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Clementine
was a joint DOD/NASA effort that was undertaken to test light-weight
sensors and electronics for military and civil applications.
The BMDO/NRL/LLNL team designed, developed and launched the
Clementine spacecraft in two years. The Clementine spacecraft
imaged the whole Moon at high resolution in 11 spectral bands
while also providing partial coverage in other 6 spectral
bands. During a period of two months over 5,000 Moon images
were received on each orbit with images arriving almost every
5 hours. Most of the data was compressed in the satellite
using JPEG type of compression. During the mission ACT processed
over 240 Gbytes of multispectral image data.
ACT
was responsible for all front end image processing effort
related to the Mission Operations of the Clementine Satellite
Program. ACT's support to Clementine included management,
planning and execution of the following:
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Design
and evaluation of data compression parameter sets to be
used by the Clementine program. |
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Development
of custom Image Processing Software. |
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Image
processing system integration using low cost high performance
hardware. ACT's PC based MSHELL workstations were used
to perform all the Mission operations image processing.
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24/7
image processing support for:
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Quick-look
sensor data analysis (image decompression and basic
image statistics were used to establish that sensors
were operating within the right performance bounds).
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Pointing
assessment (pointing computation and validation
through map projections). |
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Archival
and formatting of all the image data into the Planetary
Data System Format (PDS). |
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Production
of quick-look results (radiometric, images, mosaics).
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ACT
established the equivalent of a Remote Access Center for Clementine
Data. This center allowed members of the Mission Operations
group to have access to all image data over the local area
networks including Internet.
In
recognition of its efforts and contribution to Clementine
ACTs was presented with a NASA Exceptional Scientific
Achievement Award:
For
the processing of all the Clementine images and necessary
ancillary information in a form compatible with NASA's planetary
data system and the preparation of an archival data set
for broad distribution to the scientific community.
ACT continues
to work with NASA on the inflight calibration of the Clementine
cameras.
Please
click here to browse Clementine
Interactive.
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