The Sentinel-3 Mission: Overview and status

Donlon, Craig; Berruti, B.; Mecklenberg, S.; Nieke, Jens; Rebhan, H.; Klein, Ulf; Buongiorno, A.; Mavrocordatos, C.; Frerick, J.; Seitz, B.; Goryl, Philippe; Féménias, Pierre; Stroede, J.; Sciarra, R.

doi:10.1109/igarss.2012.6351194

Cited by 16 publications

(9 citation statements)

References 2 publications

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“…The along-track resolution is significantly improved by an order magnitude (from several kilometers to a few hundred meters), which is particularly useful to capture the small scale features. Cryosat-2 is the first satellite to demonstrate the DDA approach, and Sentinel-3 satellites operate in DDA mode all the time [46,47]. China and other countries are also planning to launch altimeters of this type.…”

Section: Conclusion and Prospectivementioning

confidence: 99%

Coastal Altimetry: A Promising Technology for the Coastal Oceanography Community

Xu¹,

Ke²,

Xu³

et al. 2020

Estuaries and Coastal Zones - Dynamics and Response to Environmental Changes

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Satellite altimetry has been one of the most important implements for physical oceanographers. The conventional altimeter is best performed over open ocean surface, yet there are many attempts to exploit the potential of altimetry in coastal zone in the last decade. To achieve a high performance for coastal altimetry is a multi-fold effort: the more sophisticated instrument concepts, the smarter onboard trackers, the more expert data editing criteria, the more specific retracking algorithms, the more advanced error correction methods, etc. In this chapter, each of the above aspects is described in detail, and some representative works in the altimetry community are reviewed. Particularly, the coastal altimetry offshore Hong Kong is addressed as a case study to demonstrate the potential of the new technology. In the conclusive session, some prospects for the coastal oceanography community are presented.

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Section: Conclusion and Prospectivementioning

confidence: 99%

Coastal Altimetry: A Promising Technology for the Coastal Oceanography Community

Xu¹,

Ke²,

Xu³

et al. 2020

Estuaries and Coastal Zones - Dynamics and Response to Environmental Changes

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“…All the three Swarm satellites are equipped with identical POD instruments including GNSS receiver, Laser Retro-Reflector (LRR), and accelerometer. Sentinel-3 is a multi-instrument mission to measure sea-surface topography, sea-and land-surface temperature, ocean color, and land color with high accuracy and reliability [49]. Sentinel-3A was launched on 16 February 2016, followed Sentinel-3B on 25 April 2018.…”

Section: Data Setsmentioning

confidence: 99%

Real-Time Kinematic Precise Orbit Determination for LEO Satellites Using Zero-Differenced Ambiguity Resolution

Zhang

et al. 2019

Remote Sensing

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The rapid growing number of earth observation missions and commercial low-earth-orbit (LEO) constellation plans have provided a strong motivation to get accurate LEO satellite position and velocity information in real time. This paper is devoted to improve the real-time kinematic LEO orbits through fixing the zero-differenced (ZD) ambiguities of onboard Global Navigation Satellite System (GNSS) phase observations. In the proposed method, the real-time uncalibrated phase delays (UPDs) are estimated epoch-by-epoch via a global-distributed network to support the ZD ambiguity resolution (AR) for LEO satellites. By separating the UPDs, the ambiguities of onboard ZD GPS phase measurements recover their integer nature. Then, wide-lane (WL) and narrow-lane (NL) AR are performed epoch-by-epoch and the real-time ambiguity–fixed orbits are thus obtained. To validate the proposed method, a real-time kinematic precise orbit determination (POD), for both Sentinel-3A and Swarm-A satellites, was carried out with ambiguity–fixed and ambiguity–float solutions, respectively. The ambiguity fixing results indicate that, for both Sentinel-3A and Swarm-A, over 90% ZD ambiguities could be properly fixed with the time to first fix (TTFF) around 25–30 min. For the assessment of LEO orbits, the differences with post-processed reduced dynamic orbits and satellite laser ranging (SLR) residuals are investigated. Compared with the ambiguity–float solution, the 3D orbit difference root mean square (RMS) values reduce from 7.15 to 5.23 cm for Sentinel-3A, and from 5.29 to 4.01 cm for Swarm-A with the help of ZD AR. The SLR residuals also show notable improvements for an ambiguity–fixed solution; the standard deviation values of Sentinel-3A and Swarm-A are 4.01 and 2.78 cm, with improvements of over 20% compared with the ambiguity–float solution. In addition, the phase residuals of ambiguity–fixed solution are 0.5–1.0 mm larger than those of the ambiguity–float solution; the possible reason is that the ambiguity fixing separate integer ambiguities from unmodeled errors used to be absorbed in float ambiguities.

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“…For instance, the topography instruments SRAL and MWR need to change their mode depending upon the geographic location they are flying over, while the optical instruments SLSTR and OLCI have different constraints when operating during the "day" or "night" part of the orbit, due to data budgets. An overview of the Sentinel-3 mission can be found in Ref [2].…”

Section: Sentinel-3 Operational Conceptmentioning

confidence: 99%

What it has been like to fly and operate Europe’s ocean and land watcher, Copernicus Sentinel 3

Francisco

Trollope

Ventimiglia

et al. 2018

2018 SpaceOps Conference

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The Sentinel-3 Mission: Overview and status

Cited by 16 publications

References 2 publications

Coastal Altimetry: A Promising Technology for the Coastal Oceanography Community

Coastal Altimetry: A Promising Technology for the Coastal Oceanography Community

Real-Time Kinematic Precise Orbit Determination for LEO Satellites Using Zero-Differenced Ambiguity Resolution

What it has been like to fly and operate Europe’s ocean and land watcher, Copernicus Sentinel 3

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