DRL Highlights

IMAPP_SPA Version 2.0 Released – 2/4/2009

The Direct Readout Laboratory (DRL) is pleased to announce the release of the MODIS IMAPP_SPA Version 2.0.  Excepting the addition of a destripe algorithm, there is no change to the core set of science algorithms in this release.  The IMAPP and MODIS Destripe Direct Broadcast algorithms were provided to the DRL by the Space Science and Engineering Center (SSEC), University of Wisconsin-Madison. 

This implementation of IMAPP is a source of science-sanctioned MODIS Level 2 atmospheric products: Cloudmask (MOD35); Cloudtop Properties and Cloud Phase (a portion of MOD06); Atmospheric Profiles (MOD07); and Aerosol (MOD04). 

Enhancements:

• incorporates the MODIS Destripe Direct Broadcast Software Version 1.0 (September 24, 2008) destriping code, to remove artificial stripes that appear in the MODIS L1B 1km infrared bands due to detector-to-detector variations and mirror side effects
• grib2 ancillary data format capability
• installable as an International Polar Orbiter Processing Package (IPOPP) plug-in (IPOPP Version 1.6a or later)
• improved ancillary file logic in IPOPP mode; striving for the highest-quality science data products for real-time applications (many thanks to the SSEC)

Click here to download IMAPP_SPA_V2.0.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

L2GEN_SPA Version 5.8.9 Released – 1/8/2009

The Direct Readout Laboratory is pleased to announce the release of the L2GEN_SPA (Version 5.8.9).  The science algorithms within L2GEN (formerly MSL12) are provided by the Ocean Biology Processing Group (OBPG).  The OBPG advises that the MODIS SST and Ocean Color products are unaffected by this most recent release.

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files.

What’s new in L2GEN_SPA?:

1. supports both a standalone mode and an IPOPP mode (as an IPOPP plug-in for IPOPP v1.6 or later).
2. includes improved ancillary file logic (IPOPP mode), to provide the highest-quality science data for real-time applications. 
3. also includes a day/night pass check for the Ocean Color product (i.e., the chlor_a will not be processed for night passes). 

The L2GEN_SPA Version 5.8.9 has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation. 

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API). 

Click here to download L2GEN_SPA_V5.8.9.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Version 4.1 Released – 8/5/2008

The DRL is pleased to announce a new release of Simulcast (Version 4.1). This release includes Simulcast Services for both Linux and Windows users, as well as Version 4.1 of the Simulcast Viewer for Windows, published as a self-installing package. 

Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single Viewer. The Simulcast Services processes and visualizes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).

Enhancements in Version 4.1:

Simulcast Version 4.1 addresses stability issues when multiple viewers are simultaneously connected to a server at resolutions greater than 1 km.  All users are encouraged to update to Version 4.1.

As an element of the IPOPP framework (a leveraged NISGS technology), Simulcast provides the real-time quicklook visualization capability.

Click here for more information on the Simulcast architecture.

Click here to download Simulcast.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODLST_SPA Version 4.14 Released – 7/11/2008

The DRL is pleased to announce the release of the MODLST_SPA (Version 4.14).  The MODLST algorithm was provided to the DRL by the MODIS Land Rapid Response Team. 

This Land Surface Temperature (LST) algorithm uses brightness temperatures in MODIS bands 31 and 32 to produce day and night LST products at 1-km spatial resolutions in swath format. It uses MODIS Level 1B 1-km and geolocation HDF files and outputs LST in HDF.

The MODLST_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation. 

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API). 

Click here to download MODLST_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

L2GEN_SPA Version 5.8.3 Released – 7/9/2008

The DRL is pleased to announce the release of the L2GEN_SPA (Version 5.8.3).  The science algorithms within L2GEN (formerly MSL12) are provided by the Ocean Biology Processing Group (OBPG). 

This implementation of L2GEN is a source of science-sanctioned MODIS Level 2 Ocean Color and Sea Surface Temperature products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files.

The L2GEN_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation. 

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API). 

Click here to download L2GEN_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MOD09_SPA Version 5.3.18 Released – 6/28/2008

The DRL is pleased to announce the release of the MOD09_SPA (Version 5.3.18).  This Land Surface Reflectance Science Processing Algorithm (SPA) uses the MODIS 1km, half km, and quarter km L1B Calibrated Geolocated Radiances HDF and MODIS Geolocation HDF input products, and utcpole, leapsec, and meteorology ancillary files, to create the MODIS Level 2 Land Surface Reflectance Product.

