Concept-Level Analytical Procedures for Loading Nonprocessing Communication Satellites with Direct-Sequence, Spread-Spectrum Signals

by Edward Bedrosian, Gaylord Huth


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The analysis presented in this report is concerned with the use of direct-sequence, spread-spectrum signals in nonprocessing satellites. Such signals are designed to provide protection against jamming. Direct-sequence, spread-spectrum signals mitigate the effects of jamming by spreading the energy of the desired signal over a much wider bandwidth than is required when using conventional nonantijam signaling techniques. This spreading is done by using a suitable pseudorandom sequence, which makes it possible to recover the desired information content while rejecting much of the interference from jammers and friendly signals that occupy the same signaling band.

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