Other
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....9389b&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #9389
Other
Scientific paper
The OMEGA imaging spectrometer on the Mars Express mission is designed to obtain a global coverage of the surface of Mars with a pixel size of 2--4 km in 352 spectral channels extending from 0.36 μm to 5.1 μm as well as high resolution observations (pixel size ˜400 m) of regions of interest (˜5% of the Mars surface). The observation strategy required to achieve these goals must take into account the following constraints from the mission: - the repeat cycle which brings the footprint back to the same area (initially 13 orbits, 11 orbits later in the mission) - the drift in latitude (2.2^o) and longitude (1.2^o) of the pericenter during each cycle - the resulting changes in illumination conditions along the track - the availability of each orbit for observations (1 out of 3 reserved for downlink) - the data volume available for OMEGA, which depends on the Earth-Mars distance - the compatibility with the requirements of other experiments The strategy for scientific observations with OMEGA has been implemented using the MAPPS and MIRA Mars Express planning tools, based on regions of interests for OMEGA. Example strategies will be presented for both the global and high resolution requirements. Both will require off-nadir pointing capability so as to fill gaps in the global mapping and to achieve contiguous high resolution observations by mosaicking the footprints from successive cycles.
Bibring Jean-Pierre
Gondet Brigitte
Langevin Yves
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