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 Copyright 2013 Free Software Foundation, Inc.
 
 This file is part of GNU Radio
 
 GNU Radio 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, or (at your option)
 any later version.
 
 GNU Radio is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with GNU Radio; see the file COPYING.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin Street,
 Boston, MA 02110-1301, USA.

========================================================================
AUTHOR

Core: 			Nick Foster <[email protected]>
Packet decoder:		Patrik Tast <[email protected]>

========================================================================
OVERVIEW

The Automatic Identification System (AIS) is an automatic tracking 
system used on ships and by vessel traffic services (VTS) for 
identifying and locating vessels by electronically exchanging 
data with other nearby ships AIS Base stations and Satellites.

========================================================================
REQUIREMENTS

gr-ais requires:

* Python
* Gnuradio
* Ettus UHD for use with USRPs
* osmosdr for use with RTLSDR dongles (work in progress)
* CMake

========================================================================
BUILDING

gr-ais uses CMake as its build system. To build, from the top
level directory, type:

$ mkdir build
$ cd build
$ cmake ../
$ make
$ sudo make install

Help, type:
$ ais_rx.py --help

RX example, verbose level=3, decode also packets that fail CRC:
$ ais_rx.py --subdev=A:0 -V 3 -g 65