EO 1
Also called Earth Orbiter 1 or Earth Observing 1
The first of three New Millennium Program Earth orbiting missions. EO 1 is an
advanced land imaging mission that will demonstrate new instruments and
spacecraft systems. EO 1 will validate technologies contributing to the
reduction in cost of follow-on Landsat missions. The centerpiece of this
mission is the Advanced Land Imager (ALI) instrument, which is one seventh the
mass, power consumption and volume of the
Landsat 7
imager.
It will match within one minute the
Landsat 7
orbit and collect identical images for later comparison.
The Pulsed Plasma Thrusters aboard successfully performed attitude control
tasks, demonstrating the usefulness of the technology.
Out
of service
|
planned
in 2017
|
Cause
|
|
Decay
|
|
http://eo1.gsfc.nasa.gov/
http://www.swales.com/systems/eo1/
sat-index articles
Prime
contractor
|
Swales
Aerospace
|
Platform
|
ATK
A200
|
Mass
at launch
|
572
kg
|
Mass
in orbit
|
|
Dry
mass
|
370
kg
|
Payload
mass
|
90
kg
|
Dimension
|
1.25m
across flats, 0.73m high -hexagonal right prism)
|
Solar
array
|
|
Stabilization
|
3-axis
|
DC
power
|
EOL:
600 W (experiment needs: 80 W)
|
Design
lifetime
|
5
years
|
Has a GPS receiver for navigation and timeming. 44 Gbit record. Downlink in
X-band at 105 Mbps (XPAA) with a backup in S-band at 2 Mbps.
The ALI instrument will feature ten-meter ground resolution in the
panchromatic (black-and-white) band and 30-meter ground resolution in its other
spectral bands (0.4-2.4 microns), using a four-chip multispectral focal plane
array that covers seven of the eight bands of the current Landsat.
The instrument will provide the first space-based test of an Atmospheric
Corrector for increasing the accuracy of surface reflectance estimates. The AC
enables more precise predictive models to be constructed for remote sensing
applications. It will provide significant improvements in generating accurate
reflectance measurements for land imaging missions. Covers the 0.890-1.600
micron wavelength IR band.
The Hyperion provides a science grade instrument with quality
calibration based on heritage from the
Lewis
Hyperspectral Imaging Instrument. The Hyperion capabilities provide resolution
of surface properties into hundreds of spectral bands versus the ten
multispectral bands flown on traditional Landsat imaging missions. Through this
large number of spectral bands, complex land eco-systems shall be imaged and
accurately classified. The Hyperion provides a high-resolution hyperspectral
imager and can image detailed spectral mapping across all 220 channels with
high radiometric accuracy. It covers the .4-2.5 micron wavelengths atn a
resolution of 30 m.