The MOD09_SPA allows processing of arbitrary sized granules, and simplifies the ancillary data requirements. The MOD09_SPA will work with either the grib1 or grib2 ancillary files. Beginning in September 2008, the NCEP meteorology data will be available in grib2 format only.

The MOD09_SPA has been packaged by both the Cooperative Institute for Meteorological Satellite Studies (CIMSS) and the DRL, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API). 

Click here to download MOD09_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODISL1DB_SPA Version 1.5 Released – 4/14/2008

The DRL is pleased to announce the release of the MODISL1DB_SPA (Version 1.5). The MODIS Level 1 Direct Broadcast Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01) and Geolocation (MOD03/MYD03) products. It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules.

The MODISL1DB_SPA v1.5 package has been tested successfully on the following versions of Linux: CentOS, Fedora, Kubuntu, and SUSE. This release contains no processing code changes, however, the Ocean Biology Processing Group (OBPG) MODISL1DB 1.5 distribution has been updated to include statically linked binaries. This may allow users to run MODISL1DB on a wider variety of unsupported Linux systems.

This latest MODISL1DB SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

Click here to download MODISL1DB_SPA1.5.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

IPOPP Alpha Test Program – 2/22/2008

The DRL has launched an Alpha Test Program to deliver evolving NPP In-Situ Ground System (NISGS) technologies to Alpha test sites for evaluation on the road to NPP.  The International Polar Orbiter Processing Package (IPOPP) leverages the NISGS technologies to maximize the utility of Earth science data for real-time decision-making.  The DRL has delivered technolgies to the following Alpha test sites:

• United States Department of Agriculture (USDA) Forest Service Remote Sensing and Applications Center (RSAC)
• Oregon State University (OSU)
• University of South Florida (USF)
• National Institute for Space Research (INPE)
• National Commission for Biodiversity of Mexico (CONABIO)
• Center for Rapid Environmental Assessment and Terrain Evaluation (CREATE)
• Landgate Satellite Remote Sensing Services

It is important to note that the DRL continues to work closely with the science discipline teams from Land, Ocean and Atmosphere (respectively:  the MODIS Land Rapid Response Team, the Ocean Biology Processing Group, and the Cooperative Institute for Meteorological Satellite Studies) to bring you standalone versions of Science Processing Algorithms (SPAs). 

Click here to view the IPOPP User's Guide, Version 1.5a, included with the initial IPOPP Alpha Test Program release.

Click here for a visual representation of all recent products produced by the IPOPP.  Beneath the thumbnails are provided full-resolution GeoTIFF and KML hyperlinks.  If you have a Google Earth Client installed, merely click on the desired KML hyperlink.  If you choose not to use the Google Earth Client, we also provide a Googlemaps presentation.

The IPOPP Team (IPO, CIMSS and DRL) continues to work with the NPP algorithms while evolving the SPA Model.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

GBAD_SPA Version 2.6 Released – 12/12/2007

The DRL is pleased to announce the release of the Aqua GBAD _SPA (Version 2.6).  The Ground Based Attitude Determination (GBAD) Ephemeris and Attitude Data Converter Science Processing Algorithm (SPA) creates ephemeris and attitude files from data packets in the Aqua spacecraft telemetry downlink.

The GBAD_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API). GBAD_SPA features improved logic in the aq_class_noradfile.c for reading the TLE file.

Click here for more information on GBAD.

Click here to download GBAD_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

RT-STPS Version 4.1 Released – 10/17/2007

The DRL is pleased to announce a new release of the Real-Time Software Telemetry Processing System (RT-STPS) (Version 4.1). RT-STPS is a standalone, Java-based software package that serves as a Consultative Committee for Space Data Systems (CCSDS) protocol and Level-0 processing data gateway.  It performs protocol and Level-0 processing for legacy Earth Observing System (EOS) and future NPOESS Preparatory Project (NPP) missions.

RT-STPS Version 4.0 addresses minor issues associated with some of the arguments in the scripts files, and updates the version string to the proper release number.  Version 4.1 has been tested with RS interleaves of 1, 4 and 5.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 4.1.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

CREFL_SPA Version 1.4.2 Released – 9/20/2007

The DRL is pleased to announce the release of the MODIS crefl_SPA (Version 1.4.2).  The MODIS Corrected Reflectance Science Processing Algorithm processes MODIS and Terra Level 1B Direct Broadcast data into Level 2 Corrected Reflectance products. 

The crefl_SPA performs atmospheric correction with MODIS visible and near-infrared bands (bands 1 through 7).  It corrects for molecular (Rayleigh) scattering and gaseous absorption (water vapor and ozone) using climatological values for gas contents.  It requires no real-time input of ancillary data.  The Corrected Reflectance products created by crefl_SPA are very similar to the MODIS Land Surface Reflectance product (MOD09) in clear atmospheric conditions, since the algorithms used to derive both are based on the 6S Radiative Transfer Model.  The products show differences in the presence of aerosols, however, because the MODIS Land Surface Reflectance product uses a more complex atmospheric correction algorithm that includes a correction for aerosols.

The crefl_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

The Corrected Reflectance algorithm (Version 1.4.2) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download crefl_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Version 4.0 Released – 9/19/2007

The DRL is pleased to announce a new release of Simulcast (Version 4.0). This release includes Simulcast Services for both Linux and Windows users, as well as Version 4.0 of the Simulcast Viewer for Windows, published as a self-installing package.  Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single Viewer. Simulcast is presently being developed under Java 1.5.  The Simulcast Services process and visualize instrument data in real time, and accept as input CCSDS packet streams (e.g., RT-STPS).

Enhancements in Version 4.0 include:

• Created more intelligent interface for display resolution.
• Improved the Mercator projection algorithm so that swaths near the poles have greater accuracy.
• Server can now transmit on multiple TCP ports simultaneously.
• Modified the loop display mode so that it will not display any passes with bad data
• Improved error trapping and display algorithm.
• Improved and consolidated documentation into a single PDF file.

As an element of the IPOPP framework (a leveraged NISGS technology), Simulcast provides the real-time quicklook visualization capability.

Click here for more information on the Simulcast architecture.

Click here to download Simulcast.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

IMAPP_SPA Released – 9/18/2007

The DRL is pleased to announce the release of the MODIS IMAPP_SPA Version 2.0.  The International MODIS/AIRS Processing Package (IMAPP) Science Processing Algorithm (SPA) processes MODIS Aqua and Terra Level 1B Direct Broadcast data into the following Level 2 MODIS atmospheric products:  Cloudmask (MOD35); Cloudtop Properties and Cloud Phase (a portion of MOD06); Atmospheric Profiles (MOD07); and Aerosol (MOD04).

The IMAPP_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL conform to this common Application Programming Interface (API).

IMAPP was provided to the DRL by the Space Science and Engineering Center (SSEC), University of Wisconsin-Madison.  Special thanks to the Cooperative Institute for Meteorological Satellite Studies (CIMSS) for co-developing an extended capability to the native IMAPP package in compliance with the goals of IPOPP.

Click here to download IMAPP_SPA.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

RT-STPS Version 4.0 Released – 9/10/2007

The DRL is pleased to announce a new release of the Real-Time Software Telemetry Processing System (RT-STPS) (Version 4.0). RT-STPS is a standalone, Java-based software package that serves as a Consultative Committee for Space Data Systems (CCSDS) protocol and Level-0 processing data gateway.  It performs protocol and Level-0 processing for legacy Earth Observing System (EOS) and future NPOESS Preparatory Project (NPP) missions.

RT-STPS Version 4.0 addresses issues in the Reed Solomon (RS) multiple-error decoding algorithm.  Version 4.0 has been tested with RS interleaves of 1, 4 and 5.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 4.0.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MSL12_SPA Released – 8/28/2007

The DRL is pleased to announce the release of the MODIS MSL12_SPA Version 5.7.1.  The Multi-Sensor Level 1 to Level 2 (MSL12) algorithm was extracted from the SeaWiFS Data Analysis System (SeaDAS).  It produces science-sanctioned MODIS Level 2 Ocean Color (daytime product, includes Chlorophyll-a concentration) and Sea Surface Temperature (SST) products from inputs of MODIS Level 1B 1km (MOD021KM/MYD021KM) products, MODIS Geolocation (MOD03/MYD03) products, and other optional ancillary files. 

MSL12_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation. 

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

For more details, the MSL12_SPA document is attached.

SeaDAS and its component MSL12 algorithm were provided to the DRL by the Ocean Biology Processing Group (OBPG) at NASA GSFC.

Click here to download MSL12_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODISL1DB_SPA Version 1.4 Released – 8/3/2007

The DRL is pleased to announce the release of MODISL1DB_SPA version 1.4. The MODISL1DB Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01)and Geolocation (MOD03/MYD03)products.  It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules. 

This latest MODISL1DB SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The MODISL1DB v1.4 source code has been updated to improve Level 0 to Level 1A processing, geolocation processing, and Level 1A to Level 1B processing. (A detailed list of specific changes is contained in the PDF document included in the software package.)  The SPA code has been updated to include a geocheck_threshold parameter, which gives the user the flexibility to specify the threshold for a geolocation validation test.  Additionally, an improvement was made to the auto-download of leap second (leapsec) and Earth motion (utcpole) ancillary files.

The algorithm was enhanced by the Ocean Biology Processing Group (OBPG) at NASA/GSFC; the Cooperative Institute for Meteorological Satellite Studies (CIMSS) at the University of Wisconsin; and the DRL at NASA/GSFC.

Click here to download MODISL1DB_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODIS Multidiscipline Data Product Gallery – 7/31/2007

The DRL is pleased to present the MODIS Multidiscipline Data Product Gallery.

Of relevance here, in addition to the data product gallery, is how these products are created and in what format.  One of the goals of the International Polar Orbiter Processing Package (IPOPP) is to create multi-mission, multidiscipline data products while supporting the respective mission-specified data format, and ultimately to provide a data product in a more standard (portable) data format.

The gallery tangibly represents this goal.  Each Science Processing Algorithm (SPA) running under IPOPP creates an HDF output.  A DRL tool known as H2G (HDF to GeoTIFF) converts the data product output of each SPA into a GeoTIFF format, along with the respective science-sanctioned color map information.  This GeoTIFF format is portable to any image viewer, while being compatible with Geographic Information System (GIS) environments.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

NDVIEVI_SPA Released – 6/28/2007

The DRL is pleased to announce the release of NDVIEVI_SPA (heritage MOD13 algorithm).  This Normalized Difference Vegetation Index (NDVI)/Enhanced Vegetation Index (EVI) algorithm uses all three MODIS Level 1B files (1KM, HKM and QKM) and outputs NDVI and EVI in a single HDF file.  NDVI/EVI is a daytime only product.  The algorithm is applied on corrected reflectances in MODIS bands 1, 2 and 3. 

NDVIEVI_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  All of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The Level 2 MODIS NDVI/EVI algorithm (Version 2.2) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download NDVIEVI_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MOD14_SPA Released – 6/18/2007

The DRL is pleased to announce the release of MOD14_SPA.  This software package contains the latest Level 2 MODIS Active Fire Product (MOD14) Science Processing Algorithm (SPA), Version 5.  This algorithm uses brightness temperatures derived from MODIS bands 21, 22 and 31.  MODIS bands 1, 2, 7 and 32 are used to reject false alarms and to mask clouds.  The algorithm reads a MODIS 1-km Level 1B file along with the associated geolocation file, and outputs a two-dimensional fire mask in HDF.

MOD14_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  From this point forward all of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The MODIS Active Fire Product (MOD14) Production Code (Version 5.0.0, April 17, 2006) was provided to the DRL by the MODIS Land Rapid Response Team.

Click here to download MOD14_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODLST_SPA Released – 6/14/2007

The DRL is pleased to announce the release of MODLST_SPA.  This software package contains the Level 2 MODIS Land Surface Temperature (LST) Science Processing Algorithm (SPA).  This LST algorithm uses brightness temperatures in MODIS bands 31 and 32 to produce day and night LST products at 1-km spatial resolutions in swath format.  It uses MODIS Level 1B 1-km and geolocation Hierarchical Data Format (HDF) files and outputs LST in HDF.

MODLST_SPA has been packaged with the DRL's algorithm wrapper, and fulfills the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation.

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort.  From this point forward all of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

The Level 2 MODIS LST production code (Version 4.13, May 31, 2007) was provided to the DRL by the MODIS Land Rapid Response Team. 

