The experiment is operated by the NRL SUSIM UARS Team through daily command uploads relayed through the UARS Mission Planning Group (MPG) and the UARS Flight Operations Team (FOT).
Raw SUSIM telemetry is downlinked through one of NASA's three Tracking and Data Relay Satellites (TDRS), the NASA Communications Network (NASCOM). Earlier in the mission the data was then routed to the GSFC Data Capture Facility and then to the UARS Central Data Handling Facility (CDHF). Currently and since the retirement of the CDHF, the data is captured by PACOR-A and sent directly to the SUSIM Remote Access Computer (RAC). The RAC is a VAX which is a member of a heterogeneous cluster having 4 VAXen and one DECAlpha.
When the CDHF was still active, it processed the data based on algorithms and calibrations developed by the SUSIM UARS team to produce absolutely calibrated irradiances at instrument resolutions. A subset of these data are processed further each day to produce 1 nm integrated irradiances at 1 nm intervals and the values of 7 solar indices. After the retirement of the CDHF, all of these tasks are now performed on the SUSIM cluster.