Estimation of antenna phase center offsets for BeiDou IGSO and MEO satellites

Xia, Fengyu; Ye, Shirong; Chen, Dezhong; Wu, Jing; Wang, Chen; Sun, Weiyi

doi:10.1007/s10291-020-01002-0

Cited by 13 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the FengYun-3C onboard data were used to extend the PCV estimation of BDS-2 IGSO and MEO (Qu 2021). For the BDS-3 satellites, although the ground calibrated PCO values have already been provided by the CSNO, the preliminary estimates of satellite antenna PCCs in the ITRF14 frame are carried out by Yan et al (2019a, b), Springer et al (2020), andXia et al (2020). The results show that the discrepancy between the estimated and the ground calibrated PCOs is within a decimeter, and the estimation is affected by the receiver antenna models as well as the SRP model.…”

Section: Phase Center Correctionmentioning

confidence: 99%

Precise orbit determination for BDS satellites

et al. 2022

Self Cite

View full text Add to dashboard Cite

Since the first pair of BeiDou satellites was deployed in 2000, China has made continuous efforts to establish its own independent BeiDou Navigation Satellite System (BDS) to provide the regional radio determination satellite service as well as regional and global radio navigation satellite services, which rely on the high quality of orbit and clock products. This article summarizes the achievements in the precise orbit determination (POD) of BDS satellites in the past decade with the focus on observation and orbit dynamic models. First, the disclosed metadata of BDS satellites is presented and the contribution to BDS POD is addressed. The complete optical properties of the satellite bus as well as solar panels are derived based on the absorbed parameters as well the material properties. Secondly, the status and tracking capabilities of the L-band data from accessible ground networks are presented, while some low earth orbiter satellites with onboard BDS tracking capability are listed. The topological structure and measurement scheme of BDS Inter-Satellite-Link (ISL) data are described. After highlighting the progress on observation models as well as orbit perturbations for BDS, e.g., phase center corrections, satellite attitude, and solar radiation pressure, different POD strategies used for BDS are summarized. In addition, the urgent requirement for error modeling of the ISL data is emphasized based on the analysis of the observation noises, and the incompatible characteristics of orbit and clock derived with L-band and ISL data are illuminated and discussed. The further researches on the improvement of phase center calibration and orbit dynamic models, the refinement of ISL observation models, and the potential contribution of BDS to the estimation of geodetic parameters based on L-band or ISL data are identified. With this, it is promising that BDS can achieve better performance and provides vital contributions to the geodesy and navigation.

show abstract

Section: Phase Center Correctionmentioning

confidence: 99%

Precise orbit determination for BDS satellites

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…For BDS-3 Medium Earth Orbit (MEO) satellites, the results of Xia et al (2020) and Villiger et al (2021) confirmed a fairly decent agreement between the PCO estimates from the GNSS network processing and the manufacturer values. Unfortunately, the empirical PCO estimates are so far only available for B1I/B3I but not B1C/B2a and are limited to PRNs of up to C37.…”

Section: Introductionmentioning

confidence: 63%

“…The information about the PCOs for the BDS satellites opened up a space for the second GNSS able to provide an independent realization of the TRF scale. Xia et al (2020) provided the first validation of the PCO values released by CSNO. For BDS-2, it has been recognized that the CSNO-TARC manufacturer calibrations are in poor agreement with the empirical estimates and the type mean values presently used in the current IGS antenna model (igs14.atx; Rebischung and Schmid 2016) do a much better job.…”

Section: Introductionmentioning

confidence: 99%

On the potential contribution of BeiDou-3 to the realization of the terrestrial reference frame scale

2022

View full text Add to dashboard Cite

Since the release of the phase center calibrations for both the receivers and the satellites, the BeiDou Navigation Satellite System (BDS) became a new potential contributor to the realization of the terrestrial reference frame (TRF) scale of future International Terrestrial Reference Frame releases. This study focuses on the evaluation of the potential usage of the BDS-3 Medium Earth Orbit (MEO) constellation to the definition of the TRF scale. To that aim, we used ground calibrated BDS-3 satellite PCOs provided by the China Satellite Navigation Office and multi-GNSS robot calibrations for the ground antennas conducted by Geo++. Two ionosphere-free linear combinations of signals, namely B1I/B3I and B1C/B2a, have been investigated to find out whether using different frequencies may lead to different TRF scale definitions. Differences between the z components of the satellite phase offsets as given by manufacturer calibrations and those estimated based on IGS14 scale amount to 6.55 ± 12.56 cm and − 0.32 ± 10.99 cm for B1I/B3I and B1C/B2a frequency pairs, respectively. On the one hand, the substantial deviation from the mean reflects the disparities in the quality of calibrations for the individual spacecraft, especially those manufactured by the Shanghai Engineering Center for Microsatellites (SECM). On the other hand, the difference between the two frequency pairs arises to a great extent from the doubtful quality of the SECM PCO calibrations, which certainly do not reflect the frequency dependence of the PCOs. Eventually, the mean scale bias with respect to IGS14 equals + 0.546 ± 0.085 ppb and + 0.026 ± 0.085 ppb for B1I/B3I and B1C/B2a solutions, respectively, when using all 24 BDS-3 MEO satellites.

show abstract

“…Thereby, the scale factor of the ground station network was aligned to that of the IGS14 frame. BDS frequencies receiver antenna calibrations have been available in igsR3_2077.atx [16]. The Saastamoinen model and global mapping function (GMF) were used to estimate zenith troposphere delay (ZTD) in this contribution.…”

Section: Datasets and Processing Strategymentioning

confidence: 99%

Data Quality Analysis of Multi-GNSS Signals and Its Application in Improving Stochastic Model for Precise Orbit Determination

et al. 2022

View full text Add to dashboard Cite

Currently, there are more Global Navigation Satellite System (GNSS) signals available for civilians. Many types of GNSS receivers have been updated and several new receivers have been developed for new signals. To know about the performance of these signals and receivers and their stochastic model for data processing, in this study, the data quality of all GNSS signals, especially the new signals are analyzed, and two modified stochastic models with observation noise statistics (STA) and post-fit residuals (RES) are formed. The results show that for all the new signals, the corresponding carrier phase noise is at the same level as other old signals. The pseudorange noise of B2a, L5, E5a, and E5b is within 4 cm and significantly smaller than other signals for receivers without a smooth algorithm, and the multipath error of these signals is about 0.1 m which is also better than other signals. For B1C, the pseudorange multipath error is about 0.4 m, which is close to L1 and E1. Stochastic models are validated for precise orbit determination (POD). Compared with the empirical stochastic model (EMP), both modified models are helpful to reduce the mean unit weight square error and obtain high accuracy orbits with reduced iteration. The 3D orbit accuracy improvement can reach 0.27 cm (7%) for the STA model, and 0.40 cm (10%) for the RES model when compared with the final products from the international GNSS service (IGS). For BDS-3 POD by using B1C and B2a observations, the improvements in the 3D orbit consistency of two adjacent three-day solutions are 0.21 cm (3%) for the STA model and 0.29 cm (4%) for the RES model. In addition, the STA model based on the observation noise of globally distributed stations is less affected by stations with problematic observations and with reduced computation burden.

show abstract

Estimation of antenna phase center offsets for BeiDou IGSO and MEO satellites

Cited by 13 publications

References 26 publications

Precise orbit determination for BDS satellites

Precise orbit determination for BDS satellites

On the potential contribution of BeiDou-3 to the realization of the terrestrial reference frame scale

Data Quality Analysis of Multi-GNSS Signals and Its Application in Improving Stochastic Model for Precise Orbit Determination

Contact Info

Product

Resources

About