Page 1 Landsat Data Continuity Mission Status Jim Irons LDCM Project Scientist Earth Sciences Division NASA Goddard Space Flight Center Greenbelt, Maryland.

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Landsat Data Continuity Mission Status

Jim IronsLDCM Project Scientist

Earth Sciences Division

NASA Goddard Space Flight Center

Greenbelt, Maryland

LDCM SRR/MDR/PNAR 22-24 April 2008

October 25, 2012

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Landsat History

Enabling 40 Years of Global Land Surface Observations

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NASA / USGS Parnership

NASA leads development and launch of satellite observatory Spacecraft Two-instrument payload

– Operational Land Imager – OLI

– Thermal Infrared Sensor – TIRS

USGS leads ground system development and post-launch operations Mission Operations Center – MOC Ground Network Element – GNE Data Processing and Archive System (DPAS)

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Project StatusProject Status

Courtesy of Orbital

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Launch

Launch will be from Vandenberg Air Force Base (VAFB), California

Lower stage arrived via Antonov AN-124 aircraft flight on August 27

Upper stage Centaur arrived September 14 via truck

Landsat 8 on schedule for February 11 launch date

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Observatory Testing at Orbital

• The observatory is in the final phases of testing at the Orbital Science Corp. facility in Gilbert, Arizona

• Successfully completed electromagnetic interference / electromagnetic compatibility (EMI/EMC) in August

• Successfully completed dynamics testing (acoustics and vibration) in September

• The final phase of testing, thermal vacuum (T/Vac) began Saturday, October 20

• Shipment to VAFB scheduled for December

EMI/EMC Test Chamber at Orbital

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Integrated Satellite ObservatoryIntegrated Satellite Observatory

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Operational Land Imager (OLI)

• OLI built by Ball Aerospace & Technology Corp. (BATC) of Boulder, CO• Contract awarded in July 2007• Critical design review held October, 2008 • Fully assembled & tested OLI shipped to spacecraft vendor on October 02, 2011

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Fully Assembled OLI

Instrument description 8 VIS/NIR/SWIR bands w/

30 m spatial resolutions one panchromatic band w/

15 m resolution Pushbroom sensor Four-mirror telescope with

front aperture stop Focal Plane Assembly

(FPA) consisting of 14 sensor chip assemblies, passively cooled

Absolute radiometric accuracy < 5%

Mass: 450Kg Operational Power: 160 W Size: 1.8 m x 2 m x 1 8 m

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Thermal Infrared Sensor (TIRS)TIRS built in-house at NASA/Goddard Space Flight Center

TIRS was officially added to the scope of the mission in December 2009Critical Design Review held April 2010Fully assembled & tested TIRS shipped to Orbital on February 08, 2012

TIRS was not added to the payload until western states water managers,with organization by the Western States Water Council, advocated for

restoration of Landsat thermal imaging requirements

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Fully Assembled TIRS

• Instrument description• Two spectral bands at 10.8 and 12

micrometers

• 100 m spatial resolution

• Pushbroom LWIR sensor

• Four-lens telescope

• FPA consisting of three 2-dimensional Quantum Well Infrared Photodector (QWIP) sensor chip assemblies

• Mechanically cooled focal plane; BATC provided cryo cooler

• NEdT @ 300K < 0.4

• Mass: 240 Kg

• Operational Power: 380 W

• Size: 80 cm x 76 cm x 43 cm (with earth shield deployed)

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OLI Spectral Bands

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L7 ETM+ Thermal Band LDCM TIRS Band Requirements

Band 6 60 m LWIR 10.00 - 12.50 100 m LWIR 10.30 – 11.30 Band 10

100 m LWIR 11.50 – 12.50 Band 11

TIRS and ETM+ Spectral Bands

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Top Level Mission Ops Concept - Continuity

Fly Landsat 8 in legacy orbit (705 km, near-polar, sun-synchronous)

Ground tracks maintained along heritage WRS-2 paths with 10:00 a.m. equatorial crossing time & 16 day repeat period

Collect image data for multiple spectral bands (Vis/NIR/SWIR/TIR) across 185 km swath along each path

Provide coverage of global land mass each season by scheduling the collection of 400 WRS-2 scenes per day

Maintain rigorous calibration

Archive data and distribute data products Provide nondiscriminatory access to general public, generate Level 1

data products, distribute data products at no cost upon request

Direct broadcast of data to network of international ground stations having memoranda-of-understanding with USGS

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Web Sites

http://landsat.gsfc.nasa.gov

http://landsat.usgs.gov

http://www.nasa.gov/landsat

FaceBook Page

http://www.facebook.com/NASA.Landsat

Twitter Site http://twitter.com/#!/NASA_Landsat

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Back Up

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February 11, 2013

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Polar Orbits for Global Views

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Urgency

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ETM+ SLC Failure Impact

Note that the images show partial scenes, from the western edge through the scene center.

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LDCM Spacecraft

• Spacecraft contract awarded to General Dynamics Advanced Information Systems (GDAIS) in April, 2008• GDAIS sold to Orbital Sciences Corporation in April 2010

• Space craft will accommodate OLI and TIRS• Provides pointing, power, data capacity, etc. to support LDCM

operations

• Orbital Sciences Corporation is integrating OLI and TIRS onto the spacecraft at their Gilbert, AZ facility and will ship the observatory to the launch site in Autumn 2012

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Ground System Operational ArchitectureGround System Operational Architecture

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