https://www.raspberrypi.org/forums/viewtopic.php?f=78&t=186547
http://deviceplus.jp/
http://ttrftech.tumblr.com/post/95416774356/receiving-ads-b-using-raspberry-pi-and-feed-flightradar2
http://neocat.hatenablog.com/entry/20140402/1396406442