Click here to download MODLST_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

MODISL1DB_SPA Released – 6/1/2007

The DRL is pleased to announce the release of MODISL1DB_SPA. The MODISL1DB Science Processing Algorithm (SPA) processes Level 0 MODIS data into Level 1A (MOD01/MYD01 )and Geolocation (MOD03/MYD03) products.  It also processes Level 1A and Geolocation products into MODIS Level 1B one km (MOD021KM/MYD021KM), half km (MOD02HKM/MYD02QKM), and quarter km (MOD02QKM/MYD02QKM) granules. 

MODISL1DB_SPA represents a significant milestone for the Direct Readout Community, as it is the first SPA that has been packaged and released fulfilling the objectives of a Modular Components Approach (MCA) for Earth Science data processing implementation. 

The algorithm wrapper provides a common command and execution interface to encapsulate multi-discipline, multi-mission SPAs.  The wrapper also provides a structured, standardized technique for packaging new or updated algorithms with minimal effort. From this point forward all of the processing algorithms and processing packages released by the DRL will conform to this common Application Programming Interface (API).

This MODIS Level-1 algorithm was originally enhanced by the Ocean Biology Processing Group (OBPG) at NASA/GSFC; the Cooperative Institute for Meteorological Satellite Studies (CIMSS) at the University of Wisconsin; and the DRL at NASA/GSFC.  The algorithm was included within the MODIS Level 1 Direct Broadcast software (MODISL1DB 1.3, August 1, 2006). 

Click here to download MODISL1DB_SPA

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Viewer for Windows Version 3.2.8 Released – 3/6/2007

The DRL is pleased to announce a new release of the Simulcast Viewer Version 3.2.8 for Windows Users. This is the same viewer bundled with the prior Simulcast Services release, however, based on user feedback we packaged this viewer-only version for Windows as a self-installing package. Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time with a single viewer application. Simulcast is presently being developed under Java 1.5.

Enhancements in Version 3.2.8 of the Viewer include:

• Enhanced the TCP socket interface to close connection when an inactivity timeout occurs
• Better tooltips when the mouse pointer hovers over a button
• Enhanced documentation (Draft User's Guide) included
  

Click here for more information on Simulcast.

Click here to download Simulcast Viewer for Windows Version 3.2.8.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Simulcast Services Version 3.2.8 Released – 3/1/2007

The DRL is pleased to announce a new release of Simulcast Services (Version 3.2.8) for both Linux and Windows Users. Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single client. Simulcast is presently being developed under Java 1.5. The Simulcast Services processes instrument data in real time, and accepts as input CCSDS packet streams (e.g., RT-STPS).

Enhancements in Version 3.2.8 include:

• More band/resolution options for downstream servers (when operated as a constellation of Simulcast servers)
• A fully-featured Viewer (which replaces the Client in previous versions of Simulcast)
• Enhanced the TCP socket interface to close connection when an inactivity timeout occurs
• Better tooltips when the mouse pointer hovers over a button
• Enhanced documentation (Draft User's Guide for Viewer) included
• Support for IPv6-formatted IP addresses
• Server now attempts to fix corrupted passes at start-up
• Server performs a periodic loopback test to check for network connection problems
• Installation of Simulcast Services using a Windows Installer (exe) file and functions as a 'Windows system service'

Very soon the DRL will release Version 3.2.8 of a separate Simulcast Viewer, packaged as a Windows Installer (exe) file (this viewer already resides within this Simulcast Services release).

Click here for more information on Simulcast.

Click here to download Simulcast Services Version 3.2.8.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Patrick Coronado or Kelvin Brentzel directly.

Terra and Aqua Direct Broadcast Downlink Scheduling Information Restored – 2/21/2007

The DRL is pleased to announce the restoration of the Terra and Aqua Direct Broadcast downlink scheduling information. This service is provided to the global Direct Readout sites via the DRL in
two forms: FTP access and Web-based.

