Pulse or digital communications – Repeaters – Testing
Patent
1985-02-15
1987-12-29
Cangialosi, Salvatore
Pulse or digital communications
Repeaters
Testing
380 34, H04L 700
Patent
active
047165740
ABSTRACT:
In a signal transmission system for broadband signals wherein the transmitting transducer and/or the receiving transducer has a non-isotropic radiation characteristic, properties of the received broadband signal, for example waveform shape, spectrum, duration and probability density function, depend on the alignment orientation of the transducers. A discriminator circuit is provided in the receiver for identifying or estimating parameters related to one or more of such properties as a measure of alignment orientation of the transducers. The invention can be utilized, for example, in noise-suppressing radio frequency message transmission systems wherein band spreading modulation (spread-spectrum-system) results in transmission of a much greater bandwidth than a conventional transmission of the message baseband frequencies.
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Peter Honold, "Secondary Radar", 1976, Siemens AG, Berlin and Munich, Hevden & Son Ltd., London, pp. 46-52.
Baier Paul W.
Rausch Peter
Cangialosi Salvatore
Siemens Aktiengesellschaft
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