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Glossary of Terms
An Automatic Identification System (AIS) is used for identifying and monitoring maritime traffic. AIS sends and receives vessel identification information which can be displayed on a laptop computer or chart plotter. Information such as vessel name, radio call sign, navigational status (eg. at anchor, under way using engine), speed, heading, type of ship/cargo, destination, and estimated time of arrival are all examples of information that can be displayed.
Aids To Navigation (ATONs) are man made objects created to assist mariners in determining the safest course to travel. These objects include buoys, day markers, and lights which employ the use of color, shape and sound to assist in navigation.
Department of Homeland Security
Digital Selective Calling
Enhanced Signal Analysis
Enhanced Signal Analysis Package
Federal Communications Commission
Excerpt from http://www.fcc.gov/aboutus.html
Global Maritime Distress & Safety System (GMDSS) was developed by the United Nations agency, the International Maritime Organization (IMO), as the internationally accepted system of coordinated radio communications (ship-to-ship and ship-to-shore) using satellite and terrestrial networks for commercial vessels.
The GMDSS consists of several systems, some of which are new, but many of which have been in operation for many years. The GMDSS radio carriage requirements depend upon the ship's area of operation, rather than its tonnage. The system also provides redundant means of distress alerting, and emergency sources of power. Recreational vessels are not required to carry GMDSS equipment; however it is strongly encouraged for all vessels on international voyages or traveling greater than 25 nm offshore because of the very efficient communications and rapid distress response. All vessels near shore and on the high seas are strongly encouraged to apply for an MMSI number to allow the use of Digital Selective Calling (DSC) in the case of an emergency.
Automatic Identification System (AIS) has become an important element of the GMDSS monitoring system because of its ability to provide immediate and accurate contact between vessels. To help with the coordination of vessel identity AIS users use the same MMSI numbers assigned to the vessel for GMDSS purposes. The system is backwards compatible with DSC, allowing shore-based GMDSS systems to affordably identify and track AIS-equipped vessels, and is intended to eventually replace the existing DSC-based transponder systems.
The Global Positioning System (GPS) was designed as a dual-use system with the primary purpose of enhancing the effectiveness of U.S. and allied military forces. GPS is rapidly becoming an integral component of the emerging Global Information Infrastructure, with applhttp://www.uscgboating.org/safety/metlife/aton.htmications ranging from mapping and surveying to international air traffic management and global change research.
The basic GPS is defined as the constellation of satellites, the navigation payloads which produce the GPS signals, ground stations, data links, and associated command and control facilities which are operated and maintained by the Department of Defense.GPS permits land, sea, and airborne users to determine their three dimensional position, velocity, and time, 24 hours a day in all weather, anywhere in the world.
International Electrotechnical Commission
Excerpt from http://www.iec.ch/
International Maritime Organization
Excerpt from http://www.imo.org
International Telecommunications Union
Excerpt from http://www.itu.int
Low Noise Amplifier
Maritime Domain Awareness (MDA) has been defined as the effective knowledge of all activities associated with the global maritime environment that could impact the security, safety, economy, or environment of the United States.
All vessels operating on the high seas require a Maritime Mobile Service Identity (MMSI) number to participate in the Global Maritime Distress & Safety System (GMDSS). In addition to GMDSS participation the MMSI number also serves as a unique identifier of the vessel for all communications. As the international governing body for telecommunications the International Telecommunications Union (ITU) has set the international conventions for the use of MMSI numbers. MMSI number is a 9-digit code issued by the host country agency for use in VHF marine radio equipment, AIS transponders, EPIRB's, and all INMARSAT satellite terminals. By international agreement, the ITU sets the rules that determine how MMSI's are assigned and used. In the United States the Federal Communications Commission (FCC) and in Canada Industry Canada (IC) are responsible for actually assigning MMSI's to commercial and recreational vessels.
The Multi-Use Radio Service (MURS) is a low power, short range VHF Citizens Band service in the 150 MHz band reserved world-wide for two-way communications, which allow for transmission of data such as terrestrial and marine movements.
An demodulator technology created exclusively by Shine Micro (patent pending), which demodulates AIS packets both forward and backward for superior reception of noisy, weak signals.
Radio Technical Commission for Maritime Services
Excerpt from http://www.rtcm.org/overview.php
Small Business Innovation Research
Excerpt from http://www.sba.gov/SBIR/indexwhatwedo.html
Safety of Life at Sea
Short Text Messaging
Universal Automatic Identification System
Vessel Traffic Control
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