Transcript Automatic Person Location Technologies & Solutions with TETRA

Automatic Person Location
Technologies & Solutions with TETRA
Dr. Emanuele Algieri
International Business Development Director
Sepura
Market Requirement – APLS
•
FCC E911 Mandate in the US
Call centres
Terminal or Network implemented solutions
50 - 100 metre accuracy for at least 67% of cases
150 - 300 metre accuracy for at least 95% of cases
•
EU E112 Mandate in Europe
No defined accuracy specified !
•
Many Blue Light Forces mandating APLS
Market Requirement - Public
Safety
• Specifically for: -
• Safety of the police officer – ability to locate
officer in an emergency situation and react
accordingly
• Resource (person or vehicle) management
Solution Influencing Factors
• Price
• Accuracy versus coverage
Requirements differ for non emergency
Varying locations - in city, in building
• Ergonomics
• Power consumption
• Timing of solution to reach the market
• Standard solution or proprietary ?
• Can the solution be supported by TETRA ?
Network support and bandwidth requirements
Command & Control
Requirements
• Effective management
• Requirements differ from AVLS
• User needs to feel unthreatened by APLS
• Updated positioning details fixed to various duties
• Linking of various systems/databases to provide
officer with advance warning of possible dangers
Resource management
• Know where someone is: save LIFE.
• Better allocation of resources, prompt
reaction to an Emergency: save TIME.
• Better Control of the fleet: save MONEY.
Location Solutions & Performance
• Low accuracy, low cost solutions
Time difference of arrival
Enhanced observed time difference
• Medium accuracy, medium cost solutions
Standard GPS
Assisted GPS
Low signal strength GPS
• High accuracy, high cost solutions
Differential GPS
Solutions combinations
Standard GPS - medium accuracy
TETRA
Network
TETRA
Gateway
SDS
C&C
Server
GPS
GIS or
Mapping
Application
GIS or
Mapping
Application
Data over network - Size of
problem!
• Typically, position report messages could
carry some or all of the following:
Date, Time, Latitude, Longitude, Altitude, Speed, Heading,
Fix type, Confidence Level, Status, Fix Reason, Terminal
ID, User Defined Field.
• Amount of message traffic generated by
APLS systems is much larger than for AVLS
Requires sophisticated filtering at command &control
TETRA services for APLS
• No specification for data amount or structure
of GPS messages
• TETRA services allow use of SDS messaging
for transmission of GPS data:EN 300 392-2: TETRA (Voice plus Data (V+D), part 2: Air Interface,
v2.3.2
SDS4 and SDS-TL delivers variable length messages to 2047 bits(255
bytes)
• Working papers:WG101161, Efficient transfer of location information over TETRA
networks, UK Home office, Oct 2001
WG103020, Study into TETRA SDS
WG303040, Transfer of location information
Sepura (and others) presenting papers to WG3
Standardisation of location report messages and associated
commands
Future of APLS & TETRA
Terminals
• Technology Influenced Solutions
• Continuing integration of IC’s and components
enables space saving in handsets and is an
opportunity to integrate location devices like GPS.
• With the introduction of TETRA2 (2005+) there could
be an opportunity for the network based location
solutions as data rates increase over carriers.
• The European Galileo system should be operational
by 2008 and this is supposed to perform better than
GPS.
Estimation of Future Location
High Quality
System Performance
Receiver
Clear Sky
Under Foliage
High Quality Hand Held
Receiver
Wooden
Building
LSS GPS
Urban Canyon
Galileo
L1 + L2 Frequency
Single Storey
Brick Building
L1, L2 + L5
Frequency
(+ Galileo?)
Multi Storey
Concrete building
Other Sensors – e.g. Gyroscope, Accelerometers
……………
GPSIII
(+
Galileo?)
Underground?
2002
2003 2004 2005 2006 2007 2008
2010………………………….. 2015 2020 2030
Sepura APLS over TETRA
networks
• 2000- GPS connected to SEPURA
SRP1000 for Ambleside Mountain
Rescue Project
• 2002 - Remote GPS Unit
demonstrated:
A remote speaker microphone with built-in GPS
receiver, provides a unique solution for provision
of personal location.
Sepura APLS update
• This year – SRP2000 sGPS
• The worlds first fully working TETRA
handportable with integrated GPS.
• Low signal strength operation for urban
canyon operation.
• Offering tangible benefits by providing user
safety and resource management
Conclusions
• Many different location technologies
available
• Technology for both location based and
TETRA is rapidly changing
• Low Signal Strength GPS currently provides
the best fit for public safety requirements.
• Sepura has an ongoing programme to
identify solutions and bring these quickly to
market
MANY THANKS
• Any Questions ?
• Contact details:• Dr Emanuele Algieri,
• Int. Business Dev. Director, Sepura Ltd
• +44 (0)7710 738122
• email: [email protected]