• Visit our Facebook page
  • Visit our Twitter feed
  •     NASA Home
  •     >    Goddard Home
  •     >    Direct Readout Laboratory
  •     >    Highlights Archive

Direct Readout Laboratory

Highlights Archive

2018 Highlights

L2GEN SPA v9.3.0 Released - 8/28/2018

The DRL is pleased to announce the release of the L2GEN SPA v9.3.0.  The L2GEN algorithm suite is from the Ocean Biology Processing Group’s (OBPG) SeaWiFS Data Analysis System (SeaDAS) and has been adapted to execute for real-time applications within NASA’s International Planetary Observation Processing Package (IPOPP).  This L2GEN Science Processing Algorithm (SPA) configuration produces MODIS Level 2 Ocean Color and Sea Surface Temperature (SST) products from MODIS Level 1B products, the MODIS Terrain Corrected Geolocation product, and other optional ancillary files.  This SPA also produces VIIRS Level 2 Ocean Color (OC) and Sea Surface Temperature (SST) products from VIIRS Sensor Data Record (SDR) products (future: NASA VIIRS Level 1B inputs), the VIIRS Terrain Corrected Geolocation product, and optional ancillaries.
Enhancements to this SPA include:
  • update to version 9.3.0 of the OBPG l2gen algorithm;
  • updated parameter files, test scripts, and test data;
  • updated input file labels for VIIRS ancillaries (ncep_met_*, obpg.noaa_toast_*) to make them consistent with MODIS ancillary file labels;
  • preliminary framework implementation for NOAA-20 (JPSS-1) VIIRS processing.
SPAs function in two modes: Standalone, or as an International IPOPP plug-in (IPOPP v2.6 or later required).  

Note: Please be aware that due to limited resources, as well as the many variables that impact data product scientific integrity, the DRL is considering no longer supporting the Standalone Mode for SPA processing.  Feel free to contact us with any questions or concerns.
The L2GEN was developed by the OBPG as NASA Science Investigator-led Processing System (SIPS) algorithms.
Click here to access L2GEN SPA v9.3.0.
Click here to access the L2GEN SPA v9.3.0 User's Guide.
Follow the DRL on Facebook and Twitter.
Click here to experience the MyDRL Forums.

H2G SPA v2.5 Released - 6/27/2018

The DRL is pleased to announce the release of the H2G_SPA (Version 2.5).
The H2G_SPA (Hierarchical Data Format [HDF] to Georeferenced Tagged Image File Format [GeoTIFF] Converter Science Processing Algorithm) is designed specifically for real-time applications to create geolocated GeoTIFF images, jpeg browse images, and png browse images for parameter datasets in NOAA-20 (JPSS-1), SNPP, and EOS (Terra/Aqua) products.  H2G also creates standard true color images from supported VIIRS and MODIS science products.   The H2G_SPA functions in two modes:  Standalone, or as an IPOPP plug-in (IPOPP v2.6 required).
The H2G_SPA incorporates features to enhance output from standard science products thereby facilitating scientific interpretation for broader applications:
  • 186 pre-configured image products spanning multiple missions, multiple instruments, and multiple disciplines.
  • Emphasis on GIS-ingestible GeoTIFF output; useful for bridging RT and NRT decision support systems.
  • Pre-defined color map and scales for appropriate science product representation.
  • Choice of either geographic or stereographic projection for the output image.  Based on user requests, inclusion of other projections is under consideration.
  • Use of appropriate land/water masks when applicable for better science product representation.
  • Subsetting of swaths into user-defined regions of interest.
  • Mosaicing of multiple swaths.
  • jpeg and png browse images with legends, vector overlays, latitude/longitude overlays and legends.
  • Flagged pixel overlays on H2G geotiffs (e.g., fire pixel overlays on True Color image).
  • The capability exists to customize H2G for user-defined parameter scales, colormaps and masks.  Documentation can be made available on request for unique application. 
Enhancements to H2G_SPA v2.5 include:
  • Added support for NOAA-20 (JPSS-1) VIIRS/ATMS/CrIS image processing.
  • Updated testdata and testscripts.
  • The capability to generate high resolution VIIRS and MODIS imagery was migrated to the BlueMarble SPA for producing sharpened True Color imagery, which allows VIIRS/MODIS-scan-geometry consistent high resolution products.
  • Improved fire mask presentation based on the VIIRS-AF and VFIRE375 SPAs. 
Click here to access H2G SPA v2.5.
Click here to access the H2G SPA v2.5 User's Guide.
Follow the DRL on Facebook and Twitter.
Click here to experience the MyDRL Forums.

RT-STPS v6.0 Patch 1 Released - 2/27/2018

The DRL is pleased to announce the release of Patch 1 for the RT-STPS v6.0 package.  Patch 1 enables real-time visualization of JPSS-1/NOAA-20 VIIRS data using Simulcast v6.0, which is downstream of the pre-processor, RT-STPS, and accepts the on-orbit instrument data in real-time to single or multiple destinations simultaneously. 
The Real-time Software Telemetry Processing System (RT-STPS) is a Java real-time application that ingests real-time telemetry data from a spacecraft transmission via TCP socket or from an equivalent demodulated file, performs multi-mission protocol processing including link-layer artifact corrections, provides data integrity statistics, and produces output to a file or TCP/IP socket.
RT-STPS is preconfigured to enable the Real-Time Community to acquire transmissions from Terra/Aqua, SNPP and JPSS-1, and produce output in numerous file formats.  The preconfigured output formats are: Raw Data Records (RDRs) for the SNPP and JPSS-1 VIIRS, CrIS ATMS, and OMPS instruments; as well as Production Data Sets (PDS) for these SNPP instruments, Terra MODIS, and Aqua MODIS, AIRS, AMSR, AMSU, and CERES instruments.
Simulcast is a multi-mission tool that enables a user to select and view quicklook instrument data (JPSS-1/SNPP VIIRS as well as Aqua/Terra MODIS) in real time with a single Viewer, thus providing a valuable real-time data quality assessment utility (e.g., Global Mission Operations, Regional Ground Station Operations).
Simulcast processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS). Simulcast provides real-time geolocation and pseudo-calibration, and projects data on Mercator and Polar maps.  Simulcast can replay recent satellite passes, export displayed images to JPEG format, and save replayed passes to AVI/Quicktime movies. 
The RT-STPS and Simulcast packages were previously verified as elements of the JPSS-1/NOAA-20 Spacecraft Integration and Test Team, and again during the on-orbit direct broadcast (HRD) commissioning.
Click here to access RT-STPS v6.0 Patch 1 and Simulcast v6.0.
Click here to access the RT-STPS v6.0 and Simulcast v6.0 User's Guides.
Follow the DRL on Facebook and Twitter.
Click here to experience the MyDRL Forums.

2017 Highlights

2016 Highlights

2015 Highlights

2014 Highlights

2013 Highlights

2012 Highlights

2011 Highlights

2010 Highlights

2009 Highlights

2008 Highlights

2007 Highlights

2006 Highlights

Old Highlights