SATELLITE NAVIGATION SYSTEMS

SIGNAL PROCESSING, MATHEMATICS, STATISTICS, ALGORITHMS, IMAGE PROCESSING

GNSS ENGINEERING
DESIGN AND DEVELOPMENT OF ALGORITHMS
EXPERT SOFTWARE & TOOLS GNSS APPLICATIONS

GNSS Signal Processing

WE PROPOSE

  • The supply of services and products derived from the use of Satellite Navigation Systems, such as GPS, EGNOS, GALILEO, etc.

  • Satellite navigation systems engineering support for manufacturers and institutional agencies involved in the design, manufacture or implementation of such systems.

  • Expertise, consulting and development of GNSS software products for system qualification and performance estimation.

  • Expertise, consulting and development of software products for communications analysis and hybrid data processing.

Since 2006, our team has been involved in the main European GNSS programs, working closely with the major players in the European GNSS actors.

ABBIA has been involved in the EGNOS programs from early studies (phases A/B), development and deployment activities (phases C/D) and maintenance support (phase E) as a company providing strong GNSS expertise.

Our activities cover various fields:

  • Systems engineering
  • Multi-frequency, multi-constellation GNSS signal processing
  • CPF (Central Processing Facility) algorithms and performance
  • AIV-IVQ (Assembly/Integration/Validation and Qualification) of the CPF, then of the EGNOS system
  • EGNOS Maintenance and Operations Support
  • Development of software tools for qualification of EGNOS subsystems and system
  • Expert support for EGNOS subsystem and system evolution studies
  • Day-to-day management of test benches and simulators (EETES, SPEED, RDG)

We are proud of our involvement as an expert company in all three EGNOS programs.

Since 2006, our team has been involved in the main European GNSS programs, working in close collaboration with the major European GNSS actors.

ABBIA has been involved in the GALILEO program on development and deployment activities (phases C/D) and maintenance support (phase E) as a company providing strong GNSS expertise.

Our activities cover various fields:

  • GALILEO signal processing
  • IVQ (Integration/Validation/Qualification) of the navigation chain of the GALILEO ground mission segment (GMS) in charge of generating and broadcasting the navigation message (GSS, OSPF, MGF, ULS)
  • IVQ of the GMS operational chain (MSF, MUCF, GACF)
  • IVQ training platform (VTP)
  • GMS Maintenance and Operations Support
  • Development of software tools for qualification of GMS subsystems
  • Design and development of GMS local maintenance equipment (LME)

Since 2010, our team has been involved in robust and resilient GNSS receiver technologies for highly constrained urban environments.

Our work focuses on the following areas:

  • Processing of new GNSS signals
  • Design and development of a multi-frequency, multi-constellation GNSS software receiver
  • Design and development of innovative algorithms for hooking and tracking signals in highly degraded reception situations
  • Characterization of multipath errors in dense urban environments
  • Improvements to PVT estimation in dense urban environments
  • Design and development of an AI-based model to use all available information from degraded signals
  • Innovative algorithms based on the use of opportunity signals

Some references activities

EGNOS
Airbus Defence and Space (France)
  • As part of the EGNOS V3 program, support for phase B activities.
  • Generation of data sets and studies.
Airbus Defence and Space (GmbH)
  • Design and development of a suite of software tools for EGNOS V3 Qualification.
  • These tools perform multi-constellation, multi-frequency performance analysis.

PEACE EGNOS

Thales Alenia Space
  • EGNOS AOC & EGNOS V2 CENTRAL PROCESSING FACILITY (CPF)

Support for CPF Assembly, Integration, Validation and Qualification (AIVQ) activities.
CPF Performance Analysis.

  • IVQ EGNOS V2

Coordination and follow-up of EGNOS V2 system qualification activities.

  • EGNOS V2 MAINTENANCE

Coordination and follow-up of EGNOS V2 software maintenance activities.

  • AIVQ SPEED

Support for SPEED Assembly, Integration, Validation and Qualification (AIVQ) activities.
Support for operation and maintenance of the SPEED simulator for EGNOS V2 CPF, System and Performance Qualification activities.

  • OPERATION OF SPEED SIMULATORS

Support for operation of the SPEED simulator for CNES experimentation activities.
Support for SPEED simulator operation for performance analysis activities for ESSP.

ESA EGNOS PROJECT OFFICE
  • EGNOS GEO RANGING STUDIES

Support for studies and analysis of the introduction of GEO Ranging to improve EGNOS performance.
In charge of Performance estimation and recommendations for substantial gains.

