Accession Number : AD0758003

Title :   Shipboard HF Transmitting Antenna System Design and Utilization Criteria for Ionospheric Path Circuits.

Descriptive Note : Research and development rept. Jul 71-Sep 72,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : Guyader,H. W. ; Horn,J. M.

Report Date : 02 JAN 1973

Pagination or Media Count : 91

Abstract : The report presents the results of a study to develop design guidance for a shipboard hf transmitting antenna subsystem in its total environment for ionospheric path communications to 7000km and to predict hf communications system performance for comparison with CNO Mid-Range Plan requirements. Environmental parameters are shown to exert the largest influence on circuit reliability; an antenna's average gain is shown to be an extremely important parameter; and data rate is shown to be the determining factor in requirements for circuit reliability at a given range in terms of numbers and types of modems, levels of diversity, receivers, transmitters, and transmitter power. (Author)

Descriptors :   (*SHIP ANTENNAS, COMMUNICATION AND RADIO SYSTEMS), HIGH FREQUENCY, GAIN, IONOSPHERIC PROPAGATION, PREDICTIONS, COMPUTER PROGRAMMING

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE