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


Analysis Center name: VLBI Analysis Center of AI SPbU (VAC AI SPbU)

Type of analysis center: global___  special_X_

Parent/Funding organization:   Astronomival Institute of
                               Saint-Petersburg University

Name and title of primary scientific/technical contact:
     Senior researcher Dr. Oleg A.Titov

Name and title of administrative contact:
     Director of Astronomical Institute of Saint-Petersburg University
     Prof. Veniamin V.Vityazev

Mailing address:  198904, Bibliotechnaya sq., 2, Stary Peterhof,
                  Saint-Petersburg, Russia

Phone:  7-(812)-428-42-68          Fax:  7-(812)-428-71-29

E-mail address: oleg_titov@usa.net      Web address:

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.

 1. Analysis of 2-hour and 24-hour VLBI sessions for rapid daily
    EOP results
    Selected programs: NEOS-A, NEOS-Intensive, CONT, CORE, etc.

 2. Analysis of 24-hour VLBI session for regional as well as global
    geodetic networks data adjustment
    Selected programs: NEOS-A, CONT, CORE, EUROPE, etc.

 3. Analysis of 24-hour VLBI session for estimation of subdiurnal ERP
    (polar offset and UT1-UTC) with high temporal resolution - 1 point
    per 3-7 minutes
    Selected programs: NEOS-A, CONT, CORE

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

  Hardware:      PC Pentium-200 MMX, RAM 32 MB, HDD 3.2 GB
  Software:      OCCAM 3.4

Internet connection type or bit rate:   1-2 kb/sec

  Data storage capacity:   2 Gb

Describe any planned facility upgrades.

  PC Pentium II 400, RAM 64 MB, HDD 6.4 GB

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

  2 persons

Indicate which data center(s) you use:

  Goddard Space Flight Center
  US Naval Observatory

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

     Provide timely feedback to stations

***  Create high quality products and perform timely archiving and
     distribution We are going to support and distribute software OCCAM
     for VLBI data analysis

***  Place final results (TRF, CRF, EOP, and others) in IVS Data Centers
     We are going to provide IVS Data Centers with the following results:
     - TRF
     - daily EOP

     Perform software development and documentation

***  Compare products
     We are going to compare the OCCAM's results with alternative
     software (CALC/SOLVE, etc.) ones

***  Adhere to IERS Conventions


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

  Veniamin V.Vityazev
  Oleg A.Titov

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.

   From 1997 year Oleg Titov is responsible for upgrade and distribution
of OCCAM package for VLBI data analysis. He has prepared version OCCAM 3.4
for scientific community. New version of OCCAM is under progress.
   Using the OCCAM Oleg Titov has adjusted a lot of observational VLBI data.
He has been studying a motion of Ny-Alesund site on Svalbard archipelago,
seasonal variations in baselengths, etc. During his activity in Institute
of Applied Astronomy (IAA) Oleg Titov organized a service for preparation of
the Earth Orientation Parameters (EOP) for IERS.
   In Ph.D. thesis Oleg Titov has developed a new approach for VLBI data
adjustment - least squares collocation method (LSCM). It allows to obtain
the variations of polar offset as well as UT1-UTC with high temporal
resolution - one point per 3-7 minutes. Following the approach it is possible
to study high-frequency variations in the EOP.



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:   Prof. V.Vityazev


Title:  Director of Astronomical Insititute of Saint-Petersburg University


Signature: ____________________________            Date: _________________