EUREF'05: National Report of Switzerland New Developments in Swiss National Geodetic Surveying

The efforts to establish a Swiss Combined Geodetic Network (CH-CGN) were continued with priority last year. Interesting results can be reported from a complete re-observation of the 3D reference network (LV95), from a newly developed Swiss geoid model (CHGeo2004) as well as from a gravity-related national height reference frame (LHN95). The performance of the permanent AGNES network and the positioning service (swipos®) could be further improved by replacing the control center and by introducing a new concept of data distribution over the Internet. The integrity of the services is now being continuously monitored by a special device. The equipment is portable and therefore capable of monitoring the performance of the positioning service even in rural areas. The Permanent Network Analysis Center (PNAC) at swisstopo was enlarged and the co-operation with CODE at the Astronomical Institute at the University of Berne (AIUB) was intensified by consequently using synergies from software development and the analysis procedures