• miniADSB receiver module (in active use)
• Edward's receiver design based on SAT Tuners (doesn't work that well)

• Multilateration
• Airframe database
• Radar basics
• Downlink Broadcast (detailed info regarding ADS-B)
• GR-Air-Modes (open-source ADS-B software-defined radio implementation)

Information on manchaster decoding from atmel