Design Of Spaceborne Ais System
WIRELESS AND SATELLITE SYSTEMS, PT I(2019)
摘要
The AIS communication system is a global positioning aided navigation system, which can improve the safety of ship operation and the reliability of navigation. A spaceborne AIS system can dynamically monitoring ships in the global area. But It has many challenges such as message collision and signal transmission loss. This paper first designed a LEO AIS constellation, analyzed the coverage of this constellation, and then carried out the design of the on board AIS receiving system, including an array antenna and a receiver. Finally, the method of multi-user signal separation and detection was expounded.
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关键词
Spaceborne, AIS, DBF, Message collision
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