victorian update cgsic july 2006 peter ramm peter.ramm@dse.vic.gov.au

Victorian Update

CGSICJuly 2006Peter Rammpeter.ramm@dse.vic.gov.au

Outline

• Introduction• Current Status• Current Issues• Future

Introduction

Victoria

Area < 3% of Australia

Population 24.9 % of

Australia)

2004 CGSIC Report

• 21 Sep 2004 Long Beach• Issues

– Policy Framework– Location Based Services Project– Implications for Victoria

• Realisation of the datum• Reg 13

Current Status

Policy Framework

• Continues to be important– Provides the policy context for

positioning infrastructure– Within Policy, positioning is becoming

more important• Facilitates other activities• Exposes quality issue in other spatial DB• Coordination of infrastructure

LBS

• Planned to have about 0.5 m accuracy real time solution over Vic– Delivered Dec 2004

Implications For Vic

• For all practical purposes GPSnet is the realisation of the geodetic datum in Vic

• Now have Reg 13 Certificates on 18 Base Stations

Victorian GPS Base Station Network

Comparison

Sep 2004 Jul 2006

Number of Base Stations

19 24(5 more scheduled for installation in

next year)

RTK (single Base) 7 Radio only 19 All Internet7 Radio still

DGPS (Sub Metre) Planned Established and State Wide

Networked RTK (2 cm) None 8

Current Issues

Current Issues

• Networks solutions not quite there– Inter Station Distance too small– Poor understanding of how they work– Low sat numbers a problem at times

• Driving changes in spatial data– Increased spatial accuracy in mapping

• Coordination • Multiple software systems on the one network• Hardware Costs down, but operators still have high

costs• CRC SI• NCRIS

The Future

The Future

• State wide• Real time• 2-3 cm Horiz

Accuracy• 3-5 cm Vertical

Accuracy

Relevant papers (Vic Priorities)

• Denham et al Contemporary Position and Navigation Needs of Precision Agriculture and Victoria’s GPSnet CORS Network

• Gordini et al Testing and Evaluation of a GPS VCORS Network for Real Time Centimetric Positioning – The Victorian GPSnet

• Hale et al validating a Model For CORS Network Management

• Yousufi et al Temporal variations of the Victoria GPSnet Base Stations

• Zhang et al Sparse or Dense: Challenges of Australian Network RTK

• Timeframes a problem

Question?