Analysis Center Response Form Joint CSTG/IERS Call for Participation International VLBI Service for Geodesy and Astrometry Analysis Center name: Jet Propulsion Laboratory Type of analysis center: global_x_ special___ Parent/Funding organization: Jet Propulsion Laboratory Name and title of primary scientific/technical contact: Chris Jacobs, Sr. Engineer Name and title of administrative contact: Chris Jacobs, Sr. Engineer Mailing address: Mail Stop 238-600 Jet Propulsion Laboratory 4800 Oak Grove Dr. Pasadena, Ca 91109 Phone: +1-818-354-7490 Fax: +1-818-393-4965 E-mail address: Chris.Jacobs@jpl.nasa.gov 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. We plan to continue combining all available geodetic/astrometric data into a CRF analysis. We also have interests in furthering astrometric and geophysical research. Describe the computer hardware configuration and the software package(s) you use for analysis. Software: MODEST Hardware: DEC Alpha 600A 5/500s: vlbi07, vlbi08, vlbi09 Internet connection type or bit rate: T1 Data storage capacity: ~100 GB Describe any planned facility upgrades. None Number of full-time-equivalent personnel assigned to analysis center functions: 2 Indicate which data center(s) you use: JPL, CDDIS 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: We provide feedback to the DSN stations through an interactive web-based bulletin board. We also post relevant results of analysis on the web for the stations to review. Create high quality products and perform timely archiving and distribution: We produce CRFs and associated nutation series in the J2000 system. Place final results in IVS Data Centers: We send CRF results to the IERS Central Bureau on an annual basis. Perform software development and documentation: We continually update MODEST. The algorithms are updated frequently and documented informally at the time and on a more formal basis about once every two years. Special care is taken to include astrometric and geodetic models as specified in the IERS conventions. A user's guide is also maintained. Compare products: We compare our CRF results with results from other centers. We have also done careful comparisons of our modeling code. Adhere to IERS Conventions: We update MODEST on a continual basis to conform to the IERS Conventions as closely as possible. Attach a list of personnel (names and titles) whom you designate as IVS Associate Members through their affiliation with your analysis center. Chris Jacobs, Sr. Engineer , JPL, Chris.Jacobs@jpl.nasa.gov Ojars Sovers, Sr. Scientist, Remote Sensing Analysis Inc., ojs@logos.jpl.nasa.gov Alan Steppe, Analyst , JPL, as@logos.jpl.nasa.gov 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. Our JPL VLBI group has done VLBI analysis since the early 1970s. We have developed the MODEST VLBI analysis software. We are active in improving VLBI models. 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: Chris Jacobs Title: Sr. Engineer, Tracking and Applications Section Signature: _________________________________________ Date: 19 September 1998