JumpuFOKKERjump, the experts tell me that it is really easy to spoof a false position with ADS-B – simply squit a false GPS position. In relation to multilateration, the experts tell me that it is a lot more difficult. This is because you really need the transmitter to be in the location that it is for it to give a position using multilateration. It works by timing and actually measures the distance from 3 or more stations.
The latest rumour is that the FAA is looking at a combined multilateration ADS-B system to reduce the chance of spoofing.
No, I’m not griping about Airservices not delivering. I’m simply asking when the Tasmanian system will be up and going.
In Tasmania a person with an ADS-B type receiver will not be able to detect the position of aircraft using Mode C and multilateration.