© DEIMOS Engenharia and ENCORE consortium, All Rights Reserved ENCORE ENhanced COde Galileo REceiver for land management in Brazil Ignacio Tourné European

© DEIMOS Engenharia and ENCORE consortium, All Rights Reserved

ENCOREENCOREENENhanced hanced COCOde Galileo de Galileo REREceiverceiverfor land management in Brazilfor land management in Brazil

Ignacio TournéIgnacio TournéEuropean GNSS Applications In H2020

4 February 2014, Prague

<Conference Name and Session> © <Company Name>, All Rights Reserved

• Deimos Engenharia is the Portuguese branch of ELECNOR-

Deimos, a space company with 35 M€ annual turnover and more

than 300 engineers

• Relevant Contribution to the majority of ESA Programmes

Company presentation

2

• Areas of activity:

• Mission analysis

• GNSS syst and apps

• On board software

• Ground segment

• Design, integrate and operate EO

satellites: Deimos-1 and 2

European GNSS Applications In H2020 4 February 2014, Prague © DEIMOS Engenharia, All Rights Reserved

ENCORE in brief:

• Taking benefit of the new Galileo ranging signals, ENCORE project developed a low-cost

Land Management Application to cover Brazilian needs in terms of geo-referencing and

cadastre planning.

• Seventh Framework Programme (FP7/2007-2013) under the GNSS Supervisory

Authority grant agreement FP7-GALILEO-2008-GSA-1 Proj. 247939

– Started in February 2010

– Final Review in June 2012

• The ENCORE project lead by DEIMOS Engenharia (Portugal) in partnership with:

Institute of Geomatics, DEIMOS Space (Spain), University of Nottingham (UK),

Universidade Estadual Paulista (Brazil), Orbisat da Amazônia Indústria e

Aerolevantamento (Brazil), Santiago & Cintra Importação e Exportaçao Ltda

(Brazil) and Editora Mundo GEO ltda (Brazil).


4

ENCORE

WP 1000 DME WP 2000 S&C WP 3000 DME WP 4000 S&C WP 5000 GEO WP 6000 DME

WP 2100 S&C WP 3100 UNESP WP 4100 S&C WP 5100 GEO

WP 2200 S&C WP 3200 DME WP 4200 S&C WP 5200 GEO

WP 3300 DMS WP 4300 S&C WP 5300 GEO

WP 3400 DME WP 4400 UNESP WP 5400 UNESP

WP 3500 UNOTT

Market Analysis and Sizing

Supplying Infrastructure

ManagementAnalysis of

Regional Context

State-of-the-art Analysis

Application Development

Academic & Institutional

dissemination

Coordination and Suppot to EC/GSA

Dissemination and Awareness

Project web page

General public and GNSS community

Potential user communities

Business Potential Demonstration

Exploitation and Business Plan

Market Penetration and Galileo introduction

Legal, Regulatory & Standarisation

Aspects

On-field land management demonstration

Validation and Testing

Implementation

Design

Requirements Analysis

ENCORE Work Breakdown Structure


Presentation Outline

•Introduction and Motivation

•System Overview and Innovation

•Results

•Conclusions


• ENCORE Project objectives:– Introduction of Galileo terminals in the Brazilian market for land

management applications (geo-referencing and cadastre), with possible future expansion to other countries and related applications

– Stimulating the participation of international entities from Brazil

– Development of a high-precision and low-cost land management application based on Galileo signals

Introduction and MotivationIntroduction and Motivation



• Land Management in Brazil

– The Brazilian market lacks information mainly in terms of geo-

referencing of rural real estates (10.267/2001 Federal Law)

– There is an increasing demand for topographical surveys of

rural areas

– Commercially available professional GPS receivers are limited

and expensive. The development of solutions tailored to the

Brazilian case is required and the technology involving Galileo

receivers is shown to be adequate to this purpose.


