A SHIP TERMINAL FOR USE WITH THE MARISAT SYSTEM
The paper describes a new ship satellite communication terminal currently under development for use with the Marisat System. The new terminal has been designed to make optimum use of the automatic features of the Marisat system. Extensive use is made of a microprocessor in the design both to handle the digital data and to provide control and operator interface. Almost all the operator interface is via the teleprinter keyboard and extensive use is made of interactive operator controls. This technique reduces the number of tediously repetitive operations which have to be remembered and thus reduces the chances of operator error. However, perhaps more important, this type of software control technique provides much greater flexibility when future changes or extensions of this system are being considered. Antenna steering is controlled via the microprocessor. It converts the operator inputs from the keyboard to appropriate servo control signals during initialization and then drives the step tracking and gyro azimuth control after initialization to provide automatic tracking of the satellite.
- Symposium on Maritime Telecommunication Electronics held April 26-28, 1976 in San Diego, California.
Radio Technical Commission for Marine Services/Federal Communications Commission
Washington, DC USA 20554
- WILLIAMS, W P
- Publication Date: 1976
- Pagination: 8 p.
- Volume: 4
- TRT Terms: Antennas; Communication systems; Human machine systems; Microprocessors; Navigational satellites; Satellite communication
- Old TRIS Terms: Antenna systems; Man machine communications; Microprocessor applications
- Subject Areas: Marine Transportation; Operations and Traffic Management; Safety and Human Factors;
- Accession Number: 00159504
- Record Type: Publication
- Source Agency: Radio Technical Commission for Marine Services
- Files: TRIS
- Created Date: Aug 31 1977 12:00AM