Accession Number : AD0819180

Title :   DESIGN OF A DATA TRANSMISSION SYSTEM FOR USE OVER SEA WATER.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Wilmer, Michael E.

Report Date : 08 SEP 1966

Pagination or Media Count : 32

Abstract : 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)

Descriptors :   (*DATA TRANSMISSION SYSTEMS, SEA WATER), SHIP ANTENNAS, ANALOG SYSTEMS, DIGITAL SYSTEMS, PULSE COMMUNICATIONS, PULSE FREQUENCY MODULATION, PULSE AMPLITUDE MODULATION, WAVE PROPAGATION, CODING, FREQUENCY MODULATION.

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE