Galileo high accuracy service: initial definition and performance

Fernández‐Hernández, Ignacio; Chamorro-Moreno, Adrián; Cancela-Diaz, Simón; Calle-Calle, J. David; Zoccarato, Paolo; Blonski, Daniel; Senni, Tommaso; Blas, F. Javier de; Hernández, Carmelo; Simón, Javier; Mozo, A.

doi:10.1007/s10291-022-01247-x

Cited by 53 publications

(28 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Galileo High Accuracy Service, which is currently under development, offers freely available correction data for PPP with GPS and Galileo observations (GSA 2020;Fernández-Hernández et al 2022). Once completed, it will comprise orbit and clock corrections as well as code and phase biases enabling a better than 20 cm (95%) horizontal positioning accuracy at 5 min convergence time (Service Level 1).…”

Section: Has Overviewmentioning

confidence: 99%

“…Based on the above considerations, HAS messages for the 4-week campaign period (September 2-30, 2021) were decoded exclusively from the recorded raw data of the Oberpfaffenhofen station. Following RS decoding of the Galileo CNAV frames, orbit corrections, clock corrections and biases were extracted from the resulting HAS message as described in EU (2022) and Fernández-Hernández et al (2022). To facilitate the exchange of HAS data and their use in established tools for POD and GNSS data analysis, dedicated HAS orbit and clock products in SP3 (Hilla 2016) and clock RINEX format (Ray and Coleman 2017) were generated on a daily basis over the campaign period.…”

Section: Leo Gnss and Has Datamentioning

confidence: 99%

“…HAS pseudorange biases for GPS and Galileo are disseminated as observable-specific, pseudo-absolute biases, which are to be added to the corresponding observations by the user (EU 2022;Fernández-Hernández et al 2022). In the subsequent comparison with IGS DCBs, individual signals are identified by their RINEX observation codes (Romero 2021), which are listed in parenthesis after the signal names.…”

Section: Has Accuracymentioning

confidence: 99%

“…This situation is about to change with the launch of the new Galileo High Accuracy Service (HAS;GSA 2020;Fernández-Hernández et al 2022) that will transmit free correction data for GPS and Galileo broadcast ephemerides through the E6B signal of Galileo. Other than the Centimeter Level Augmentation Service (CLAS; Namie and Kubo 2020) of the Japanese Quasi-Zenith Satellite System (QZSS) and the PPP-B2b Precise Point Positioning Service of the Chinese BeiDou-3 system (Zhang et al 2022), the Galileo HAS is designed as a fully global service, offering GPS and Galileo correction data for world-wide users.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal

et al. 2022

Self Cite

View full text Add to dashboard Cite

The High Accuracy Service (HAS) is an upcoming addition to the Galileo service portfolio that offers free correction data for precise point positioning in real-time. Beyond terrestrial and aeronautical applications, precise orbit determination (POD) of satellites in low Earth orbit (LEO) has been proposed as a potential use case for HAS corrections in view of their global availability. Based on HAS data collected during a test campaign in September 2021, the benefit of HAS corrections is assessed for real-time, onboard navigation as well as near real-time POD on the ground using GNSS observations of the Sentinel-6A LEO satellite. Compared to real-time POD using only broadcast ephemerides, performance improvements of about 40%, 10%, and 5% in terms of 3D position error can already be achieved for GPS-only, GPS + Galileo, and Galileo-only navigation. While Galileo processing benefits only moderately from the HAS correction data during the early tests in view of an already excellent Open Service performance, their use is highly advantageous for GPS processing and enables dual-constellation navigation with balanced contributions of both GNSSs for improved robustness. For near real-time offline POD, HAS corrections offer reduced latency or accuracy compared to established ultra-rapid GNSS orbit and clock products as well as independence from external sources.

show abstract

Section: Has Overviewmentioning

confidence: 99%

Section: Leo Gnss and Has Datamentioning

confidence: 99%

Section: Has Accuracymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…The design of receivers operating in these environments requires special care of these constraints to fit their user requirements. Developments in GNSS constellations also offer new signals to respond to these challenges: additional frequencies, multipath resistant codes, higher signal strength and new services [3], [4]. Modernized signals offer many advantages by design, yet their complex structures significantly impact their processing complexities [5].…”

Section: Introductionmentioning

confidence: 99%

An Open-Source Software-Defined Receiver for GNSS Algorithms Benchmarking

Grenier

Lohan

Ometov

et al. 2022

2022 14th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

View full text Add to dashboard Cite

The development of new processing algorithms has always been at the centre of satellite navigation research, aiming to minimize complexity and maximize the quality of the results. Often, these two objectives cannot be achieved simultaneously; thus, identifying the necessary trade-offs are required. Over the last decade, the development of new GNSS constellations offering modernized signals at the cost of higher decoding complexity has led to many new algorithms proposals to decode these signals.Yet, the current research environment suffers from several flaws, namely a lack of interoperability and comparability between algorithms that do not allow a fair comparison between each proposal. Such a problem is the consequence of a lack of open-source solutions, leading to individual in-house software development and dataset acquisition. To address it, we postulate the need to develop an open-source research platform providing common software and reference datasets dedicated to specific environments and user scenarios. We present the current development status and provide a discussion on future developments.

show abstract

GNSS Global PPP System Technology: Bottleneck and Development Direction

Meng,

Xie,

et al. 2023

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

Galileo high accuracy service: initial definition and performance

Cited by 53 publications

References 18 publications

Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal

Orbit determination of Sentinel-6A using the Galileo high accuracy service test signal

An Open-Source Software-Defined Receiver for GNSS Algorithms Benchmarking

GNSS Global PPP System Technology: Bottleneck and Development Direction

Contact Info

Product

Resources

About