Experimental study of external interference for LEO-based automatic identification system (AIS)
In 2014, the Japan Aerospace Exploration Agency (JAXA) launched a second space-based automatic identification system (AIS), SPace-based AIS Experiment 2nd (SPAISE2), mounted on DAICHI-2. Then in May 2015, SPAISE2 entered an extended operations phase and is now continuously observing the seas around Japan to evaluate external interference and signal collision. This study reports on the separation of AIS messages and the external interference of large spike noise. And this chapter cites the heatmap of external interference and AIS messages on a low Earth orbit.
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