Accession Number : ADB053186

Title :   HF Radio Communications System Design Assessment. Task 3.3e Current Practices in Data Transmission.

Descriptive Note : Technical rept. no. 5, 1 Jan-18 Jul 80,

Corporate Author : ROCKWELL INTERNATIONAL RICHARDSON TX COLLINS COMMUNICATIONS SYSTEMS DIV

Personal Author(s) : Dougherty, Steven ; Ambrose, John E.

Report Date : 18 JUL 1980

Pagination or Media Count : 229

Abstract : Contents: Overview-- Army Requirements for Data Transmission, Terminal Equipments, Operational Scenarios, System Synthesis, HF CHannel Characteristics, Ionosphere, Vertical Ionograms, Oblique Incidence Propagation, Multipath Propagation Times, Frequency Spread, Performance Degradation, Channel Model for Simulation; Technical Discussion-- Frequency Multiplexing Modems, Kineplex modems, Kathryn Modem, Andeft Modem, ANDVT Modem, BR Communications Modems, Time Diversity Modems, Rockwell-Collins 4800 BPS Modem, Harris Vinson Autovon Terminal, Modem Implementation, Summary, Conclusions and Recommendations.

Descriptors :   *COMMUNICATION AND RADIO SYSTEMS, *DATA TRANSMISSION SYSTEMS, *HIGH FREQUENCY, AUTOMATIC VOICE NETWORK, MILITARY REQUIREMENTS, MODEMS, CHANNELS, DEGRADATION, SPREAD SPECTRUM, FREQUENCY DIVISION MULTIPLEXING, MULTIPATH TRANSMISSION, IONOGRAMS, IONOSPHERIC PROPAGATION, ADAPTIVE COMMUNICATIONS, SCHEMATIC DIAGRAMS, SPECIFICATIONS.

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE