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EDAS differential GPS corrections for Smartphones GRMTF 2019 J. Morán - ESSP SAS 1

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Page 1: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

EDAS differential GPS corrections for Smartphones

GRMTF 2019

J. Morán - ESSP SAS

1

Page 2: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

TABLE OF CONTENTS

26/06/2019 GRMTF 2019 2

EDAS Overview

EDAS Use Cases

EDAS DGPS For Smartphones

Page 3: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

EDAS Overview

26/06/2019 GRMTF 2019 3

Dedicated Infrastructure

Transmission Channel - Internet

Wide range of products, formats and protocols

Robust to GNSS vulnerabilities (jamming, spoofing, masking...)

Network vulnerabilities (hacking threats, coverage, etc.)EGNOS SOL

Page 4: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

EDAS Services

26/06/2019 GRMTF 2019 4

EDAS Service

Type of Data Service Description

OBS & NAV

EGNOSMSG

RTKMSG

DGNSS COR

FORMAT PROTOCOL

Real Time

Service Level 0

Data Filtering SL0

ASN.1 EDAS

Service Level 2

Data FilteringSL2

RTCM3.1 EDAS

SISNET RTCA SISNeT

NtripRTCM 2.xRTCM 3.1

Ntrip(v1, v2)

Archive FTP RINEX, EMS,IONEX…

FTP

Other position techniques enabled by

EDAS DGNSS, RTK

EDAS Proprietary protocol based on

SSL Enhanced Security

EGNOS Message consolidated from all

RIMS Robustness

Ephemeris and EGNOS Messages

request TTFF (A-GNSS)

Page 5: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

TABLE OF CONTENTS

26/06/2019 GRMTF 2019 5

EDAS Overview

EDAS Use Cases

EDAS DGPS For Smartphones

Page 6: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

1

3

4

5

7

7

8

15

Rail

Road

GNSS Algorithms & Test-Beds

Aviation

Maritime

GNSS performance monitoring

Location Based Services (LBS)

Surveying/mapping/agriculture

Some commercial EDAS use cases…

626/06/2019 GRMTF 2019

GNSS Performance Monitoring

• Commercial tools powered by EDAS.

• Real-time and post-processing options.

Tracking of assets/fleet management

• Continuous monitoring of commercial fleets

• Homogeneous augmented solution (Rx independent)

Delivery of navigation services

• EDAS based DGPS service for maritime users

• High accuracy correction services

Access to High quality GNSS data

• Assisted GNSS applications

• Additional stations for correction services

*EDAS Commercial / Professional Active Users Per Segment

Page 7: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

Multiple correction streams:Improved accuracy for mobile apps

26/06/2019 GRMTF 2019 7

DGNSS CorrectionsHorizontal Accuracy : 0.5 - 1m (95%)Coverage: ~ up to 260 km from EGNOS station

RTK MessagesHorizontal Accuracy : < 0.1m (95%)Coverage: ~ up to 50 km from EGNOS station

Consolidated SBAS messageHorizontal Accuracy: 1m (95%)Coverage: ~ Europe (EGNOS OS)

Page 8: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

TABLE OF CONTENTS

26/06/2019 GRMTF 2019 8

EDAS Overview

EDAS Use Cases

EDAS DGPS For Smartphones

Page 9: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

Preliminary Results:The importance of measurements smoothing

26/06/2019 GRMTF 2019 9

No

isy

Co

de

Mea

sure

men

ts

Smo

oth

ing

filt

erre

qu

ired

PVT Solution

Raw

Smoothed (GPS Only)

Raw

Smoothed (GPS Only)

Page 10: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

Raw

Smoothed (GPS Only)

Smoothed (EDAS DGPS)

Smoothed (EGNOS)

Preliminary Results:Precision vs solution type

26/06/2019 GRMTF 2019 10

Solution Type AvailabilityHorizontal Level Vertical Level

Average Standard Deviation 95 Percentile Average Standard Deviation 95 Percentile

Raw 56% 3.13 1.75 6.50 5.08 4.84 14.69

Smoothed (GPS only) 100% 0.58 0.24 0.92 0.94 0.77 2.62

Smoothed (EDAS DGPS) 100% 0.31 0.17 0.59 0.56 0.41 1.40

Smoothed (EGNOS) 100% 0.33 0.16 0.60 0.57 0.43 1.39

Horizontal Precision Analysis (95%)

Smoothed vs Raw: 85% ImprovementEDAS DGPS vs GPS (smoothed): 36 % ImprovementEDAS DGPS vs EGNOS: Similar Performance

* No reference position available for this test numbers included in this table should be only considered for precission assessment

(i.e. no accuracy information provided)

Page 11: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard
Page 12: EDAS differential GPS corrections for Smartphones · Precision vs solution type 26/06/2019 GRMTF 2019 10 Solution Type Availability Horizontal Level Vertical Level Average Standard

www.essp-sas.eu

[email protected]

+34 911 236 555 (H24/7)

http://egnos-user-support.essp-sas.eu

[email protected]

Corporate Video

Thank you!