ENCORE - Enhanced Code Galileo Receiver

Start: 01 January 2010
End: 31 December 2011
Funding: European
Status: Due
Division: Geomatics
Department: Geodesy and Navigation (GEON)
Code: 247939
Web:  http://www.encoreproject.org/

Taking benefit of the new Galileo ranging signals, the ENCORE project aims to develop a low-cost Land Management Application to cover the following needs of the Brazilian market:

  • Geo-referencing : due to 10267/2001 Federal Law, all the 5 billions properties in Brazil must be linked to the Geocentric Reference System for the Americas (Sistema de Referencia Geocéntrico para las Américas SIRGAS), whose objective is the standardisation of South America geodetic systems. All these properties are subject to surveying, which actually do not exist.
  • Urban/rural cadastre : Brazil includes 500 millions of hectares for farming, but one third of them are not properly identified, being occupied informally.   In addition, the other two thirds of the private lands with the corresponding property title present important discrepancies between the available information and the real dimensions of the parcels. This is an important drawback to allow and efficient use of the farmland, an optimised urban planning, and to perform tax collection.

The proposed land management application will cover these Brazil’s needs in terms of geo-referencing and cadastre planning, using a low-cost Enhanced Galileo Code Receiver as baseline. As an example, it will solve the problem of land regularization at the Legal Amazon area of Brazil, enabling a large scale surveying service.

In current GNSS terminals, there is a gap in terms of performances, receiver complexity and price between mass-market and professional devices. Accuracies up to 5-meter are achieved in mass-market GNSS terminals using pseudorange observables. In professional receivers, with high precision requirements, carrier phase measurements are also processed to output the user position with errors below one decimetre, at a cost of higher complexity, price and operational requirements.

Land management applications require precision and accuracy levels from a few to several decimetres that are under-met with current pseudorange-based receiver and over-met with phase observations. This situation leads either in a waste of resources (equipment, time, over-qualified staff), or in lack of accuracy. In this project, it is proposed to fill this gap using the new possibilities of the Galileo ranging signals, in particular E5 AltBOC and L1 MBOC. The Enhanced Galileo Code receiver will use them to generate the best possible pseudorange measurements, which are the inputs of the positioning algorithms. This approach reduces the cost of the end-user device, helping the rapid penetration of Galileo technology outside Europe.


  • Deimos Engenharia (Leader) (Lisbon, Portugal)
  • Deimos Space (Madrid, Spain)
  • The University of Nottingham (Nottingham, United Kingdom)
  • UNESP (Sao Paulo, Brasil)
  • OrbiSat (Sao Jose dos Campos, Brasil)
  • Santiago & Cintra (Sao Paulo, Brasil)
  • MundoGeo (Curitiba, Brasil)


  • Deimos-Space