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Landsat Status and Plans

Landsat Status and Plans. February, 2008 Lyndon R. Oleson U.S. Geological Survey Earth Resources Observation and Science (EROS) Center Sioux Falls, SD. Status of Landsat. Landsat 5 Status.

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Landsat Status and Plans

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  1. Landsat Status and Plans February, 2008 Lyndon R. Oleson U.S. Geological Survey Earth Resources Observation and Science (EROS) Center Sioux Falls, SD

  2. Status of Landsat

  3. Landsat 5 Status • Landsat 5 imaging was suspended on October 6, 2007 due to a loss of a cell within one of two batteries. • The Landsat Flight Operations Team has been characterizing and testing a new battery configuration and developing and testing a new operations strategy and plan. • The Team successfully tested imaging with the Landsat 5 Thematic Mapper instrument on January 10, 2008 during a pass over Brazil and Argentina. • New operations plans have been completed and tested and “normal” operations are expected by the end of the week of February 25.

  4. Landsat 7 Status • Landsat 7 operations were nominal and the Flight Operations Team continues to monitor the health, safety, and performance of the spacecraft on a real-time, daily, mid-term and long term basis. • However, the Landsat 7 Enhanced Thematic Mapper instrument continues to operate without the scan-line corrector (SLC) which reduces its suitability for certain applications.

  5. L7 SLC-off Gap-Fill

  6. SLC-off Filled 12 June 2001, L7 29 December 2004, L7 Sumatra Lat: 5 06 45.70 Long: 95 20 38.38

  7. Closeup of Gap-Fill Adapted from Maxwell et al., in print.

  8. Landsat Data Continuity Mission • LDCM Goal: The LDCM will continue the acquisition, archival, and distribution of multi-spectral imagery affording global, synoptic, and repetitive coverage of the Earth's land surfaces at a scale where natural and human-induced changes can be detected, differentiated, characterized, and monitored over time.

  9. Importance of Landsat Data Continuity • The success of LDCM depends on the complete integration of LDCM data with past, present, and future Landsat and other remotely sensed data for the purpose of observing and monitoring global environmental systems. Continuity elements include: • Spectral • Consistent and comparable spectral characteristics • Rigorous calibration / cross-calibration • Spatial • Consistent and comparable data geometry including resolution and WRS-2 • Aggressive global acquisition strategy • Temporal • Minimum of 16 day repeat cycle • Ongoing acquisitions (no data gaps)

  10. LDCM is a NASA / USGS Partnership • NASA will: • Acquire the space segment, mission operations systems, and launch services • Perform overall mission systems engineering and integration • Manage space segment early on-orbit evaluation phase - from launch to acceptance • After on-orbit acceptance, operations are transferred to the USGS

  11. NASA / USGS LDCM Responsibilities • USGS will: • Acquire and operate the ground system including data networks, image collection scheduling, archive, processing, and distribution systems • Perform ground system integration and support mission integration • Operate and maintain the LDCM mission following on-orbit acceptance • Chair and fund the Landsat Science Team

  12. LDCM Procurement Status • Instrument: Operational Land Imager (OLI) contract awarded to Ball Aerospace (Boulder, CO) summer 2007 • Launch Vehicle: Contract awarded to Lockheed Launch Services for an Atlas V in fall 2007 • Spacecraft: To be procured via NASA’s Rapid Spacecraft Development Office in mid-2008 • Flight Operations System: RFP expected in first half of 2008 • Ground System: RFP planned in 2008-2009 • LDCM launch planned for July 2011 • Followed by 90 day on-orbit checkout and acceptance

  13. Major LDCM Mission Requirements • 5 year mission design life with 10 years of consumables • Support seasonal, global, image data collection (Similar to Landsat 7) • World Reference System (WRS) - 2, mid-morning equatorial crossing, 16 day repeat • 30 m GSD for VIS/NIR/SWIR, 15m GSD for PAN • 9 spectral bands • Instrument data will be quantized in 12-bits • Collect, ingest, and archive at least 400 global WRS-2 scenes/day for U.S. archive

  14. Major LDCM Mission Requirements • Provide “standard”, orthorectified data products within 24 hours of observation – within quality and cloud cover assessments • Products available via the web at no cost • Calibrate data consistently with previous Landsat missions • Continue International Cooperator (IC) downlinks • Support priority imaging and a limited off-nadir collection capability

  15. Operational Land Imager Spectral Bands *Contingent upon requirement trades between program elements, technical elements, and mission risk as part of the LDCM procurement. OLI does not include thermal imaging capabilities

  16. LDCM Standard Product Specifications (L1T) • Product type: L1T (orthorectified, terrain-corrected) • Pixel size: 15/30 meter • Output format: GeoTIFF • Map projection: UTM (considering polar stereographic projection for Antarctica) • Orientation: North up • Resampling: Cubic convolution • Media type: No-cost download (web-enabled) with no electronic media options

  17. Landsat Science Team • Co-chaired by the USGS Landsat Science Lead, Tom Loveland, and the NASA LDCM Project Scientist, Jim Irons • USGS selected 18 science team members in October 2006 • 9 PI’s from academia and private industry • 6 federal PI’s • 3 international PI’s • Curtis Woodcock, Boston U., selected as Team Leader

  18. Landsat Science Team Members

  19. Landsat Science Team Members (cont.)

  20. Landsat Data Continuity Mission • More information: http://ldcm.usgs.gov http://ldcm.nasa.gov

  21. Looking to LDCM: Standard L1T • Scope requirements via Pilot • Landsat infrastructure • Bandwidth requirements • Right recipe? • Pilot Dataset • US only – includes Alaska, Hawaii, & territories • L7 ETM+ SLC-off only – 2003 to present (and ongoing) • < 10% cloud cover, 9 quality • Processed product (unlike other archive holdings) • Available via FTP on 4 June 2007

  22. Parameters of Standard L1T • Parameters chosen by: • Current ordering statistics • Vetted through Landsat Scientists • Pixel size: 14.25m/28.5m/28.5m • Media type: Download (no charge), CD/DVD ($50) • Product type: L1T (terrain-corrected) • Output format: GeoTIFF • Map projection: UTM • Orientation: North up • Resampling: Cubic convolution

  23. Future of Land Imaging in U.S. • The White House has initiated a year-long study called The Future of Land Imaging • To explore options for United States operational use of satellites to better serve society. • The USGS, along with NASA, NOAA and other agencies, serves on the leadership team of this Federal interagency working group. • In August, 2007, the Bush Administration released a plan for a U.S. National Land Imaging Program • to achieve a stable and sustainable U.S. operational space-based, moderate-resolution land imaging capability • designates the Department of the Interior (w/ USGS) as the host of the program • For more information visit http://www.landimaging.gov

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