Argos (satellite system)

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Argos is a global satellite-based system that collects, processes, and disseminates (spreads, distributes) environmental data from fixed and mobile platforms around the world.^[1] The worldwide tracking and environmental monitoring system is the results from Franco-American cooperation. In addition to satellite data collection, the main feature of the Argos system is its to ability to geographically locate the data source from any location on Earth using the Doppler effect;^[2] which refers to the apparent change in the wavelength due to relative motion between its source and observer. Argos is operated by CLS/Argos, based in Toulouse, France, and its United States subsidiary, CLS America.