Satellite orbit considerations for a global change technology architecture trade study

Details Satellite orbit considerations for a global change technology architecture trade study Satellite orbit considerations for a global change technology architecture trade study

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gcta.rept...91h&link_type=abstract

In its Global Change Technology Architecture Trade Study p 91-108 (SEE N92-15464 06-45)

Other

Climate Change, Climatology, Earth (Planet), Earth Observations (From Space), Satellite Observation, Satellite Orbits, Crossings, Longitude, Space Station Freedom, Temperate Regions

Scientific paper

A study was conducted to determine satellite orbits for Earth observation missions aimed at obtaining data for assessing global climate change. A multisatellite system is required to meet the scientific requirements for temporal coverage over the globe. The best system consists of four Sun-synchronous satellites equally spaced in local time of equatorial crossing. This system can obtain data every three hours for all regions. Several other satellite systems consisting of combinations of Sun-synchronous orbits and either the Space Station Freedom or a mid-latitude equatorial satellite can provide three to six hour temporal coverage, which is sufficient for measuring many of the parameters required for the global change monitoring mission. Geosynchronous satellites are required to study atmospheric and surface processes involving variations on the order of a few minutes to an hour. Two or more geosynchronous satellites can be relocated in longitude to study processes over selected regions of Earth.

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