aviatoreee/ais-simulator

Create and transmit AIS frames via gnuradio toolchain and web application in browser. Provides a websocket to PDU message block to change frame content on runtime. Works in burst mode, a frame is send on change immediately, one time. Transmitter remains silent until next change event.

AIS Simulator

An AIS simulator based on AIS BlackToolkit from Trendmicro.

This code provides three GNURadio blocks. Two for AIS frame generation from a given bit string and a websocket server to PDU message converter.

The web application let you select and compose various AIS message and performs conversion to the required bit string that is then send via websocket connection to the GNURadio backend.

Tested in the following environment:

• GnuRadio 3.8.2
• gr-osmosdr 0.2.0
• Ubuntu 20.04 focal
• Python 3.8
• GNU C++ version 9.3.0; Boost 1.71.
• HackRF One (2018.01.1)

Building

Dependencies

You need to install the following build dependencies first:

sudo apt-get install -y \
    cmake \
    autoconf \
    libtool \
    pkg-config \
    build-essential \
    python-docutils \
    libcppunit-dev \
    swig \
    doxygen \
    python-scipy \
    python-gtk2 \
    gnuradio-dev \
    gr-osmosdr \
    libosmocore-dev

Build & Installation

See README on how to build and install the custom GnuRadio block.

Note: gr-ais_simulator blocks need to rebuild and installed after GnuRadio toolchain update.

How to run

1. Start AIS simulator $ python3 -u ais-simulator.py
2. Open ./webapp/ais-simulator.html in browser.
3. Select AIS message type, modify parameters and send message...

Tested against rtl_ais and Comar Systems CSA300 class A AIS transponder via over the air transmission.

License

Copyright 2020, Mictronics

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or any later version.