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Summary Overview
Benefits Contacts
The Earth Observing-1 (EO-1) Advanced Land
Imager (ALI) is the first Earth-Observing instrument to be flown under
NASA's New Millennium Program (NMP). The ALI employs novel wide-angle
optics and a highly integrated multispectral and panchromatic spectrometer.
EO-1 is a technology verification project designed to demonstrate
comparable or improved Landsat spatial and spectral resolution with
substantial mass, volume, and cost savings.
MIT Lincoln Laboratory developed
the ALI with NMP instrument team members: Raytheon/Santa Barbara Remote
Sensing (SBRS) for the focal
plane system, and Sensor Systems Group, Inc. (SSG)
for the optical system.
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The Earth Observing-1 (EO-1) Advanced Land Imager (ALI) is a technology
verification instrument under the New Millennium Program (NMP). The focal
plane for this instrument is partially populated with four sensor chip
assemblies (SCA) and covers 3° by 1.625°. Operating in a pushbroom
fashion at an orbit of 705 km, the ALI provides Landsat type panchromatic
and multispectral bands. These bands have been designed to mimic six Landsat
bands with three additional bands covering 0.433-0.453, 0.845-0.890, and
1.20-1.30 µm. The ALI also contains wide-angle optics designed to
provide a continuous 15° x 1.625° field of view for a fully
populated focal plane with 30-meter resolution for the multispectral pixels
and 10 meter resolution for the panchromatic pixels.
The following key technologies are incorporated in the ALI instrument
to achieve its dramatic cost, weight, and performance advantages.
- Silicon Carbide Optics
- Wide Field of View Optics
- Multispectral Imaging Capability
Use of the ALI technologies has the potential
for reducing the cost and size of future Landsat-type instruments by
a factor of 4 to 5.
Don Lencioni
ALI Instrument Scientist
MIT Lincoln Laboratory
Phone: (781)981-7996
Email: Lencioni@ll.mit.edu
Ralph Welsh
ALI Instrument Manager
NASA's Goddard Space Flight Center
Mail Code: 490
Phone (301) 286-9774
Email: Ralph.D.Welsh.1@gsfc.nasa.gov
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