Airports
Air Traffic Management
EGNOS for Mapping
Mark Scott
Helios
7th May 2011
Space
Telecoms
Maritime
Rail
www.askhelios.com
Introduction
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What is EGNOS?
Limitations of EGNOS and how they can be overcome
Markets related to the surveying domain
Beyond EGNOS
Our survey – emerging results
Topics for discussion in the workshops
What is EGNOS?
• Wide area differential GPS (SBAS)
• Operating using geostationary satellites
• Aimed to provide:
• Accuracy
• Availability
• Integrity
• Continuity
• Is used with GPS (and GLONASS)
• Is compatible other wide area DGPS systems
including WAAS, MSAS and GAGAN
Satellite-based augmentation system fundamentals
Indicated location
True location
Satellite broadcasts:
1) Vector correction
2) Use/don’t use
Atmospheric
effects
(x,y,z)
(x,y,z)
Reference stations
(RIMS)
(x,y,z)
Master Control Centre
(MCC)
EGNOS coverage
• EGNOS provides a consistent
level of position accuracy
throughout most of Europe
(metre accuracy)
• EGNOS corrections can be
received via different means:
• directly via EGNOS satellites
without any communication
costs
• via terrestrial
communication means such
as internet or cellular
networks, thanks to EDAS,
the EGNOS Data Access
Service
(compatible with GLONASS)
EGNOS offers three basic services
• Open Service, available free to the public for massmarket receivers and common user applications
• Safety of Life Service, for safety-critical transport
applications, namely in civil aviation - this service
provides enhanced and guaranteed performance and
features an integrity warning system
(Certified on 2nd March 2011)
• EGNOS Data Access Service (EDAS), offered on a
controlled access basis (e.g. through Internet or mobile
phones) to customers who require enhanced
performance for professional use (beta testing)
Limitations of EGNOS
• It is not well known by all users of GNSS
• The availability of the signal
• EGNOS are at fixed locations, and are at lower elevations the
further north you go
• EDAS can overcome these
availability issues
Line of sight
EDAS fundamentals
• EDAS (EGNOS Data Access Service) enables users to
obtain
• EGNOS corrections without being in sight of the satellites
• Local RIMS data in RTCM format
http://www.gsa.europa.eu/go/egnos/edas
EDAS on the way – Plug in for free
EGNOS and Mapping free accuracy, widely available
• GNSS is widely used for Mapping by organisations such
as utility companies, regional and local authorities
Worldwide market growth in terms of GNSS devices and
software sales for Mapping and GIS solutions (b €*)
European
market
EGNOS
market
Now EGNOS can contribute in growing the use of GNSS in real time
10
Many devices are EGNOS enabled…………
NOMAD 900G Series
Zeno 10 & 15
GMS-2 Pro
MobileMapper100
GIR1600 Differential GPS
Receiver
SXBlue Mapper 200, 400
& 800
11
….these devices are out there.
You’re using them.
How is the EGNOS feature
performing in different
situations?
Summary
EGNOS is…
…an effective option for a wide range of
mapping applications with metre accuracy
…free; it does not require installation of
hardware nor ongoing subscriptions
…in most of the new GNSS devices
…covers the majority of Europe
…permitting real time positioning
…providing system integrity, supplying
information on the reliability of GPS signals
EDAS is…
…also receivable by terrestrial communication
means, (e.g., internet or GPRS)
Airports
Air Traffic Management
Beyond EGNOS
Space
Telecoms
Maritime
Rail
www.askhelios.com
Europe needs Galileo
• Galileo will ensure the independence of Europe in a sector that has
become critical for business
• Prevent businesses and people using satnav applications from suffering
from unavailability or reduced precision of GPS
• In 2009, already 6-7% of EU’s GDP or €800bn relied on satellite
navigation through positioning or timing applications
• Foster the know-how and employment of people in space,
receivers and applications in Europe
The European GNSS Programmes
Europe needs Galileo
Galileo will improve the overall availability and coverage of
GNSS signals
• Precision : in a combined GPS-Galileo use, the higher combined
number of satellites available to the user will offer higher
precision. This will open the door to new applications requiring
high precision
• Availability/Coverage : The high number of satellites will improve
the availability of the signals in high-rise cities, where buildings
can obstruct signals from satellites that are too low on the horizon
• Coverage : Galileo will provide better coverage at high latitudes
than GPS, thanks to the location and inclination of the satellites.
This will be particularly interesting for Northern Europe
The European GNSS Programmes
Galileo implementation plan
In order for Galileo to be recognised
by the downstream market as a
satellite navigation system of choice
it is key to deliver early services as
soon as 2014/2015
Full Operational Capability
All services, 30 satellites
2019/2020
Initial Operational Capability
Early Services for OS, SAR, PRS
18 satellites
2014/2015
In-Orbit Validation
4 IOV satellites plus ground segment
2011/2012
Galileo System Testbed v2
2 initial test satellites
2005
Galileo System Testbed v1
Validation of critical algorithms
2003
16
4 May, 2011
The European GNSS Programmes
Supporting the markets
• The EC released its Applications Action Plan in June
2010, with 24 action points to help the industry reap
the benefits of new and improved satellite navigation
applications
The European GNSS Programmes
Airports
Our survey – emerging
results
Air Traffic Management
Space
Telecoms
Maritime
Rail
www.askhelios.com
Emerging survey results
• Based on
• 33 responses covering 21 different countries
• Survey highlights
• What networks do you use?
Others
17%
Own
network
12%
DGPS
29%
RTK
42%
Real-time or post-processing?
Postprocessing
45%
Real-time
55%
Emerging survey results
• Survey highlights
• Do you face white spots?
No
39%
Yes
61%
If so, where?
Places not
covered by
Places not
covered by free networks
32%
paid networks
50%
Urban areas
Active disturbance factors
Places not covered by GPRS
Narrow streets
White spots in GSM network
Emerging survey results
•
Are you familiar with EGNOS?
Do you use EGNOS?
No
30%
Yes
29%
No
71%
Yes
70%
•
For those not currently
using it would you
consider it in the future?
No
29%
Yes
71%
Emerging survey results
•
•
Do you think EGNOS could be used as an
alternative to the installation of new
reference stations for service providers
in the effort to extend their network
respectively to fill white spots?
Would an affordable entry precision
solution (low-cost receiver, free of
charge signal, good availability)that
offers a real-time metre accuracy all
over Europe be interesting for your
business?
Yes
44%
No
56%
No
33%
Yes
67%
Survey results
• Summary
• There appears to be demand for EGNOS
Some are using it already
° The majority of respondents are familiar with it
°
• It can help to solve some of the issues of availability and
accuracy (at the metre level)
• It is not useful for those requiring cm accuracy
Please help us by completing the survey to ensure the results are as
useful as possible
• Visit http://egnos-portal.gsa.europa.eu/users/mapping
• Click on ‘Go to survey’ at the bottom of the page
Questions and topics for discussion……
• Survey highlights
• Are these the results that you expected?
• What positioning services are currently available to
you?
• Post processing
• Real time
• Can EGNOS be of benefit to you?
• Who is currently using EGNOS?
• Have you experienced problems using EGNOS?
• What are the problems and how serious are they?
• Would you be interested in receiving EGNOS accuracy
over GPRS or wifi?
Airports
Air Traffic Management
Thank you for your attention
Mark Scott
mark.scott@askhelios.com
Space
Telecoms
Maritime
Rail
www.askhelios.com