Terra:
http://directreadout.sci.gsfc.nasa.gov/index.cfm?section=missions&page=terraMission
ftp://is.sci.gsfc.nasa.gov/ancillary/ephemeris/schedule/terra/downlink/
ftp://is.sci.gsfc.nasa.gov/ancillary/ephemeris/schedule/terra/dsn/

Aqua:
http://directreadout.sci.gsfc.nasa.gov/index.cfm?section=missions&page=aquaMission
ftp://is.sci.gsfc.nasa.gov/ancillary/ephemeris/schedule/aqua/downlink/

Let us know if you have any questions, which may be directed either to our "Contact Us" system, Patrick Coronado, or Kelvin Brentzel.

RT-STPS Version 3.07 Released – 12/20/2006

The DRL is pleased to announce a new release of the Real-time Software Telemetry Processing System (RT-STPS) (Version 3.07). This version features enhanced build scripts and installation documentation for Windows users.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 3.07.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or Kelvin Brentzel.

NPP Mission Data Format Control Book (MDFCB) Released - 12/5/2006

You may access the NPP MDFCB through the Direct Readout Web Portal at:

http://directreadout.sci.gsfc.nasa.gov/index.cfm?section=missions&page=nppMission

Let us know if you have any questions, which may be directed either to our "Contact Us" system, Patrick Coronado, or Kelvin Brentzel.

"Simulcast Viewer" (Version 3.2.4) for Windows Released - 11/21/2006

The NASA Direct Readout Laboratory is pleased to announce the release of the "Simulcast Viewer" (Version 3.2.4) for Windows. This is the viewer from Simulcast Version 3.0, along with visualization enhancements, in a self-installing package. If necessary, it will also install the JRE Version 1.5. We anticipate the release of an updated Simulcast Services package for Windows/Linux in the very near future. Simulcast is a Java-based multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single viewer. Simulcast is presently being developed under Java 1.5. Enhancements in Version 3.2.4 for Windows include:

• Multiple passes from multiple sources (i.e., a combination of spacecraft and ground station) may now be viewed simultaneously on the map layouts
• Preferences selected on the options screen are now persistent, so they remain selected after closing and re-launching the application
• A video recorder has been added that allows AVI and QuickTime movies to be created containing the contents of the entire Simulcast Viewer window, or just the map or instrument layouts
• Passes may now be sorted by time or name
• A default visual (true color, gray scale, etc.) may now be selected for new passes being viewed
• Playback looping/throttling has been added to provide a variety of playback scenarios (e.g., viewing multiple passes from multiple sources simultaneously)

Click here for more information on Simulcast.

Click here to download Simulcast Version 3.2.4.

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Kelvin Brentzel directly.

Construction Record Lister Version 1.01 Released – 11/3/2006

The Direct Readout Laboratory (DRL) is pleased to announce a new release of the "Construction Record Lister" software package (Version 1.01). This Java program displays—in human readable form—the contents of a Production Data Set (PDS) construction record. For Terra and Aqua, the construction record
component of the PDS contains the instrument Level-0 metadata.

You may access this new version on the Direct Readout Web Portal at:

http://directreadout.sci.gsfc.nasa.gov/index.cfm?section=downloads

Let us know if you have any questions, which may be directed either to our "Contact Us" system or to Kelvin Brentzel directly.

On the Road to NPP – 9/22/2006

The GSFC Direct Readout Laboratory (DRL) is pleased to update the Direct Readout community on the present state of the open source technology suite on the road to the NPOESS Preparatory Project (NPP).

The DRL is developing a Direct Readout technology framework following a Modular Components Approach (MCA) Model.  This MCA has many benefits but, foremost, in response to your requests for the NPP era, the DRL will promote platform-independent code, consistent interfaces, and enhanced data product portability.  Click here for more information. (We will update this material as it evolves.)

A very important note:  We are working closely with the science discipline teams from Land, Ocean, and Atmosphere to bring you standalone versions of Science Processing Algorithms (SPAs).

Status:
The technology suite under development and select Terra/Aqua SPAs are running on the DRL's publicly-accessible computing cluster.  At present the NISGS/IPOPP technology suite is producing 10 Level-2 products for every Terra and Aqua pass, 24/7.  The new location for accessing products, meta-data (w/product traceability), and ancillaries is:

ftp://is.sci.gsfc.nasa.gov/

Let us know if you have any questions, which may be directed either to our "Contact Us" system or, if necessary, to Patrick Coronado or Kelvin Brentzel directly.

