Home » Satellite Instruments » EO-1 Advanced Land Imager (ALI)
EO-1 Advanced Land Imager (ALI)
STATUS
Operational
AVAILABILITY
Archival data can be viewed and ordered from the USGS Eros Data Center archive at no-cost. http://edcsns17.cr.usgs.gov/EarthExplorer/
REQUEST PROCEDURE
Data requests are submitted through the USGS http://eo1.usgs.gov/DARInstructions.php
Satellite Instruments
The Advanced Land Imager was designed as a prototype for the Landsat Data Continuity Mission and launched in November 2000 on the EO-1 satellite flying in formation with Landsat 7 and Terra/MODIS. EO-1 was the first mission in NASA's New Millenium Program, had a one year design life, and focused on validation of new technologies. Instruments have performed almost flawlessly, and the mission operations funding has been extended through 2011, with ALI serving as an alternative to Landsat 7 and providing a testbed for development of advanced sensor web technology. The multispectral bands of ALI are similar to Landsat, but ALI has improved 12 bit A/D conversion, an enhanced 10m panchromatic band, an additional blue band 1p, and an additional SWIR band 5p. Band 4 of Landsat is divided into two bands, 4 and 4p. Multispectral Bands Wavelengths:(nm) Band 1p 433 – 453 Band 1 450 – 515 Band 2 525 – 605 Band 3 630 – 690 Band 4 775 – 805 Band 4p 845 – 890 Band 5p 1200 - 1300 Band 5 1550 - 1750 Band 7 2080 - 2350 Panchromatic Band Wavelength:480 - 690
CONTACT
Joseph Young
NASA Goddard Space Flight Center
Goddard Space Flight Center Greenbelt, Maryland 20771
301-286-8146
joseph.p.young@nasa.gov
SPECIFICATIONS
Measurment TypeVisible/IR-imager
Platform TypeEO1
OrbitSun synchronous
Spectral CoverageHyperspectral
Active/PassivePassive
Scan PatternPush broom
VariablesHigh resolution land surface mapping
Altitude705 x 685
Inclination98.2
Repeat TimeFive times every 16 days: Once for nadir and four times for non-nadir
Wavelength433 to 2350nm
Number of Bands7 multispectral + 1 panchromatic
Start DateNov 2000
Temporal CoverageSatellite is in the extended mission phase and is being maneuvered to maintain the descending node MLT very near 10:00 am. It is no longer flying in formation with Landsat 7 as of October 2006.
Swath Width37.5
Resolution 130m
Resolution 210m
REFERENCES
Ungar, S.G.; Pearlman, J.S.; Mendenhall, J.A.; Reuter, D.; IEEE Trans. Geosci. Rem. Sens.,41(6), June 2003 1149 - 1159. http://eo1.usgs.gov http://eo1.gsfc.nasa.gov/new/validationReport/index.html
UPDATED ON
7 Oct 2009 14:28