Automatic Identification System (AIS)

Automatic Identification System (AIS)

Frequencies	161.975 MHz,162.025 MHz
Frequency Range	161.975 MHz - 162.025 MHz
Mode	NFM
Modulation	GMSK
ACF	—
Emission Designator	—
Bandwidth	25 kHz
Location	Worldwide
Short Description	Automatic Identification System (AIS) is used by ships to broadcast position and vessel information.
I/Q Raw Recording	Download file
Audio Sample

Automatic Identification System (AIS) is used by ships to broadcast position and vessel information. Uses 9.6 kbpsKilobits per second (kbps) GMSK modulation.

Frequencies

Primary Channel A - 161.975 MHzMegaHertz (MHz) 10^6 Hz

Primary Channel B - 162.025 MHzMegaHertz (MHz) 10^6 Hz

Decoding Software

Hobby Level Software

• ShipPlotter (Free for 21 days)
• AISMon
• MultiPSK
• gr-ais
• AIS_Plot
• GNU AIS
• NavMonPC
• MilltechMarine.com - Your AIS Experts on Receivers
• AirNav ShipTrax - AIS Ship Tracker (ShipTrax Free Trial)
• Kinetic AIS-1eR - Marine AIS Receiver/Server & Full Marine Band Radio
• OpenCPN
• OpenWebRX+
• PNAis (in French)
• RTL-SDR AIS on Android
• SDRangel
• AIS-catcher
• rtl-ais

Professional Software

• go2DECODE
• go2MONITOR
• Rohde&Schwarz CA100

Decoding Tutorials

• Decoding AIS with an RTL-SDR
• Decoding 2X AIS Channels with SDR Console, AISMon and OpenCPN
• Decoding AIS on Android device

Video Examples

• AIS Ship Position Second Attempt with RTL SDR (RTL2832), SDR Sharp and ShipPlotter

Additional Links

• All About AIS Info Page
• Wikipedia Automatic Identification System
• RadioScanner.RU AIS
• RadioReference.com AIS

Additional Images