The JPSS Ground Segment Algorithm Testing and Integration Process

This presentation describes the NASA JPSS Ground Segment science algorithm implementation process from the development stage by the National Oceanic and Atmospheric Administration (NOAA), Satellite and Information Services (NESDIS) Center for Satellite Applications and Research (STAR) science teams to the full operationalization into the Interface Processing Segment (IDPS). The IDPS is the operational processing system that provides Science Data Records (SDR’s) from the JPSS Advanced Technology Microwave Sounder (ATMS), Cross-track Infrared Sounder (CrIS), Visible Infrared Imaging Radiometer Suite (VIIRS) and Ozone Mapping and Profiler Suite (OMPS) to NOAA.

We focus on the NASA Data Products Engineering and Services (DPES) Algorithm Integration Team (AIT) functional and regression test activities and discuss the various steps through the operationalization process. In the functional testing phase, the AIT uses specific chunks of data (granules) selected by the NOAA STAR Calibration and Validation (cal/val) Teams to demonstrate that a small change in the code performs properly and does not disrupt the rest of the algorithm chain. In the regression testing phase, the modified code is placed into to the Government Resources for Algorithm Verification, Integration, Test and Evaluation (GRAVITE) Algorithm Development Area (G-ADA), a simulated and smaller version of the operational IDPS. Baseline files are swapped out, not edited and the whole code package runs in one full orbit of Science Data Records (SDR’s) using Calibration Look Up Tables (LUT’s) for the time of the orbit. Once the algorithms are tested and verified by the AIT G-ADA team it is sent to Raytheon for final implementation in the IDPS as part of the Common Ground System (CGS).