BOOK_CONTENT
From Global Mobile Satellite Communications: For Maritime, Land and Aeronautical Applications

7.1. Scope of the Cospas-Sarsat System

Vessels sink or become disabled, airplanes crash in disasters, land vehicles and expeditions get lost in the wilderness and other causal emergencies occur that jeopardize many lives and property at sea, in the vast inland regions and air space of the entire world. Continuous advances in technology and rapidly improved use of radio communications has been an historic objective of those charged with solving the Search and Rescue (SAR) problems at sea, on land and in the air. However, early in the history of mobile radio systems, only a hundred years ago radio equipment was installed on ships and aircraft to improve the safety of life and property at sea and in the air. While these improvements generally started well and assisted saving many lives and much property, they were not effective when there was a sudden, catastrophic loss of the supporting platform. For that reason, the most effective improvements occurred to this plan at the end of the preceding century.

Available high technology and requirements for improvement of safety mobile radio were combined in the early 1970s to enable a new system to be developed to counter the really alarming catastrophic loss problem. At that time, small beacons for ships and aircraft needs in the USA, Canada and in Europe were developed in large numbers. These radio beacons are generally small, inexpensive and very lightweight. At that time, the only monitoring platforms were overflying aircraft and in such a manner aeronautical distress frequencies...

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Products & Services
Distress Radiobeacons

Distress radiobeacons, also known as emergency beacons, PLB, ELT, or EPIRB, are devices which transmit the location of boats, aircraft, and people in distress. The signal is forwarded via a dedicated satellite to a control center which initiates a rescue response.

Buoys and Floats
Buoys and floats are designed to float on the surface of a body of water, or are supported below the water’s surface to mark a location. They are used in marine navigation, boat mooring, nautical communications, and weather observation applications.
Aviation Transponders
Aviation transponders are electronic devices that generate and transmit a signal in response to receiving a radio frequency interrogation for the purposes of identifying aircraft for air traffic control and collision avoidance functions, as well as for IFF (identification friend or foe) military applications.
Piers and Docks
Piers and docks are structural walk paths over water.
Radio Modems
Radio modems are radio frequency transceivers for serial data. They connect to serial ports (RS232, RS422, etc.) and transmit to and receive signals from another matching radio modem.

Topics of Interest

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Overview In the beginning of radio development, mobile communication systems were conceived for the transmission and receiving of telegraphy and telephony signals via antenna from ships, cars, trains...

Overview The safety of navigation through all past ages has been a primary preoccupation for all seamen and shipping owners. Distress and disasters at sea caused by the blind forces of Mother Nature...

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