Computer Science – Performance
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.571e..16d&link_type=abstract
Proceedings of The 4S Symposium: Small Satellites, Systems and Services (ESA SP-571). 20 - 24 September 2004, La Rochelle, Franc
Computer Science
Performance
Scientific paper
An imaging constellation mission is proposed to provide near-continuous surveillance of regional activity. By introducing a multiple plane constellation of small Earth Observation satellites, it is possible to monitor selected parts of the entire globe several times during daylight. Using off-the-shelf microsatellites ensures the program is responsive in the deployment phase as well as in the operational phase. The paper describes the basic Disaster Monitoring Constellation programme as has been implemented, which already delivers daily imagery. It also describes the system trades of the regional imaging constellations, and outlines the scope of the performance that could be obtained from such a system. A cost model illustrates that the balance between launch and space segment costs must be reached by considering suitable replacement strategies, and that the system is highly sensitive to requirement creep. Finally, it is shown that the use of cost effective, small satellites leads to solutions previously thought to be out of reach of Earth Science and Government customers.
Boland Lee
da Silva Curiel Alex
Davies Phil
Eves Stuart
Sun WaiChing
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