Impact of different GNSS antenna calibration models on height determination in the ASG-EUPOS network: a case study

Dawidowicz, Karol

doi:10.1179/1752270613y.0000000043

Cited by 12 publications

(8 citation statements)

References 16 publications

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“…Generally it can be concluded that GPS-only results are comparable to results obtained in other studies e.g. [5], [19]. There are lack of similar studies about GPS/GLONASS observations processing.…”

Section: Resultssupporting

confidence: 74%

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Phase center variations problem in GPS/GLONASS observations processing

Dawidowicz

2014

The 9th International Conference "Environmental Engineering 2014"

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It is generally known that the phase center of a GNSS antenna is not a stable point. For any given GNSS antenna, the phase centers will change with the changing direction of the signal from a satellite. The problem is particularly important when different antennae are used in measurements. Ignoring these phase center variations in measurements can lead to serious vertical errors. The way to avoid these errors is by applying antenna phase center variation models in processing. Three major methods are presently available to determine mean antenna phase center offsets as well as variations of the phase center with elevation and azimuth for GNSS receiver antennas. Because of this and because of some problems in introducing of absolute models at present we can speak of three models of receiver antennas PCV (relative, absolute converted and absolute) and two of satellites antennas (standard and absolute). Additionally, processing simultaneously observations from different positioning systems e.g. GPS and GLONASS, we can expect a further complication resulting from different structure of signals and differences in satellites constellations. The aim of this paper is to study the height differences in short static GPS/GLONASS observations processing when different calibration models are used. The analysis was done using 24 hour GNSS data divided by one hour observation sessions. The results show that switching between different PCV models may have a visible effect on height determination, particularly in high accuracy applications.

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Section: Resultssupporting

confidence: 74%

“…A review of the antenna phase center variations problem can be found e.g. in [1], [5], [8], [10], [14], [17], [18], [19].…”

Section: Introductionmentioning

confidence: 99%

Phase center variations problem in GPS/GLONASS observations processing

Dawidowicz

2014

The 9th International Conference "Environmental Engineering 2014"

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“…Therefore, modern technology should also be used for geodetic measurement techniques [30], (GPS positioning system, the techniques of photogrammetry, remote sensing, the use of automatic theodolites).…”

Section: )mentioning

confidence: 99%

Analysisof concepts of cadastral system technological development

Dawidowicz

Źróbek

2014

The 9th International Conference "Environmental Engineering 2014"

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The dynamic development of modern information technology (IT) directly affects the development of cadastral systems. These specialized information systems should adapt modern technical and technological solutions arising from the operational requirements of their functionality. Technological progress also relates surveying instruments and geodesy methods of measurement and analyzes of data in the field. The paper presents proposals of the cadastral system modernization in the technology development aspect, which have appeared in the international scientific forum since paradigm "Cadastre 2014". Authors have determined the direction of cadastre development in the context of technology evolution.

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“…Vӧlksen, 2006;Khoda and Bruyninx, 2007;Chatazinikos et al, 2009;Dawidowicz, 2013;Dawidowicz et al, 2015). Recently, the Precise Point Positioning (PPP) technique has also been used in such analyzes.…”

Section: Methodsmentioning

confidence: 99%

Analysis of PCC model dependent periodic signals in GLONASS position time series using Lomb_Scargle periodogram

Dawidowicz¹

2016

Acta Geodynamica Et Geomaterialia

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Exactly in November 2006 (GPS week 1400), the IGS analysis centers switched from using relative to absolute corrections. At the same time, also the EUREF analysis centers made this switch. Many research groups have evaluated the influence of the usage of relative PCC with respect to absolute PCC on the EPN site coordinates. The authors demonstrated the significant influences of the conversion from relative to absolute PCC. Maximum changes in height of about 30 mm occurred at some sites. The impact of switching from the type-mean to individual calibration model was also analyzed but so far in GPS-only mode. In the paper, the authors compared station positions estimated using GLONASS-only observations when type-mean and individual calibration models were applied. The impact of switching between these models was investigated using one year of observations collected at eight selected ASG-EUPOS station. Post-processing was done using PPP technique in daily observation mode and in pseudo-kinematic mode (15 minutes session). The authors demonstrated that the position offsets in daily observation resulting from the use of individual calibrations instead of type mean igs08.atx calibrations could reach up to 0.5 cm in the up component, while in the horizontal, the offsets generally stayed below 0.1 cm. In pseudokinematic mode the authors obtained up to 1.0 cm in the up component and 0.5 cm in the horizontal components respectively. It is also demonstrated that the differences in the calibrations models propagate directly into the position domain, affecting daily and sub-daily results and giving visible variations and systematic jumps. To detect the periodicity in our results spectral analysis was used. The LombScargle spectrum calculated for the data revealed that there are strong periodic signals in pseudokinematic results and there is also some periodicity in daily results. ARTICLE INFO

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Impact of different GNSS antenna calibration models on height determination in the ASG-EUPOS network: a case study

Cited by 12 publications

References 16 publications

Phase center variations problem in GPS/GLONASS observations processing

Phase center variations problem in GPS/GLONASS observations processing

Analysisof concepts of cadastral system technological development

Analysis of PCC model dependent periodic signals in GLONASS position time series using Lomb_Scargle periodogram

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