• Brazilian Technical Norm Position accuracy

– Rural properties require horizontal position error < 0,5m and

vertical < 1,5m


Positioning Solution Horizontal Accuracy

(1 )C1 – Basic Support / Geo-referencing ≤ 0,10 mC2 - Immediate Support/ Geo-referencing ≤ 0,20 mC4 - Geo-referencing ≤ 0,50 mC5 - Geo-referencing for natural limits (e.g. river)

≤ 2,00 m

C7 - Geo-referencing for restricted points (e.g. dense vegetation)

Method dependent



• Other potential applications

– Urban property registration

– Mapping of urban infrastructure (e.g. basic sanitation,

communications) for Geographic Information Systems (GIS)

– Applications supporting the planning and decision-making in

urban environment


• Introduction and Motivation

• System Overview and Innovation

• Results

– Base-band processing

– Positioning

• Conclusions


Architecture Overview

System Overview and Innovation


Receiver Prototype


Test Workstation

Host Computer

RF Front-endAntenna cable

Host Computer


Application SW



• Innovation in the project

– Use Galileo Pseudorange Observables from Galileo

• E5 AltBOC and E1 CBOC for low tracking & multipath errors;

– Fill the gap for land management applications using Galileo

• Intermediate accuracies between Professional (cm) and Mass

market (meter) receivers, with lower complexity & cost.

Accuracy Complexity PriceMASS-MARKET

RECEIVERS

Pseudorange basedLow (m) Low Low

PROFESSIONAL RECEIVERS

Carrier phase basedVery High (cm) High High

ENCORE High (few dm) Low - Medium Medium



• Positioning Strategy is inspired on Precise Point Positioning

• Although the receiver is a dual frequency, the positioning algorithm

is not based on iono-free combination (E1 is too noisy);

• Use E5 AltBOC code observables (centimeter errors) with:– Specific models to consider ionospheric variaton & receiver biases– Satellite orbits & clocks from IGS and tropo from INPE

• Real Time (RT) and Post Process (PP) position determination

GNSS Positioning

Phase Code

1 frequency receiver 2 frequency receiver

Differential Absolute

Real-Time Post-ProcessingReal-Time Post-Processing






•Results

•Conclusions


Results

• Tracking Results (1/2) : Test setup


• Tracking Results (2/2) : Accuracy

– Overall agreement of theoretical and measured data

• E1 code tracking error typically below 20 cm (>44dBHz)

• E5 code tracking error typically below 1.5 cm (>47dBHz)

40 45 50 550

5

10

15

20

25

30

C/N0 [dB.Hz]

code

pha

se e

rror

[cm

]

theoretical

measured

40 45 50 550

0.5

1

1.5

2

2.5

C/N0 [dB.Hz]

code

pha

se e

rror

[cm

]

theoretical

measured

E5 AltBOCE1 CBOC

Results


19

Results

• Positioning results

– Results of the combination of E1 CBOC / E5 AltBOC indicate cm-level

[horizontal] to dm-level [vertical] positioning capability in open areas.

– Results of the combination of E1 CBOC / E5 AltBOC indicate low dm-level

[horizontal] to dm-level [vertical] positioning capability in moderate

tree covered areas.

– Results indicate ENCORE can be used for surveying





•Results

•Conclusions


• ENCORE project explores Galileo potential for surveying:

– Developed an application within the Brazilian context:

• Prototype of receiver: RF (ICs) and DSP (FGPA) stage

• Defined positioning algorithms and application software using

an innovative approach, harvesting AltBOC potential

• Tests with Spirent simulator and synthetic RINEX data revealed

very successful performances

– Implemented business plan for potential investors

– Disseminated results in dedicated workshop,

conferences, magazines, newspapers and internet

– Promising results, showing Galileo can bring high

benefits to the surveying community

– ENCORE project is considered a success!

Conclusions

© DEIMOS Engenharia and ENCORE consortium, All Rights Reserved

Contacts:[email protected]

[email protected]

22

THANK YOU!

Documents

© DEIMOS Engenharia and ENCORE consortium, All Rights Reserved ENCORE ENhanced COde Galileo REceiver for land management in Brazil Ignacio Tourné European