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AUSPOS Online GPS Processing Service

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... GPS Positioning cm level positioning with two receivers requires existing ground geodetic infrastructure Absolute GPS Positioning cm level ... – PowerPoint PPT presentation

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Title: AUSPOS Online GPS Processing Service


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 extension to 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 lt1000 km, up to 3500 km

IGS
IGS
User GPS
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
  • lt10 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
(No Transcript)
17
AUSPOS Australian Users
18
AUSPOS Global Users
19
  • 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

20
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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