DESIGN OF A DATA TRANSMISSION SYSTEM FOR USE OVER SEA WATER

DESIGN OF A DATA TRANSMISSION SYSTEM FOR USE OVER SEA WATER

A communications link over sea water between two low antennas is investigated. Both analog and binary data are to be transmitted with high reliability, and the transmitter is required to be light, rugged and simple to maintain. PCM-FM is shown to be superior to other modulation techniques under thes...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: Wilmer, Michael E
Format: Report
Sprache:eng
Schlagworte:
ANALOG SYSTEMS
CODING
DATA TRANSMISSION SYSTEMS
DIGITAL SYSTEMS
FREQUENCY MODULATION
Non-radio Communications
PULSE AMPLITUDE MODULATION
PULSE COMMUNICATIONS
PULSE FREQUENCY MODULATION
SEA WATER
SHIP ANTENNAS
WAVE PROPAGATION
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Beschreibung
Zusammenfassung:A communications link over sea water between two low antennas is investigated. Both analog and binary data are to be transmitted with high reliability, and the transmitter is required to be light, rugged and simple to maintain. PCM-FM is shown to be superior to other modulation techniques under these conditions. Propagation loss and system noise power are calculated at various frequencies in order to choose an optimum carrier frequency. (Author)