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Proceedings Paper

Landsat - An Unmanned Space Platform
Author(s): Joseph R. Schulman
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Paper Abstract

Landsats 4 and 5, the latest in the series of unmanned earth observation satellites, are used as the space platform for two remote sensing, mechanical scanning instruments: the multispectral scanner (MSS) and the recently developed thematic mapper (TM). The primary objective of the experimental portion of the Landsat 4 and 5 missions is to assess the capability of the TM to provide improved information relative to the MSS. The higher spatial resolution of the TM over the MSS requires a higher degree of flight segment attitude stability than the earlier Landsats; therefore, a more stable, low-orbit space platform must be provided. This paper describes the orbital, electrical, mechanical, and thermal chihracteristics of Landsat 4 and 5 flight segment with special emphasis on the TM and MSS interfaces. Also described are flight segment disturbances caused by the TM and MSS scanning mirrors, motion from the Tracking and Data Relay Satellite (TDRS) antenna, solar array, and the attitude control system (ACS).

Paper Details

Date Published: 23 October 1984
PDF: 11 pages
Proc. SPIE 0493, Optical Platforms, (23 October 1984); doi: 10.1117/12.943811
Show Author Affiliations
Joseph R. Schulman, NASA/Goddard Space Flight Center (United States)


Published in SPIE Proceedings Vol. 0493:
Optical Platforms
Charles L. Wyman, Editor(s)

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