  • VARIOUS STUDIES

In charge of several studies as part of EGNOS V3 phase B activities, notably on the modeling and analysis of the effects of ionospheric scintillation on GNSS signals. Provided technical notes and associated software tools.

ESSP
  • Technical assistance to EGNOS operator for EGNOS V2 operational system performance analysis.
  • Training of maintenance operators.
GALILEO
THALES ALENIA SPACE (FRANCE)
  • GMS IVQ

Support for integration, validation and qualification of the GMS navigation chain.

  • MAINTENANCE IN OPERATIONAL CONDITIONS

Support for the definition of GMS operational maintenance processes and procedures.

  • LOCAL MAINTENANCE EQUIPMENT (LME)

Design, production and delivery of several operational versions of the electronic case used for on-site maintenance of GMS software subsystem

local maintenance equipment

  • GALILEO Messages Decoder Interface (GMDI)

Design, production and delivery of several operational versions of a software tool for analyzing message flows between GMS subsystems.

galileo messages decoder interface

THALES ALENIA SPACE (GMBH)
  • VALIDATION TRAINING PLATFORM (VTP)

Support for engineering activities on the VTP platform.

  • VTP IVQ

Support for integration, validation and qualification activities on the VTP platform.

EUSPA

Design and implementation of demonstrations on the use of European GNSS signals in Africa. Project funded by the GSA as part of Horizon 2020.

On the field experiments:

  • Tracking multimodal (train and road) container transport in Cameroon (based on the use of GPS and GALILEO signals).
  • Mobile tracking in airport areas in Senegal and Mozambique.

Tracking multimodal

OASIS SOFTWARE TOOLBOX

OUTILS D’ANALYSE DES SIGNAUX SATELLITAIRES DE RADIO NAVIGATION

MON

Analysis of satellite or IGP monitoring of any existing or future SBAS (SBAS DFMC).

USR

Position-Speed-Time solution estimation based on raw GPS data or by applying SBAS corrections (DFMC).

REC

Analysis of the quality of the environment around a GNSS receiver, analysis of the code and carrier of GNSS signals with respect to interferers.

SCINT

Model the effects of scintillation on GNSS signals and receivers. Characterization of performance impacts (loss of lock, cycle jumps, signal-to-noise ratio degradation, etc.)

ION

Ionosphere monitoring using SBAS corrections or public available data.

DG

Tools for injecting stimuli into navigation and/or observation Rinex files in a controlled and consistent way.
Modify Rinex files by inserting modifications related to the environment around a receiver (effects of ionosphere scintillation, multipath, jammers, etc.).
Productivity gains to test your applications and make them more robust.

AZ

Tool for propagating vertical (VTEC) or oblique (STEC) delays of radio navigation signals using a NeQuick model with Effective Ionization Parameters (AZ) as input.
This tool offers a complete characterization of STEC and VTEC in terms of AATR (Along-Arc TEC rate) and spatial and temporal gradients.

TEC

Modeling ionospheric and material biases of dual-frequency GNSS receivers using GPS signals.

RESEARCH & DEVELOPMENT

CIFRE PhD Thesis (Industrial Training through Research Agreement)

We have signed collaborative research program contract with the French school of civil Aviation (ENAC, SIGNAV Lab), we host PhD colleagues and perform research activities on GNSS Signals Processing, Smart receivers, robust and resilient PVT, DFMC SBAS, ionosphere perturbation on GNSS signals…

We have contributed to the following research papers:

