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Proceedings Paper

Design and development of the multispectral payload for TWSAT mission
Author(s): Saji A. Kuriakose; D. Subrahmanyam; S. S. Sarkar; V. D. Patel; Neeraj Mathur
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Paper Abstract

Third World Satellite (TWSAT) is a small satellite of the Indian Space Research Organization (ISRO), weighing approximately 100 kg. This spacecraft will carry a 37-meter ground resolution, four band multispectral optical payload. This is a low cost, quick to develop, payload for studies of coastal regions, forestry, agriculture and related applications. The payload features four identical lens assemblies, each of which is designed to operate in a particular spectral band by using an appropriate band pass filter. The optical design is innovative in being usable over a spectral range of 450 to 860 nm. The design of the lens assembly is very compact, and as a result the payload is also small and commensurate with a small satellite. This payload is expected to reduce cost drastically compared to previous payloads by using qualified, commercial components to a large extent. The mechanical design of the payload features a monolithic, light weighted, aluminum main structure. This structure supports the lens assemblies on one side, and the detector head assemblies on the other side. This paper presents the optical and mechanical design of the electro-optic module, and the various tests proposed to be carried out to qualify the payload for space use.

Paper Details

Date Published: 22 December 2006
PDF: 9 pages
Proc. SPIE 6405, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications, 640516 (22 December 2006); doi: 10.1117/12.693863
Show Author Affiliations
Saji A. Kuriakose, Space Applications Ctr. (India)
D. Subrahmanyam, Space Applications Ctr. (India)
S. S. Sarkar, Space Applications Ctr. (India)
V. D. Patel, Space Applications Ctr. (India)
Neeraj Mathur, Space Applications Ctr. (India)

Published in SPIE Proceedings Vol. 6405:
Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications
William L. Smith Sr.; Allen M. Larar; Tadao Aoki; Ram Rattan, Editor(s)

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