• Visit our Facebook page
  • Visit our Twitter feed
  •     NASA Home
  •     >    Goddard Home
  •     >    Direct Readout Laboratory
  •     >    Highlights Archive
Click here for information on the NASA Direct Readout Conference (NDRC) Webinar

Direct Readout Laboratory

Highlights Archive

2019 Highlights

RT-STPS v6.0 Patch 3 Released - 7/11/2019

The DRL is pleased to announce the release of the Real-time Software Telemetry Processing System (RT-STPS) v6.0 Patch 3 for Linux.  Installation of Patch 3 is critical as it enables FTPS explicit mode access for ancillary (e.g., leapsec file) updates.  RT-STPS requires a leapsec file to calculate the current number of leap seconds to use in critical time calculations. A periodic leapsec file update is required for RT-STPS operation, otherwise higher level processing could result in anomaly or even failures.
 
Note: It is imperative this patch be applied to comply with the latest security guidelines by the agency.  This month NASA will block all connection attempts via FTP.  Reference the announcement from March 26 for details as well as utilities that are available to insure your seamless access to NASA software and ancillary data: https://directreadout.sci.gsfc.nasa.gov/?id=highlights_archive#272
 
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 NOAA-20 (JPSS-1), and produce output in numerous file formats.  The preconfigured output formats are: Raw Data Records (RDRs) for the SNPP and NOAA-20 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.
 
Click here to access RT-STPS v6.0 Patch 3 and its corresponding README file.
Click here to access the the RT-STPS v6.0 User Guide.
Follow the DRL on Facebook and Twitter.
Click here to experience the MyDRL Forums.

IPOPP v3.0 Patch 1 Released - 3/26/2019

The DRL is pleased to announce the release of International Planetary Observation Processing Package (IPOPP) v3.0 Patch 1.  Installation of Patch 1 is critical as it enables FTPS explicit mode to insure continued uninterrupted service of autonomous ancillary/auxiliary file retrievals for your real-time operations.  The Patch 1 will unlock all security protocols within your existing IPOPP v3.0 to be in compliance (you’re done).

Note: This patch is compatible with IPOPP v3.0 only.  Earlier versions of IPOPP will no longer function so consider updating at your earliest convenience.
 
Very important for all data access, beyond IPOPP:
NASA requires 100% encrypted communication to access all data (via manual or end-user scripted means) hosted by the DRL’s Information Services.  Below are various recommended methods/tools that exist for your ease of use to make this a seamless transition while adhering to the latest agency security guidelines.
 
IPOPP v3.0 produces NOAA-20 (JPSS-1) and SNPP VIIRS, CrIS, ATMS, and OMPS output, as well as Terra/Aqua MODIS output.
Click here to  access IPOPP v3.0 Patch 1 and its corresponding README file.
Click here to access the IPOPP v3.0 User Guide.
 
Retrieving files via explicit FTPS using FileZilla
Open FileZilla, and then open FileZilla's Site Manager and click the New Site button.  Enter "is.sci.gsfc.nasa.gov" as the Host, "21" as the Port, select "FTP - File Transfer Protocol" from the Protocol dropdown, select "Require explicit FTP over TLS" from the Encryption dropdown, select "Anonymous" for the Logon Type, and then click the Connect button.  When you connect, an Unknown Certificate prompt may appear asking if you want to trust the certificate for is.sci.gsfc.nasa.gov.  Click OK to trust the certificate.  Now use the right side Remote site window in FileZilla to navigate to the file or files you want to download, use the left side Local site window to navigate to the desired destination for the downloaded files, and then click and drag to files you want to download from the Remote site window to the Local site window to download them.
 
Retrieving files via HTTPS using a web browser
Open a web browser and enter https://is.sci.gsfc.nasa.gov in the address bar.  Navigate to the file or files you want to download, right click on them, and click "Save Link As..." or "Save target as..." to download them.
 
Retrieving files via explicit FTPS using curl
To list the contents of a directory on is.sci.gsfc.nasa.gov, refer to the following example command which lists the contents of the "anciilary/ephemeris/tle/" directory.  Make sure to include the trailing slash.
curl --tlsv1.2 --ssl-reqd ftp://is.sci.gsfc.nasa.gov/ancillary/ephemeris/tle/
If the "--tlsv1.2" option is not recognized, you may need to upgrade your version of curl.  To download a specific file, use the "-o" option accompanied by the name of the destination file.  For example:
curl --tlsv1.2 --ssl-reqd ftp://is.sci.gsfc.nasa.gov/ancillary/ephemeris/tle/drl.tle -o drl.tle
 
Retrieving files via HTTPS using curl
To list the contents of a directory on is.sci.gsfc.nasa.gov, refer to the following example command which lists the contents of the "anciilary/ephemeris/tle/" directory.  Make sure to include the trailing slash.
curl https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/tle/
This command should return HTML code for a table showing the directory's contents.  If you receive an error message about an SSL handshake failure instead, you may need to upgrade your version of curl to one that supports TLS 1.2.  To download a specific file, use the "-o" option accompanied by the name of the destination file.  For example:
curl https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/tle/drl.tle -o drl.tle
 
Retrieving files via HTTPS using wget
To list the contents of a directory on is.sci.gsfc.nasa.gov, refer to the following example command which lists the contents of the "anciilary/ephemeris/tle/" directory.
wget -q -O - https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/tle/
This command should return HTML code for a table showing the directory's contents.  To download a file, the "-q" and "-O -" options are not necessary.  For example:
wget https://is.sci.gsfc.nasa.gov/ancillary/ephemeris/tle/drl.tle
 
 

IMAPP SPA v3.1.1 Released - 2/1/2019

The DRL is pleased to announce the release of the IMAPP SPA v3.1.1.  This implementation of select NASA Level 2 algorithms from within the UW/SSEC International MODIS/AIRS Processing Package (IMAPP) was created for real-time or near real-time applications within the multi-mission, multi-discipline International Planetary Observation Processing Package (IPOPP) framework. The IMAPP Science Processing Algorithm (SPA) v3.1.1 consists of official NASA algorithms only, and processes MODIS Aqua and Terra Level 1B data into the following MODIS Level 2 atmospheric products:
  • Cloudmask (MOD35);
  • Cloudtop Properties, Cloud Phase and Cloud Optical properties (MOD06);
  • Atmospheric Profiles (MOD07);
  • Aerosol (MOD04); and
  • Aerosol 3km.
This SPA functions in two modes: Standalone, or as an IPOPP plug-in (IPOPP v3.0 or later required).
Enhancements to this SPA include:
  • new Terra destriping coefficients and new Cloud Mask thresholds put into place after the Terra Safe-Hold Event that took place in February 2016;
  • changes to meteorological ancillary requirements.
Click here  to access IMAPP SPA v3.1.1.
Click here to access the IMAPP SPA v3.1.1 User's Guide.
Follow the DRL on Facebook and Twitter.
Click here to collaborate via the MyDRL Forums.
 

2018 Highlights

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