Computer Science – Sound
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa21b1557n&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SA21B-1557
Computer Science
Sound
0310 Airglow And Aurora, 0355 Thermosphere: Composition And Chemistry, 2407 Auroral Ionosphere (2704), 2415 Equatorial Ionosphere, 2494 Instruments And Techniques
Scientific paper
The Paired Ionosphere-Thermosphere Orbiters mission is described and discussed. The mission utilizes a pair of orbiting vehicles in eccentric, high-inclination, coplanar orbits. The orbits have arguments of perigee that differ by 180 degrees and are phased such that one vehicle is at perigee (200 km) while the second is at apogee (2000 km). Half an orbit later, the vehicles switch positions. Three types of science instruments are envisioned to take advantage of this scenario: in-situ instruments that measure, parameters locally, downlooking imagers that provide areal coverage below the satellite, and profilers that measure parameters long a long vertical line-of-sight. The main idea is that in addition to the two point measurements provided by the in-situ instrumentation, context information for the low-altitude measurements is obtained by the high- altitude imagers. In addition, profiling instruments such as sounders and spaceborne lidar can be added to create vertical profiles. Such an observation system is capable of providing elements of global coverage, regional coverage, and coverage in three dimensions. Science goals are presented, as are the results of a detailed implementation plan, including several trade studies on key elements of the mission. The conclusion is that the mission would enable significant new understanding of the ionosphere-thermosphere system within a resource envelope that is consistent with that of NASA's Medium Explorer (MIDEX) line of science missions.
Clemmons James Hart
Jolly Raphael
Nigg D. A.
Walterscheid Richard L.
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