Optical System for Line-Scan Television Satellite

Clyde T. Holliday

doi:10.1117/12.970984

1 August 1967 Optical System for Line-Scan Television Satellite

Clyde T. Holliday

Proceedings Volume 0008, Airborne Photo-Optical Instrumentation; (1967) https://doi.org/10.1117/12.970984
Event: Airborne Photo-optical Instrumentation, 1967, Cocoa Beach, United States

Abstract

The ever increasing demand for more sophisticated meteorological television satellites has inspired several organizations to investigate many unique systems and techniques. The Applied Physics Laboratory of The Johns Hopkins University, operating under contract to the Bureau of Naval Weapons, has undertaken the feasibility study of a line-scan television system for earth observation satellites. The results of this study were considered to be so successful that a limited hardware program was initiated. The television system was designed to be mounted in a gravity-gradient stabilized satellite and launched into a near-earth, sun synchronous orbit. Its lens will have a 84° x 3° field of view that will continuously sweep a wide strip of the earth's surface. The image will be transmitted from the curved focal surface of the spherically symmetrical lens to the face plate of an image dissector tube by an array of fiber optics. Linear mapping in the direction of the satellite travel, transmitted to the ground receiving stations in real time is the obvious advantage of this line-scan system. The photometry that governed the design parameters of the complete optical system are presented. The advantage of using fiber-optics rather than conventional relay lenses to transfer the image from the primary lens to the image-dissector tube are discussed. The basic mission of the television satellite is briefly defined.

Citation Download Citation

Clyde T. Holliday "Optical System for Line-Scan Television Satellite", Proc. SPIE 0008, Airborne Photo-Optical Instrumentation, (1 August 1967); https://doi.org/10.1117/12.970984

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KEYWORDS

Satellites

Televisions

Image resolution

Optical components

Fiber optics

Line scan image sensors

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