Sentinel-6A attitude modeling with dual GNSS antennas and its impact on precise orbit determination

Jin, Biao; Chen, Shanshan; Li, Min; Yue, Fuzhan; Zhao, Liqian

doi:10.1007/s10291-022-01346-9

Cited by 3 publications

(1 citation statement)

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“…Global Navigation Satellite System (GNSS) including GPS, Galileo and BDS etc., provide a precise orbit determination (POD) technology for low orbit satellites (LEO), and the GNSS satellites are also capable to be observed by satellite laser ranging (SLR). Sentinel-6A is designed to accurately measure sea level height and study the atmosphere using the GNSS Radio-Occultation sounding technique (Donlon et al, 2021;Scharroo et al, 2016), which is equipped with laser retroreŕector arrays (LRA) for satellite laser ranging (SLR) and a PODRIX receiver with two GNSS antennas (Jin et al, 2023;Montenbruck et al, 2021), as illustrated in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Determination of Precise Galileo and Sentinel-6A Orbits through the Integration of GNSS and SLR Data

Jiang,

Cui,

Chen

et al. 2024

Preprint

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Both Galileo and Sentinel-6A satellites are equipped with GNSS and SLR observation capabilities, which shows the potential to improve the orbits by combining both GNSS and SLR data. In this study, Galileo and Sentinel-6A satellites reduced dynamic orbits were determined by integrating GNSS and SLR data at the observation level, where two weighting strategies and the impact of SLR data on the final orbits were assessed. Data over 300 days were adopted in the experiments. It is found that the 3D RMS between dynamic and kinematic orbits for Sentinel-6A during the satellite maneuvers on DOY 173 is reduced by 10\%, which indicate the SLR data could bring a significant improvement to the dynamic Sentinel-6A orbits when satellite maneuvers. Moreover, in comparison to GNSS-only solutions, the adoption of the dynamic weighting strategy during orbital maneuvers has demonstrated a decrease in SLR residuals STD values by 9\% to 46\%. The results also show that introducing the SLR data can lead to a reduction of approximately 5\% in the averaged overlapping RMS for Galileo satellites. Nonetheless, the integration of SLR observations could enhance the accuracy and reliability of both Galileo and Sentinel-6A orbits, especially during orbital maneuvers.

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Section: Introductionmentioning

confidence: 99%