SLVARC Talk on ADS-B and AIS by Jeff Liebermann 08/06/2021
http://www.learnbydestroying.com/jeffl/ADSB%20Talk%202021-08-06/ADSB%20Talk%202021-08-06.htm
What is ADS-B?
Automatic Dependent Surveillance-Broadcast
(ADS-B)
Virtual radar for tracking airplanes. First use to replace expensive ground based radar in Alaska.
Tech
1090 MHz ES (Extended Squitter ) Traffic only
978 MHz UAT (Universal Access Transceiver) Traffic and Weather
Protocols and technology:
https://www.faa.gov/nextgen/programs/adsb/
FlightRadar24
https://www.flightradar24.com/37.17,-122/11
Web site to track airplanes.
My FlightRadar24 feeder status:
You need to register with FlightRadar24 to get an ID, login, password, etc.
If you continuously feed data to FlightRadar24, the business class web site service is free.
Virtual Radar Server
https://www.virtualradarserver.co.uk
Use with FlightRadar24 firmware in Raspberry Pi and web browser to decode ADS/B packets.
What I hear with my FlightRadar24 receiver via VRS:
http://127.0.0.1/VirtualRadar/desktop.html
FlightAware
Web site to track airplanes.
https://flightaware.com/adsb/stats/user/JeffLiebermann
You need to register with FlightRadar24 to get an ID, login, password, etc.
If you continuously feed data to FlightRadar24, the Enterprise class service is free.
What I hear with my FlightAware receiver:
http://192.168.11.77/skyaware/
ADS-B receiver and decoder for Android smartphone
https://hiz.ch/index.php/home/adsb-receiver
https://play.google.com/store/apps/details?id=bs.Avare.ADSB
https://play.google.com/store/apps/details?id=bs.Avare.ADSB.Pro $3.00
AIS – Automatic Identification System
https://en.wikipedia.org/wiki/Automatic_identification_system
Marine channels 87B (161.975 MHz) and 88B (162.025 MHz).
Uses 9600 bits/sec Gaussian minimum shift keying (GMSK) modulation in a 25 kHz channel using the high-level data link control (HDLC) packet protocol. Sound familiar?
Tech
AIS receivers
https://www.google.com/search?q=AIS+receiver&tbm=isch
AIS vessel tracking web sites
https://www.myshiptracking.com
Local stations
Santa Cruz (at UCSC)
https://www.marinetraffic.com/en/ais/details/stations/3455
Mt Umunhum (Actually Bonny Doon. Burned in CZU fire 08/20/2020)
https://www.marinetraffic.com/en/ais/details/stations/112