  • A Novel Computationally Efficient Galileo E1 OS Acquisition Method for GNSS Software Receiver, (ION GNSS 2012)
    Myriam Foucras, Olivier Julien, Christophe Macabiau, Bertrand Ekambi. A novel computationally efficient Galileo E1 OS acquisition method for GNSS software receiver. ION GNSS 2012, 25th International Technical Meeting of The Satellite Division of the Institute of Navigation, Sep 2012, Nashville, United States. (hal-00938830)
  • An Efficient Strategy for the Acquisition of Weak Galileo E1 OS Signals, (ENC 2013)
    Myriam Foucras, Olivier Julien, Christophe Macabiau, Bertrand Ekambi. An efficient strategy for the acquisition of weak galileo E1 OS signals. ENC 2013, European Navigation Conference, Apr 2013, Vienne, Austria. (hal-00937081)
  • Probability of Secondary Code Acquisition for Multi-Component GNSS Signals, (SIGNALS 2013)
    Myriam Foucras, Bertrand Ekambi, Olivier Julien, Christophe Macabiau. Probability of Secondary Code Acquisition for Multi-Component GNSS Signals. EWGNSS 2013, 6th European Workshop on GNSS Signals and Signal Processing, Dec 2013, Munich, Germany. ⟨hal-00943427⟩
  • Detailed Analysis of the Impact of the Code Doppler on the Acquisition Performance of New GNSS Signals, (ION ITM 2014)
    Myriam Foucras, Olivier Julien, Christophe Macabiau, Bertrand Ekambi. Detailed Analysis of the Impact of the Code Doppler on the Acquisition Performance of New GNSS Signals. ION ITM 2014, International Technical Meeting of The Institute of Navigation, Jan 2014, San Diego, United States. hal-00937060
  • Optimal GNSS Acquisition Parameters when Considering Bit Transitions, (IEEE/ION PLANS 2014)
    Myriam Foucras, Bertrand Ekambi, Fayaz Bacard, Olivier Julien, Christophe Macabiau. Optimal GNSS Acquisition Parameters when Considering Bit Transitions. IEEE/ION PLANS 2014, Position Location and Navigation Symposium, May 2014, Monterey, United States. (hal-00989838)
    DOI: 10.1109/PLANS.2014.6851445
  • Performance Study of FLL Schemes for a Successful Acquisition-to-Tracking Transition, (IEEE/ION PLANS 2014)
    Myriam Foucras, Bertrand Ekambi, Ulrich Ngayap, Jen Yu Li, Olivier Julien, et al.. Performance Study of FLL Schemes for a Successful Acquisition-to-Tracking Transition. IEEE/ION PLANS 2014, Position Location and Navigation Symposium, May 2014, Monterey, United States. (hal-00989788)
    DOI: 10.1109/PLANS.2014.6851414
  • Assessing the Performance of GNSS Signal Acquisition, Inside GNSS, August 2014
    Myriam Foucras, Olivier Julien, Christophe Macabiau, Bertrand Ekambi, Fayaz Bacard, et al.. Assessing the Performance of GNSS Signal Acquisition: New Signals and GPS L1 C/A Code. Inside GNSS, Inside GNSS Media LLC, 2014, pp.68-79. (hal-01171926)
  • Probability of Detection for GNSS Signals with Sign Transitions, IEEE Transactions on Aerospace and Electronic Systems, submitted in August 2014
    M. Foucras, O. Julien, C. Macabiau, B. Ekambi and F. Bacard, « Probability of detection for GNSS signals with sign transitions », IEEE Transactions on Aerospace and Electronic Systems, vol. 52, no. 3, pp. 1296-1308, 2016. DOI: 10.1109/TAES.2016.140316
  • EGNOS Service Performances in Relation with the Elevation Mask of the Monitoring Stations (ENC 2015)
    Conference: European Navigation Conference 2015 (ENC2015) Francois Dufour, Jérémy Chamard, ,Olivier Hugues, Jaron Samson
  • R. Chaggara, C. Paparini, U. Ngayap-Youmbi, B.Duparc. In depth characterization of EGNOS ground stations response to space weather disturbances. International Technical Symposium on Navigation and Timing (ITSNT) 2017, 14-17 Nov 2017, ENAC, Toulouse, France
  • Eustachio Roberto Matera, Axel Javier Garcia Peña, Olivier Julien, Bertrand Ekambi. Characterization Of Pseudo Range Multipath Errors In An Urban Environment. ITSNT 2018, International Technical Symposium on Navigation and Timing, Oct 2018, Toulouse, France. 10.31701/itsnt2018.22.hal-01890371
  • Matera, Eustachio Roberto, Garcia-Pena, Axel, Julien, Olivier, Milner, Carl, Ekambi, Bertrand, « Characterization of Line-of-sight and Non-line-of-sight Pseudorange Multipath Errors in Urban Environment for GPS and Galileo, » Proceedings of the 2019 International Technical Meeting of The Institute of Navigation, Reston, Virginia, January 2019, pp. 177-196. https://doi.org/10.33012/2019.16687
  • Matera, Eustachio Roberto, Garcia-Pena, Axel, Milner, Carl, Ekambi, Bertrand, « Smart Exploitation of Pseudorange and Pseudorange-rate Error Characterization to Improve the PVT Solution, » Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019), Miami, Florida, September 2019, pp. 3959-3984. https://doi.org/10.33012/2019.17109

OUR CUSTOMERS & PARTNERS

OUR CERTIFICATIONS

certification ISO9001
certification EN9100