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ATEC ITS FRANCE
January 22 & 23, 2020
Mobility: Projects and Achievements

 

TECHNOLOGICAL TOOLS

Scientific and Technical Methods

EN16803 – European geolocation reference system to boost mobility within the Smart City

 

What’s at stake

The “Smart City” addresses mobility from several angles. Many applications need to monitor their positioning continuously with greater precision and reliability:

Regulated traffic

Electronic toll collection, parking, access control, carpooling, etc.

Autonomous Vehicles

Driving automation (ADAS +), Autonomous shuttles, road robots

Public transport

SAEV-IV trams, Intermodal, Driving rules, etc.

Even if the hybridization of sensors is often necessary, only GNSS receivers are able to offer an absolute position, anywhere and at any time.

 

 

State of the art

Geolocation in urban areas has long been considered to be unusable or unaffordable. The propagation of satellite signals is disturbed by numerous undesirable phenomena such as masking and reflections.

The tests undertaken by professionals lead to results that both imprecise and unstable. This view is reinforced by simulation tools unable to provide measurements correctly representing of reality.

Recently however, the market has been shaken up by the arrival of new satellite constellations (GALILEO), very efficient and very inexpensive receivers, augmentation services (EGNOS, PPP / RTK) and evaluation benchmarks (EN16803).

 

 

Methodologies

More than just another standard, the proposed methodologies shed new light on the differences in receiver performance linked to the urban environment. The phenomena are better understood and therefore better processed. The architectures of navigation systems can be refined with the use of less expensive sensors and the judicious use of hybridization algorithms. Specific navigation maps aid trajectory control for error anticipation and mitigation.

Test benches are becoming affordable for SMEs and above all, they perfectly reconstruct environments specific to each application. GNSS signals and sensor measurements are reproduced with great fidelity, supplying data for the geolocation terminals. The quality of the results accelerates projects developing mobility.

 

 

Results

The methodologies associated with standard EN16803 provide answers to the following questions in particular:

  • how to assess and classify the performance of candidate terminals in an objective and reproducible manner
  • how to significantly improve terminal performance by refining algorithms and accessing new data services, such as PPP/NRTK corrections or navigation maps (HDMAP)
  • how to raise the level of reliability of terminals with well-chosen and well-implemented hybridizations
  • how to reduce terminal costs by taking advantage of the automotive components library

Two case studies will be put forward:

  • geolocation as a primary source of data for operating system assistance for tramway operators.
  • Access control of urban areas using geolocation;

 

Conclusions

With the test methodologies adopted by EN16803, new activities are emerging making new features possible:

  • Consulting and engineering of hybridization of on-board sensors
  • Development of replay scenarios for digitized data in order to perform testing in R&D laboratories
  • Detailed characterization of the GNSS environment for navigation maps

 

Authors

Miguel ORTIZ
Geolocation research engineer at the GEOLOC Laboratory of IFSTTAR
Head of the European standardization group TC5/WG1 within CEN/CENELEC
Expert within COST TU1302 SaPPART

Xavier LEBLAN
Director of the Geolocation Testing Laboratory – GUIDE
Active member of the European standardization group TC5/WG1 within CEN/CENELEC

Christelle DULERY
Engineer, Navigation/Location signal processing
GNSS standardization and metrology project manager.