponsorship Australian Research Council Federation Fellowship
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Sensors 14 (2014)
dc.rights CC BY 3.0 Unported
dc.subject Attitude determination eng
dc.subject Carrier phase ambiguity resolution eng
dc.subject Direct geo-referencing eng
dc.subject Global navigation satellite system (GNSS) eng
dc.subject Laser scanner eng
dc.subject Multivariate constrained integer least-squares (MC-LAMBDA) eng
dc.subject Antennas eng
dc.subject Laser applications eng
dc.subject Least squares approximations eng
dc.subject Navigation systems eng
dc.subject Sensors eng
dc.subject Georeferencing eng
dc.subject Least Square eng
dc.subject Global positioning system eng
dc.subject.ddc 530 | Physik ger
dc.subject.ddc 550 | Geowissenschaften ger
dc.title Integrated GNSS attitude determination and positioning for direct geo-referencing
dc.type article
dc.type Text
dc.relation.issn 14248220
dc.bibliographicCitation.issue 7
dc.bibliographicCitation.volume 14
dc.bibliographicCitation.firstPage 12715
dc.bibliographicCitation.lastPage 12734
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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