AUSPOS Online GPS Processing Service

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AUSPOS Online GPS Processing Service

• John Manning , John Dawson.Ramesh Govind
• Geoscience Australia

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• Australian Online GPS Processing Service (AUSPOS)
• Concepts
• International GPS Service (IGS)
• Australian Regional GPS Network (ARGN)
• long baseline precise GPS Processing

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• Background
• Geoscience Australia (GA) increasingly was
  undertaking GPS processing in the national
  interest for
• - defense, government agencies, International
• obligations,
• International groups providing online GPS
• processing services
• - ITRF coordinates only
• - potential for confusion in Australia, ie. GDA94
  versus ITRF
• Internet based service logical extension to GA
• services

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• Internet web application
• users submit geodetic quality GPS via web-
• browser
• rapid turn-around precise positions via email
• cm level coordinates anywhere in the World!
• position quality depends on data
  quantity/quality
• local datum within Australia (GDA94)
• ITRF coordinates outside of Australia
• FREE service

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AUSPOS

• Produces GDA and ITRF positions as a free service
• Preserves National datum using tectonic plate
  model back to 1 January 1994
• Application is world wide

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Relative GPS Positioning cm level positioning
with two receivers requires existing ground
geodetic infrastructure
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Absolute GPS Positioning cm level positioning
with one receiver geodetic infrastructure
invisible to the user
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• How it works
• International GPS Service (IGS)
• worldwide network of permanent GPS receivers
• baseline from three closest IGS GPS
• station to station distances
• typically lt1000 km, up to 3500 km

IGS
IGS
User GPS
IGS
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Australian Regional GPS Network (ARGN)
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International GPS Service (IGS) Network
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• What do you Submit?
• GPS data (RINEX)
• Your email address
• the height of your GPS antenna
• the type of your GPS antenna

height
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• Speed and accuracy
• 6 hour data file
• results delivered in 3 minutes
• 20 mm horizontal, 50 mm vertical
• 24 hour data file
• results delivered in 15 minutes
• lt10 mm horizontal and 10-20 mm vertical

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http//www.ga.gov.au
User GPS Data
Processing Results Coordinates (email)
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AUSPOS Email
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AUSPOS Report
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(No Transcript)
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AUSPOS Australian Users
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AUSPOS Global Users
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• AUSPOS Applications
• DGPS reference station positioning
• Remote GPS station positioning
• Ultra-long GPS baseline positioning
• GPS connections to IGS and ARGN stations
• High accuracy vertical GPS positioning
• In the field high-accuracy processing
• GPS network quality control

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Internet References GA home page ?
www.ga.gov.au GA Geodesy home page ?
www.auslig.gov.au/geodesy/newhome.htm AUSPOS
home page ? www.auslig.gov.au/geodesy/sgc/wwwgps
IGS home page ? igscb.jpl.nasa.gov