Estimation of phase center corrections for GLONASS-M satellite antennas

Dilßner, Florian; Springer, T.; Flohrer, Claudia; Dow, J. M.

doi:10.1007/s00190-010-0381-7

Cited by 23 publications

(13 citation statements)

References 18 publications

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“…Both offsets can be attributed to modelling deficiencies with impact in the radial direction, i.e., on the determination of the satellite's semimajor axis defining the orbit scale and the revolution period. This concerns models for the receiver and transmitter antenna phase center (see, e.g., Dilssner et al 2014), the Earth re-radiation, and the transmitter antenna thrust (Rodriguez-Solano et al 2012). As stated in Sect.…”

Section: Summary and Discussionmentioning

confidence: 99%

CODE’s five-system orbit and clock solution—the challenges of multi-GNSS data analysis

Prange

Orliac

Dach

et al. 2016

J Geod

165

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This article describes the processing strategy and the validation results of CODE's MGEX (COM) orbit and satellite clock solution including the satellite systems GPS, GLONASS, Galileo, BeiDou, and QZSS. The validation with orbit misclosures and SLR residuals shows that the orbits of the new systems Galileo, BeiDou, and QZSS are affected by modelling deficiencies with impact on the orbit scale (e.g., antenna calibration, Earth albedo, transmitter antenna thrust). Another weakness is the attitude and solar radiation pressure (SRP) modelling of satellites moving in the orbit normal mode-which is not yet correctly considered in the COM solution. Due to these issues we consider the current state COM solution as preliminary. We, however, use the long time series of COM products for identifying the challenges and for the assessment of model improvements. The latter is demonstrated on the example of the solar radiation pressure (SRP) model, which has been replaced by a more generalized model. The SLR validation shows that the new SRP model significantly improves the orbit determination of Galileo and QZSS satellites at times when the satellite's attitude is maintained by yaw-steering. The impact of this orbit improvement is also visible in the estimated satellite clocks-demonstrating the potential use of the new

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Section: Summary and Discussionmentioning

confidence: 99%

CODE’s five-system orbit and clock solution—the challenges of multi-GNSS data analysis

Prange

Orliac

Dach

et al. 2016

J Geod

165

View full text Add to dashboard Cite

show abstract

“…Based on a European network of 38 stations, Dousa (2010) indicated that the root mean square (RMS) of zenith total delay (ZTD) derived from GLONASS is 1-3 mm larger than that of GPS. The problem of 1.5 mm ZTD average biases was related to the inconsistent GLONASS satellite antenna phase center offsets (PCOs) and variations (PCVs) in igs05.atx models (see Dilssner et al, 2009). With the model updated (from igs05.atx to igs08.atx), Dousa and Vaclavovic (2016) found that the ZTD biases between GPS and GLONASS did not exist any longer.…”

Section: Gps+glonass Ionosphere-free Observation Modelmentioning

confidence: 99%

Comprehensive assessment of positioning and zenith delay retrieval using GPS+Glonass precise point positioning

Zhou¹

2017

Acta Geodynamica Et Geomaterialia

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“…Besides, long-term solutions are necessary to integrate the mean PCOs for the scale inconsistency reason [12]. Meanwhile, GLONASS (Global Navigation Satellite System) PCOs are also proposed base on more data 1.6 years observation datasets [13]. In parallel to GPS and GLONASS, continuous efforts are also made to the newly established navigation satellite systems, i.e., Galileo [14], BDS [15], QZSS (Japanese Quasi-Zenith Satellite System) [16] and IRNSS (Indian Regional Navigation Satellite System) [17].…”

Section: Introductionmentioning

confidence: 99%

Improved Antenna Phase Center Offsets for BDS-2 IGSO/MEO Satellites Based on MGEX Long-Term Observations

Zeng

Zhou

et al. 2020

IEEE Access

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For the purpose of further improving the solution accuracies of the orbital and geodetic parameters for BDS (BeiDou Navigation Satellite System) precise applications, this paper focuses on the enhancements of antenna phase center offsets (PCOs) for BDS-2 IGSOs (Inclined Geosynchronous Satellite Orbits) and MEOs (Medium Earth Orbits) through processing observations from a global tracking network. The daily estimated horizontal and vertical PCO time series of nearly three years from DOY (Day of Year) 001 in 2018 to DOY 180 in 2020 are obtained using the PANDA (Position And Navigation Data Analysis) software. The long-term PCO time series have seasonal variations and systematic effects along with the elevation angle of the Sun with respect to the orbital plane. Then, type-specific x-offsets and y-offsets of IGSOs and MEOs are comprehensively available considering the good consistency for the same satellite type. And a set of satellite-specific vertical offsets are recommended to BDS-2 IGSOs and MEOs since the low coherence of these satellites with the same type. Validation experiments are carried out for comparison between the original MGEX (Multi-GNSS Experiment) PCOs and the newly improved values (iMGEX PCOs for short), including the Precise Orbit Determination (POD) and Precise Point Positioning (PPP). Based on the orbital overlap analysis, the qualities of BDS-2 orbits show great enhancements in the alongtrack, cross-track and radial components, when the iMGEX PCOs are employed. Results of the independent assessment using SLR (Satellite Laser Ranging) also indicate the improvements on the radial component for C08, C10 and C11 satellites, and most of the orbit RMSs (Root Mean Squares) of iMGEX results decreased by 40.5% on average compared with the MGEX values. Additionally, the experimental station coordinates by static PPP achieve improvements at the rate of 27.1%, 32.6% and 28.4% in the east, north, and up component, respectively, in which more than a half stations realize sub-centimeter positioning accuracy in the north component using the iMGEX PCOs.

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Estimation of phase center corrections for GLONASS-M satellite antennas

Cited by 23 publications

References 18 publications

CODE’s five-system orbit and clock solution—the challenges of multi-GNSS data analysis

CODE’s five-system orbit and clock solution—the challenges of multi-GNSS data analysis

Comprehensive assessment of positioning and zenith delay retrieval using GPS+Glonass precise point positioning

Improved Antenna Phase Center Offsets for BDS-2 IGSO/MEO Satellites Based on MGEX Long-Term Observations

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