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AUSPOS Online GPS Processing Service

AUSPOS Online GPS Processing Service. John Manning , John Dawson.Ramesh Govind Geoscience Australia. Australian Online GPS Processing Service (AUSPOS ) Concepts International GPS Service (IGS) Australian Regional GPS Network (ARGN) long baseline precise GPS Processing. Background

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AUSPOS Online GPS Processing Service

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  1. AUSPOS Online GPS Processing Service John Manning , John Dawson.Ramesh Govind Geoscience Australia

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

  3. 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 extensionto GA • services

  4. 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

  5. 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

  6. Relative GPS Positioning • cm level positioning with two receivers • requires existing ground geodetic infrastructure

  7. Absolute GPS Positioning • cm level positioning with one receiver • geodetic infrastructure ‘invisible’ to the user

  8. How it works • International GPS Service (IGS) • worldwide network of permanent GPS receivers • ‘baseline’ from three closest IGS GPS • station to station distances • typically <1000 km, up to 3500 km IGS User GPS IGS IGS

  9. Australian Regional GPS Network (ARGN)

  10. International GPS Service (IGS) Network

  11. } • What do you Submit? • GPS data (RINEX) • Your email address • the height of your GPS antenna • the type of your GPS antenna height

  12. 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 • <10 mm horizontal and 10-20 mm vertical

  13. http://www.ga.gov.au User GPS Data Processing Results Coordinates (email)

  14. AUSPOS Email

  15. AUSPOS Report

  16. AUSPOS Australian Users

  17. AUSPOS Global Users

  18. 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

  19. 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

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