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The automatic identification system (AIS) is an automatic tracking system that uses transceivers on ships and is used by vessel traffic services (VTS). When satellites are used to receive AIS signatures, the term Satellite-AIS (S-AIS) is used.
While AIS was originally designed for short-range operation as a collision avoidance and navigational aid, it has now been shown to be possible to receive AIS signals by satellite in many, but not all, parts of the world. This is becoming known as S-AIS and is completely different from LRIT.
The idea for satellite monitoring arose later and was mostly intended for maritime surveillance and control, as well as safety monitoring. [3] The Norwegian Defence Research Establishment took the first steps towards AIS satellite use in 2003 paper. A main concern was the low transmitting power of AIS, typically one to twelve watts.
“Dozens of high-resolution satellite images, AIS data, and imagery released by maritime patrol missions tasked with monitoring North Korea’s UN-sanctions-busting activities show North Korean ...
The Maritime Monitoring and Messaging Microsatellite (M3MSat) is a tele-detection satellite developed by the Canadian Space Agency and launched in 2016. Its mission is to demonstrate and test the technology to assess the utility of having in space an Automatic Identification System (AIS) for reading signals from vessels to better manage marine transport in Canadian waters. [2]
Lately, the system has been developed into satellite system, so called satellite AIS, which makes the system more effective. [8] All ocean-going vessels above 300 tons, are supposed to use and transmit via AIS according to the International Maritime Organisation. [8] The satellite constellations help facilitate this with tip and cue ...
Haiyang 1C and Haiyang 1D also maintain an automatic identification system (AIS) payload, used to track and identify ship locations, to collect, store, and relay AIS messages globally. [ 14 ] [ 16 ] HY-1C and HY-1D's AIS system simultaneously operates on four bands: 161.975 MHz , 162.025 MHz, 156.775 MHz, and 156.825 MHz with a swath width of ...
exactEarth provides satellite AIS data services to commercial markets as well as government customers in India, Canada, United States, Australia and across Europe. [1] [2] Founded in 2009, exactEarth is based in Cambridge, Ontario, Canada. The company was publicly traded until 2021 when Spire Global acquired the company.