It is an Android app that decodes AIS messages transmitted by vessels , ships, over radio using a cheap USB DVB-T / RTL-SDR stick.
AIS messages are transmitted over VHF. Channel A: 161.975 MHz Channel B: 162.025 MHz. The app decodes both channels simultaneously. This app needs no internet connection, it decodes the real time received messages. This is a truly standalone full featured AIS receiver.
The received messages will be translated into NMEA0183 strings which can be forwarded then via UDP or TCP streaming to third-party apps, PC programs or other devices. Such Apps can display the received AIS data for example on a map along with information about the received objects.
Please note: The app needs additional (very cheap) hardware to receive the radio signals.
Dealing with different RTL-SDR dongle you may hear about that in some applications a correct PPM value is essential that a specific type of software is working correctly. So what is PPM and how do i find it out ?
David Berry from Practical Boat Owner shows how to make an AIS receiver with an Android Phone or Tablet and a RTL-SDR.com dongle. He use AIS Share to stream data to Boat Beacon a very popular chart navigation app. In his article he provides information about the technical background of AIS( automatic information system) and he is describing how he build a cheap AIS Receiver with a RTL-SDR Dongle and my App. The full article was issued in the February 2019 edition. https://www.pbo.co.uk/publication/pbo/february-2019
Or just watch my YouTube video about AIS SHARE and BoatBeacon
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