GAGE GNSS Data Products: Past, Present and Future

Date/Time & Location

Wednesday, October 9th, 2019 from 11-12 PM in the Broadway Room 1/2


Tom Herring, Massachusetts Institute of Technology
David Phillips, UNAVCO


The GAGE Facility provides a suite of derived GNSS data products for the community including station position solutions, time series, velocities, coseismic offsets, time series properties, and tropospheric (zenith delay) parameters. These data products are generated by the GAGE GNSS Analysis Center at Central Washington University and the GAGE GNSS Analysis Center Coordinator at MIT, and archived/distributed by UNAVCO. The strategies and methodologies for generating GAGE data products are based on those developed and successfully implemented over the past decade for PBO (Herring et al., 2016). However, two new major time-phased GNSS data product developments are anticipated going forward. First, a transition from data products based on legacy GPS observables (L1, L2, code and phase) to data products based on future GPS observables (L5, L1C, etc.) and multi-constellation GNSS observables (GLONASS, Galileo, BeiDou, QZSS, etc.). Second, the number of GNSS stations analyzed will increase from ~2,000 at present time to >10,000. In addition to these major product developments, new combination data products are being developed to facilitate comparison of results between GAGE and non-GAGE analysis centers. This SIG will include (1) an overview of current GAGE GNSS data products, product changes that occurred as part of the transition from the previous GAGE award to the current GAGE award, and plans for new data products; (2) a short tutorial on how to access and visualize GAGE GNSS data products; and (3) an open forum period to address questions, promote discussions and solicit feedback from the community.