1. Bundesamt für Landestopographie Office fédéral de topographie Ufficio federale di topografia Uffizi federal da topografia EUREF’03: National Report of Switzerland

2. 4 - 7 JUNE 03EUREF'03 Toledo Fundamental station Zimmerwald SLR observations –Continuously more observations with the new telescope since 1997 –ranked # 5 out of about 40 stations regarding the number of Lageos normal points in 2002 –# 1 in week March 16 to 22, 2003 GNSS oservations –1 GPS, 2 GPS/GLONASS receivers contribute to IGS and IGLOS

3. 4 - 7 JUNE 03EUREF'03 Toledo Permanent GPS networks (AGNES) Last refinements of installations (29 sites) Availability 99.1% (2002) VRS software (with post-processing) Connection D-A-CH Developments of EUREF-IP

4. 4 - 7 JUNE 03EUREF'03 Toledo Analysis of permanent GPS networks Networks: – EUREF-Subnet – AGNES + EUREF-Subnet – Processing interval: daily / hourly GPS-Meteorology: European Collaboration within COST-716 and TOUGH

5. 4 - 7 JUNE 03EUREF'03 Toledo Transformation old/new reference frames Position: LV03  LV95 - finite element transformation - software: FINELTRA (correct) - regular Grid 1km (approximate) Height: LN02  LHN95 - new: orthometric heights - part of horizontal position: diff. LN02 and normal heights - part of elevation: Bouguer anomalies - software: HTRANS

6. 4 - 7 JUNE 03EUREF'03 Toledo Maintenance control points Tasks#Dist.EstablishmentMaintenance Kmwhenwhatwherewhen Zimmerwald 1250--operation/measurementCHperm./yearly EUREF stations 3150if requiredinspectionCHevery 5 years AGNES stations 2950if requiredoperation/inspectionCHperm./every 5 years LV95 stations 20615if requiredinspectionCHevery 5 years First order points (LV03) 30005no new sitesinspectionCentr.Plateauevery 15 years InspectionPrealps./Juraevery 25 years inspectionAlpsif required First order lev. points (LHN95) 9000 3 if requiredinspectionCHevery 15 years Test nets 20-5if requiredinspectionCHevery 5 years

7. 4 - 7 JUNE 03EUREF'03 Toledo Current projects Control point data service GIS for the national border LHN95 Swiss 4D