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