In cases in which the carrier signal-to-noise level is not very strong, a aquot;threshold extensionaquot; receiver is used. Space systems widely utilize this type of receiver. The local oscillator is replaced by a voltage- controlled oscillator (VCO), and this anbsp;...
Title | : | Manual of satellite communications |
Author | : | Emanuel Fthenakis |
Publisher | : | McGraw-Hill Companies - 1984 |
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