RT-STPS Version 3.06 Released – 6/14/2006

The DRL is pleased to announce a new release of the Real-time Software Telemetry Processing System (RT-STPS) (Version 3.06). This version features more robust handling of socket output channels. It includes an interface to the NISGS Status/Event Logging System (NSLS), and NSLS is bundled with the Version 3.06 distribution now available for download. Version 3.06 incorporates Java Service Wrapper (JSW) support to allow the RT-STPS Server to be installed as a system service on both Windows and Linux platforms, and the code has been recompiled under Java Development Kit (JDK) Version 1.5. Lastly, we have provided enhanced installation procedures for both Windows and Linux platforms.

Click here for more information on RT-STPS.

Click here to download RT-STPS Version 3.06.

Simulcast Version 3.0 Released – 5/9/2006

The DRL is pleased to announce a new release of the Simulcast toolkit (Version 3.0). Simulcast is a multi-mission tool that allows users to select and view quicklook instrument data, in real time and with a single client. Simulcast is presently being developed under Java 1.5. Enhancements in Version 3.0 include:

• Real-time geolocation and pseudo-calibration, and projected on Mercator and Polar map for MODIS
• Reorganized Client windows to maximize viewable image area
• Auto Day/Night mode to allow passes near a pole to be viewed in TrueColor mode during the day portion, and Infrared mode during the night portion
• Satellite orbits predicted (at present: Aqua and Terra) and projected on Mercator and Polar map

Click here for more information on Simulcast.

Click here to download Simulcast Version 3.0.

Ground Based Attitude Determination (GBAD) Software Version 2.5 Released – 5/2/2006

The DRL is pleased to announce a new release of the Ground Based Attitude Determination (GBAD) processing software (Version 2.5). Version 2.5 incorporates syntax enhancements that previously inhibited compilation using the GCC 3.4.4 Compiler, and includes modifications for execution on both 32-bit and 64-bit Intel-compatible machines. Although consideration was given to rendering this modification machine-independent, we are not able to verify correctness on all platforms.

Click here to download GBAD Version 2.5.

Earth Observer Article on 2005 Direct Readout Meeting - March/April 2006

In its March/April 2006 edition, The Earth Observer pubished an article about the International EOS/NPP Direct Readout Meeting 2005. The meeting was held October 3 - 6 at the Mediterranean Agency for Remote Sensing and Environmental Control (MARSec) in Benevento, Italy.

Click here to download the article (pdf).

Institutional Algorithms - 08/19/2005

Institutional Algorithms are no longer provided on the Direct Readout Portal.

DRL News, 1999 - 2003

Simulcast software release, Patrick Coronado, 8 May 2003

MODIS Institutional Algorithm Release, Patrick Coronado, 4 May 2003

New Lookup Tables for Direct Broadcast Level 1B code, Christopher Lynnes, 15 April 2003

Release 2.2 of MODIS Level 1 Direct Broadcast software, Christopher Lynnes, 11 April 2003

FTP site for GSFC MODIS Level 1 direct broadcast data, Christopher Lynnes, 14 February 2003

New Survey of DB Sites Worldwide, James Dodge, 25 November 2002

Aqua Direct Broadcast Science Data availability, Kelvin Brentzel, 16 July 2002

Release 2.0 of MODIS Level 1 Direct Broadcast software, Christopher Lynnes, 27 June 2002

Aqua TLE availability, Kelvin Brentzel, 5 June 2002

MODIS Level-2 Algorithm Release, Pat Coronado, 24 May 2002

AQUA GBAD Algorithm Release, Pat Coronado, 16 May 2002

MODIS Fire Detection Algorithm, Patrick Coronado, 3 April 2002

Real-Time Software Telemetry Processing System (RT-STPS), Pat Coronado, 4 February 2002

NEpster release, Pat Coronado, 3 December 2000

Patch available for MODIS L1 software, Chris Lynnes, 11 October 2001

Release 1.1 of MODIS Level 1 Processing software, Chris Lynnes, 5 October 2000

File specifications for the MODIS Level 1 and Geolocation files, Chris Lynnes, 8 September 2000

Release 1.0 of MODIS Level 1 Processing software, Chris Lynnes, 6 July 2000

Terra Frame Processing Software, Pat Coronado note, 2 May 2000

Alpha release of MODIS L1 software, Chris Lynnes note, April 2000

Raw MODIS data is available for FTP download, Pat Coronado memo, March 1999