Some Technical Factors Affecting the Feasibility of Direct Broadcasting from Earth Satellites

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Various technical factors affect the feasibility of broadcasting to the general public from satellites, the most satisfactory orbit for such satellites, and the order of satellite primary power that would be required for Band 7-MM (HF), Band 8-FM (VHF), Band 8-TV (VHF), Band 9-TV (UHF) and Band 10-TV (SHF) transmissions. These factors are discussed on the assumptions that no major changes will be made in present transmission standards, frequency allocations, or home receiving equipment; that equatorial synchronous orbit is considered the most satisfactory for broadcasting because it will permit uninterrupted transmission throughout the entire day and does not require complex tracking antennas for receiving, since a satellite in such an orbit remains stationary with respect to a given point on earth. Chief among the many formidable technical problems still to be solved before high-quality broadcasting from space satellites can be considered feasible are the development of precise orientation and stabilization systems for accurately “aiming” the satellite's transmitting antenna, and the development of high-capacity power supplies and other system components of such size, weight and reliability that will permit continuous operation of a broadcasting station in a precise stationary orbit, without maintenance, for a period of time that will justify its operation economically.
Publication Date: 1962-06-01
DOI: 10.5594/J12121
Link: https://doi.org/10.5594/J12121
Author(s): Edgar T. Martin, George Jacobs

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Edgar T. Martin and George Jacobs; Some Technical Factors Affecting the Feasibility of Direct Broadcasting from Earth Satellites, Journal of the SMPTE ( Volume: 71, Issue: 6, June 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J12121

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Edgar T. Martin and George Jacobs; Some Technical Factors Affecting the Feasibility of Direct Broadcasting from Earth Satellites, Journal of the SMPTE ( Volume: 71, Issue: 6, June 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J12121

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<span class="citation">Edgar T. Martin and George Jacobs; <cite>Some Technical Factors Affecting the Feasibility of Direct Broadcasting from Earth Satellites</cite>, Journal of the SMPTE ( Volume: 71, Issue: 6, June 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J12121" target="_blank" rel="noopener">https://doi.org/10.5594/J12121</a></span>

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Edgar T. Martin and George Jacobs; <cite id="bib-10-5594-j12121">Some Technical Factors Affecting the Feasibility of Direct Broadcasting from Earth Satellites</cite>, Journal of the SMPTE ( Volume: 71, Issue: 6, June 1962); SMPTE, 1962
<span class="doi">10.5594/J12121</span>
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