DRL 2007 Highlights

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.