Analysis Center Response Form
Joint CSTG/IERS Call for Participation
International VLBI Service for Geodesy and Astrometry


Analysis Center name: Institute of Geodesy and Geophysics (IGG)	
Type of analysis center: special

Parent/Funding organization: Vienna University of Technology

Name and title of primary scientific/technical contact: Dr. Harald Schuh

Name and title of administrative contact: Dr. Harald Schuh

Mailing address: 	Institut fuer Geodaesie und Geophysik
		TU Wien
		Gusshausstrasse 27-29
		1040 Wien
		Austria

Phone:		++43 1 58801 12860		
Fax: 		++43 1 58801 12896

E-mail address:	hschuh@luna.tuwien.ac.at		
Web address: 	http://luna.tuwien.ac.at/

If applying as a Special Analysis Center, describe the special type(s) of analysis you will perform. If 
applying as a Global Analysis Center, describe the global analysis you will perform. Indicate your specific 
analysis interests and describe how you select the data you analyze. 

At present, the software package OCCAM 5.0 is used at IGG for data analysis. A special interest 
of our group is focussed on modelling the tropospheric refraction. This includes new models of the 
tropospheric zenith delay, improved mapping functions, the gradient approach and comparisons 
with external measurements obtained by GPS and WVR. Databases to be analysed regularly with 
respect to the TRF and EOP will be mainly IRIS-S, NEOS and EUROPE sessions.
Together with Oleg Titov (Astronomical Institute of St. Petersburg University) and Volker Tesmer 
(DGFI, Munich) a group was set up in summer 2000 to test, develop and further enhance the 
OCCAM software. In particular it is planned to use the complete stochastical model of parameter 
estimation and to compare traditional estimation procedures such as standard least-squares 
algorithm with new techniques (Kalman filter, LSCM, ..). Several improved correction models 
have to be entered in OCCAM, too, according to the new IERS Conventions (2000) which will be 
published soon. 

Describe the computer hardware configuration and the software package(s) you use for analysis.

We use a HP 9000 workstation and several PCs for the analysis with the software package 
OCCAM.

Internet connection type or bit rate:	ACOnet:	16 Mbit/s	Data storage capacity:	40 Gb
				KPNQwest:	8 Mbit/s

Describe any planned facility upgrades.

Number of full-time-equivalent personnel assigned to analysis center functions:	1.5

Indicate which data center(s) you use:	BKG, GSFC

Indicate which of the following IVS Analysis Center functions you will perform and explain briefly how 
you will perform them:

	Place final results (TRF, EOP, and others) in IVS Data Centers
	Perform software development and documentation: OCCAM (see above)
	Compare products: 	TRF, EOP, …
				tropospheric parameters obtained by VLBI and GPS
	Adhere to IERS Conventions (see above)	

Attach a list of personnel (names and titles) whom you designate as IVS Associate Members through their 
affiliation with your analysis center.

	Johannes Boehm, research assistant (100 %)
	Thomas Hobiger, research assistant (50 %)

Please provide any other information that you feel will be helpful in demonstrating your analysis center’s 
capabilities to participate in the IVS. If you proposed to the IERS in 1995/6 as an analysis center and wish 
to have that proposal carry over to the IVS, please make such a statement in this proposal. 

Your signature on this form indicates your agreement to participate in the IVS as an Analysis Center and to 
work closely with the IVS Analysis Coordinator. If this is a new proposal (i.e. not carried over from IERS) 
your signature commits your organization to participate in the IVS.

Name of person signing:	Harald Schuh			   Title: Dr.

Signature: _________________________________________	Date: _________________