Leica GPS SpiderSetting the Standardfor GPS Networks
Mark Burbidge MRICS MinstCESGNSS Network Manager – Leica Geosystems
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First 24/7 commercial national GPS network correction service for Great Britain
Available since December 05
Offering a continuous accurate, reliable, robust, traceable and repeatable national GNSS network solution, based on a common datum
Services include: RTK & DGPS Solutions. Available to everyone with a DGPS/RTK receiver
Internet positioning in the field via Mobile GPRS (General Packet Radio Service)
Leica SmartNet Technology
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Leica SmartNet - Reference Stations
Ordnance Survey (OS) currently have a national network of over 90 reference stations called OS Net
Through commercial partnership, OS have provided Leica Geosystems with raw data feed from OS Net
Ordnance Survey (OS) intend to maintain and add further stations
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Leica intend to add value with the deployment of a further 40+ stations
Leica intend to add value by increasing the opportunities for a full GNSS (Global Navigation Satellite System) network. Tracking all available signals from GPS, GLONASS and the future Galileo
Strengthening the network increases the survey quality while providing redundancy, accuracy, density and reliability
Leica SmartNet – Strengthening the Network
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Leica SmartNet - Reference Station Comms
Receiver Communication:
NTRIP raw data feed from OS Net
Direct Serial
Modem, Analog or ISDN
TCP/IP (LAN, Internet, NTRIP)
Receiver Types:
Leica System 500
Leica System 1200
3rd party receivers and raw data formats
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Using an array of reference stations
Real time Network processing
Powerful zero-difference algorithm
Master Auxiliary Concept (MAC) Providing Network RTK Corrections in Standard RTCM V3.0 Format
Modelled Corrections together with a traceable set of multiple reference stations
CM RTK accuracy
Sub metre DGPS
Leica SmartNet – Spider Network Software
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Leica SmartNet – Network RTK
Increased Coverage
Improved availability
Best Reliability
Faster Rover initialisations
Consistent high accuracy
Higher productivity
No local base station required
Working on a common datum
BENEFITS
Arrive on site, switch on and start working!
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Leica SmartNet – Network RTK Corrections
SpiderNET Corrections - MAX :
Network RTK Standard RTCM 3.0 Format with Leica Master-Auxiliary concept
Ideal for broadcast transmission
For Rover to achieve best performance
Optimised bandwidth to minimise transmission cost
Always best cell of fixed network sites. Automatic reselection when rover
moves awayCommunication: Mobile Internet GPRS GSM Access Router Landline & Wireless TCP/IP NTRIP Caster & Server
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SpiderNET Corrections – i-MAX :
i - Individualsed Network RTK
Optimised for each rover location
Provided in standard baseline RTK formats (RTCM V2.3, Leica)
Ideal for legacy receivers that cannot use MAX
Always best cell of fixed network sites
Automatic reselection when rover moves away
Leica SmartNet – Network RTK Corrections
Communication: Mobile Internet GPRS GSM Access Router Landline & Wireless TCP/IP NTRIP Caster & Server
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Network Transmission Concept
One Master Reference Station
Some Auxiliary Reference Stations One Network Cell
Rover
Network Processing Facility
Auxiliary Reference Station C
Auxiliary Reference Station D
Auxiliary Reference Station B
Master Reference Station A
Auxiliary Reference Station X
Correction Differences of the Aux. relative to
the Master
Network Estimation process incl. Ambiguity Resolution, for Master and of Correction Differences for
each Auxiliary.
Receiving Corrections for
Master and Correction
Differences for the Auxiliary ...
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SpiderNET Corrections – DGPS:
Provided in standard RTCM 9, 2 v2.3 formats
Ideal for many DGPS devices
Leica SmartNet – Network DGPS Corrections
Communication: Mobile Internet GPRS GSM Landline & Wireless TCP/IP NTRIP Caster & Server
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Leica SmartNet – Control Centre Support
Real time view of Rover user access
Field support for users anywhere in the network (GB)
Complete Rover status monitoring
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Independent SmartNet Quality Monitoring
In addition, Leica have partnered with the internationally recognised Institute of Engineering Surveying and Space Geodesy
at the University of Nottingham
IESSG will provide an exclusive and independent Quality Assurance service, adding additional value and security to subscribed users of
SmartNet
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Safe, Secure, Reliable Infrastructure
Leica SmartNet servers are located at a high security, co-location data centre in London Docklands
Secure RTK Service access control
Name & Password via GPUID
Telephone number
TCP/IP address
NTRIP Authentication
Full system redundancy with backup servers are located at the data centre
Full mechanism to seamlessly switch to a backup system is immediate. Plus on-site support/monitoring
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SmartNet Website - Available May
Station information & health Network Quality Monitoring Nottingham University QA link GNSS QC Quality Assurance Customer testimonials
Active map of stations Rinex downloads Raw data coordinate processing
facility to nearest reference stations
Customer testimonials
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New GNSS Receiver - GPS & GLONASS
Add Glonass to the world’s best-performing GPS system
Reduce downtime and benefit from higher productivity
Rise to the next level with GNSS – SmartTrack+ & SmartCheck+
Includes L2C
New Phase Multipath Mitigation Technology
1200 models upgradeable
Upgrade paths to future GPS L5 & Galileo signals
72 Channel receiver
Future Proof technology!
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Leica SmartNet – Positioning Services
Building Construction Utilities Sector
Emergency Services
GPS Monitoring
Precise VehicleTracking
Land Surveying
Machine Control
Port Operations
Agriculture
Plus much more business opportunities for end users
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Finally - How much does SmartNet Cost?
Stand Offer 1 month free (13 months subscription)
Annual Subscription Cost:
RTK Low rate user (40hrs p/m) £1,200RTK Unlimited access £2,000DGPS Low rate user (40hrs p/m) £350DGPS Unlimited Access £750Multiple user discounts available
GPRS Comms Costs
Typical contract for 250mb £20-25 p/m(more than enough for 7 days a week surveying)
Web Site Rinex Download
1 sec Negotiable15/30 sec FOC
Leica GPS SpiderSetting the Standardfor GPS Networks
Thank You