A Priori Solar Radiation Pressure Model for BeiDou-3 MEO Satellites

Xiao, Yan; Liu, Chenchen; Huang, Guanwen; Zhang, Qin; Wang, Le; Qin, Zhiwei; Xie, Sujuan

doi:10.3390/rs11131605

Cited by 27 publications

(13 citation statements)

References 27 publications

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“…CAST and SECM MEO satellites have opposite patterns of SLR residuals with the similar absolute value of slope due to that the Z-bus area with transmitter antennas is much larger than the X-bus surface area for SECM satellites and opposite for CAST. The systematic patterns of the SLR residuals can be reduced by using the a priori box-wing or cuboid box model based on CSNO released or calibrated metadata of BDS-3 satellites (Li et al, 2020a;Duan et al, 2021a;Yan et al, 2019b), as well as the purely empirical ECOM2 model (Yan et al 2019b). In general, better performance can be obtained for those models with calibrated optical coefficients.…”

Section: Solar Radiation Pressure (Srp)mentioning

confidence: 99%

Precise orbit determination for BDS satellites

et al. 2022

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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.

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Section: Solar Radiation Pressure (Srp)mentioning

confidence: 99%

Precise orbit determination for BDS satellites

et al. 2022

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“…In this work, the average of the daily x-offset estimation of the China Academy of Space Technology (CAST) satellite was −0.321 ± 0.092 m, with a systematic variation of about 0.4 m by the ECOM1. After adding the a priori SRP model [15], a constraint of 1 nm/s 2 was also applied to the D 0 parameter, and a stationary sequence with the average of −0.227 ± 0.044 m was obtained. Comparing the two averages and STDs, the average of x-offset estimations had a difference of about 0.1 m, and the stability was improved by 50%.…”

Section: Discussionmentioning

confidence: 99%

“…Although the ECOM2 model [24] was better used than the ECOM1 for precise orbit determination of the cuboid satellites [15,25], it was not applied for estimating PCOs, because the increased parameters of second-and fourth-order harmonic terms for the D-component caused a higher correlation between PCOs and SRP parameters [5].…”

Section: Solar Radiation Pressure Modelmentioning

confidence: 99%

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Estimation of the Antenna Phase Center Correction Model for the BeiDou-3 MEO Satellites

et al. 2019

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Satellite antenna phase center offsets (PCOs) and phase variations (PVs) for BeiDou-3 satellites are estimated based on the tracking data of the Multi-GNSS Experiment (MGEX) and the international GNSS Monitoring and Assessment System (iGMAS) network. However, when estimating the (PCOs) of BeiDou-3 medium Earth orbit (MEO) satellites by pure Extending the CODE Orbit Model (ECOM1), the x-offset estimations of the PCOs have a systematic variation of about 0.4 m with the elevation of the Sun above the orbital plane (β-angle). Thus, a priori box-wing solar radiation pressure (SRP) model of BeiDou-3 MEO was assisted with ECOM1. Then, the satellite type-specific PCOs and common PVs were obtained. The estimations of PCOs and PVs were compared with the MGEX PCOs from the precise orbit and clock offset. When the MGEX PCOs were used, the root mean square (RMS) of 24 h overlap was 6.76, 4.36, 1.46 cm, in along-track, cross-track, and radial directions, respectively; the RMS and standard deviations (STD) of the 24 h clock offset overlap were 0.28 and 0.15 ns; the fitting RMS of the 72 h clock offset of the quadratic polynomial was 0.243 ns. After comparing this with the estimated PCOs and PVs, the RMS of the 24 h orbit overlap was decreased by 6.5 mm (10.54%), 1.8 mm (4.4%), and 1.1 mm (8.03%) in the along-track, cross-track, and radial directions, respectively; the RMS and STD of the 24 h clock offset overlap were decreased by 0.024 ns (8.6%) and 0.020 ns (13.1%), respectively; the fitting RMS of the 72 h clock offset of the quadratic polynomial was reduced by about 0.016 ns (6.5%).

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“…The analysis centers process the observations collected by tracking stations to generate high-precision GNSS products and submit the products to ISC. Currently, twelve ACs contribute products to iGMAS ISC routinely: Beijing Aerospace Control Center (BAC) [24], Chinese Academy of Surveying and mapping (CGS), Chang'an University (CHD) [25], China University of Mining and Technology (CUM) [26], Institute of Geodesy and Geophysics (CGS), Information Engineering University (LSN) [27], National Time Service Center (NTS) [28], Shanghai Astronomical Observatory (SHA), Tongji University (TJU), Xi'an Research Institute of Surveying and Mapping (XRS) [27], Xi'an Satellite Control Center (XSC) [29], and Wuhan University (WHU) [30].…”

Section: Overview Of Igmas Iscmentioning

confidence: 99%

Multi-GNSS Combined Orbit and Clock Solutions at iGMAS

Zhou¹,

Cai²,

Chen

et al. 2022

Sensors

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Global navigation services from the quad-constellation of GPS, GLONASS, BDS, and Galileo are now available. The international GNSS monitoring and assessment system (iGMAS) aims to evaluate the navigation performance of the current quad systems under a unified framework. In order to assess impact of orbit and clock errors on the positioning accuracy, the user range error (URE) is always taken as a metric by comparison with the precise products. Compared with the solutions from a single analysis center, the combined solutions derived from multiple analysis centers are characterized with robustness and reliability and preferred to be used as references to assess the performance of broadcast ephemerides. In this paper, the combination method of iGMAS orbit and clock products is described, and the performance of the combined solutions is evaluated by various means. There are different internal precisions of the combined orbit and clock for different constellations, which indicates that consistent weights should be assigned for individual constellations and analysis centers included in the combination. For BDS-3, Galileo, and GLONASS combined orbits of iGMAS, the root-mean-square error (RMSE) of 5 cm is achieved by satellite laser ranging (SLR) observations. Meanwhile, the SLR residuals are characterized with a linear pattern with respect to the position of the sun, which indicates that the solar radiation pressure (SRP) model adopted in precise orbit determination needs further improvement. The consistency between combined orbit and clock of quad-constellation is validated by precise point positioning (PPP), and the accuracies of simulated kinematic tests are 1.4, 1.2, and 2.9 cm for east, north, and up components, respectively.

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A Priori Solar Radiation Pressure Model for BeiDou-3 MEO Satellites

Cited by 27 publications

References 27 publications

Precise orbit determination for BDS satellites

Precise orbit determination for BDS satellites

Estimation of the Antenna Phase Center Correction Model for the BeiDou-3 MEO Satellites

Multi-GNSS Combined Orbit and Clock Solutions at iGMAS

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