the use of gnss in sweden and the national cors network …...2004-01-15 2005-01-15 2006-01-15...
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The Use of GNSS in Sweden and the National CORS Network SWEPOS
Mikael LILJE, Peter WIKLUND, Gunnar HEDLINGLantmäteriet, Sweden
(the Swedish mapping, cadastral and land registration authority)
How it started
SWEPOS was designed and established as a collaboration between
• Lantmäteriet
• Onsala Space Observatory
• Swedish National Research and Testing Institute
1991
1992
1994
1995
1995-99
2000-
1st generation SWEPOS network
The 21 stations are mounted on bedrock and have redundant equipment for GNSS-observations, communications, power supply etc.
Vilhelmina
Kiruna
Onsala
2nd generation SWEPOS network
The 2nd generation network consist of a densification (baselines ~70 km), established between the years 2002-2009
The 2nd generation network also includes a densification (15-30 km), at a number of larger construction projects as new transportation infrastructure and new city location
2
3
4
5
1
3rd generation SWEPOS 2011 -
During recent years many users have requested improvements especially in the vertical position uncertainty
The 3rd generation SWEPOS network will be an almost nation-wide densification with in-between distances of ~35 km
Within 4-5 years further improvements with new satellite signals and systems.
SWEPOS Stations
5 are included in the IGS-network
7 are included in the EPN-network (will increase to 27 sites 2014)
41 class A stations 260 class B stations
SWEPOS control centre
• Surveillance of CORS /GNSS- stations, data communication, electricity and backup power, temperature.
• Customer support
• Problem solving
• Quality control of data
SWEPOS services
• Post processing data (RINEX-data)• Virtual RINEX-data
• SWEPOS Automatic calculation service
• Real time services- Network-DGNSS–service- Network-RTK–service
• SWEPOS-website- Coordinate transformation- Satellite prediction- monitor stations- Ionosphere monitor
SWEPOS Network-DGNSS service
• 3–4 dm accuracy
• Correction data for GPS and GLONASS• Connection to the service via GSM or Mobile Internet
• Data format RTCM 2.3
Network-DGNSS service, user fees:
• Unlimited data amount:
€550 /con/year +GSM
SWEPOS Network-RTK service
• Centimeter accuracy
• Correction data for GPS and GLONASS• Connection to the service via GSM or Mobile Internet
• Data format RTCM 3.0 (and RTCM 2.3)
Network-RTK service, user fees:
A. Unlimited data amount:
€1600 /con./year +GSM
B. Down-loaded data:
€550 /con/year + €0,5 /min +GSM
Network RTK users2916 total subscriptions
2014-06-03
21%
18%
7%21%
5%
3%
5%
20%
Municipalities
Consultants
Lantmäteriet
Construction
Agriculture
Power producing companies
Govermental
Other
0
500
1000
1500
2000
2500
2004
-01-
15
2005
-01-
15
2006
-01-
15
2007
-01-
15
2008
-01-
15
2009
-01-
15
2010
-01-
15
2011
-01-
15
2012
-01-
15
2013
-01-
15
Connectiontime to the service
hours/weekNumber of subscriptions
Total connection time to service
0
2000
4000
6000
8000
10000
12000
14000
16000
2004
0120
0424
2004
4720
0517
2005
4020
0611
2006
3420
0705
2007
2820
0751
2008
2120
0844
2009
1520
0938
2010
0820
1031
2011
0220
1125
2011
4820
1219
2012
4220
1313
2013
36
Antal timmar
RTK applications overview
Marine applications, Bild; Marin mätteknik
Machine guidance, Photo; PEAB
Agriculture
RTK applications overview
Partners
• Cooperation with Trimble VRS now, Leica SmartNet and TopCon TopNet Live to increase the use of GNSS and RTK.
• To find new applications and widen the use of GNSS
• Possibility to make a package, service + GNSS equipment –the user needs only one contact
• Use of one common geodetic infrastructure for GNSS, all users contribute to a common infrastructure. The users do not need to finance several separate geodetic infrastructures.
Thanks for your attention!
The Use of GNSS in Sweden and the National CORS Network SWEPOS
Mikael LILJE, Peter WIKLUND, Gunnar HEDLINGLantmäteriet, Sweden
(the Swedish mapping, cadastral and land registration authority)