REPORT
Space assets are vital to the economic, social, and military interests of the United States, but these interests can conflict with one another, especially when it comes to space system sustainment. The authors worked with Air Force Space Command to develop a sustainment philosophy based on separation of demand, supply, and integrator processes and clear definition of responsibilities, using specific systems and units for illustration.
REPORT
The Department of Defense does not own all the satellite communications capacity it needs worldwide and must purchase capacity from commercial vendors. Understanding what contributes to growth in satellite communications capacity and predicting that growth would be useful to planners in their decisions to lease or buy capacity. The author shows that the market can adjust swiftly to a surge in demand, and thus there may be little need to…
REPORT
The Department of Defense needs far more satellite communications capacity than it owns and thus must lease satellite communications services. Communications planners can use the "rule of thumb" set forth in this study to aid in making efficient satellite leasing decisions in the face of uncertain demand for satellite services. It is a simple, graphical technique. Extensions to the basic model show how price uncertainty and the ability…
REPORT
Presents the analytical procedures and mathematical formulations required to construct a computer model of a military communication satellite system, load it efficiently with the radio signals required to support an operational scenario ...
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This report presents the results of a theoretical analysis of a frequency-hopping, multiple-frequency-shift-keyed, spread-spectrum communication system using a nonprocessing communication satellite transponder.
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Military satellite communication systems will cost taxpayers billions of dollars. The magnitude of these costs and their distribution in the economy will be directly affected by whether public policymakers choose to lease or to buy these systems.
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Examines passive communication satellites as alternatives to active communication satellites in the hostile environment that may exist in the postattack period of a nuclear war.
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A passive communication satellite is attractive for relaying strategic messages between distant points under conditions where active communication satellite and other terrestrial links have been negated.
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Develops a model for estimating in a new way the statistical distributions of signal attenuation, sky noise temperature, and total atmospheric-induced degradation.
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Satellites provide a powerful new means for distributing the communication media we have. Today at least 30 distinguishable media and multimedia combinations can be transmitted via satellite--where "medium" means a method of originating, encoding, t...
REPORT
International and domestic point-to-point communication satellite systems are expected to multiply throughout the decade. In developed regions, they will remain auxiliary to the overall ground communication complex, even though very significant in d...
REPORT
A general approach for the efficient use of satellite orbits and the radio frequency spectrum. The protection of received signals, equipment capabilities, and pertinent systems considerations are reviewed before systematically examining the principa...
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A discussion of means of sharing the radio frequency spectrum above 3400 MHz among terrestrial microwave relay, satellite relay, and satellite earth stations for fixed or mobile communication services, including direct broadcast from satellites. Eac...
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An evaluation of digital transmission techniques for miltiple access to a communication satellite. Specific features of digital techniques are examined: time-division multiplexing, error correction codes, analog-to-digital conversion methods, and syn...
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A mathematical description of a specific method for allocating time and frequency in communication satellite systems that use time-frequency multiplexing for multiple random access. This method of constructing addresses from a time-frequency matrix c...
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A review of the field of power amplification at communication satellite frequencies.
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Presentation of a method for obtaining a navigation capability as a bonus to a communication satellite system. The Memorandum is primarily concerned with the technology of determining a user vehicle's position from a single satellite by obtaining mu...
REPORT
A restatement (with minor revisions) of material presented in "Design and use of an early communication satellite system," RM-3514, July 1963. The paper discusses technical factors of small ground terminal parameters, capacity for antenna patterns, c...
REPORT
(1) combines all sources of noise, including rain, as a function of frequency and elevation angle; and (2) presents estimates of time distributions of degradation of the down link due to rain for various system noise temperatures in the absence of rain.
REPORT
An assessment of the implications of transistorized cables for communication satellite research and development.
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