lobstaboy wrote:Flyin'Dutch' wrote:Anything relying on ground stations and re-broadcasts is, per definition, going to be more accurate than a product with a certified chipset which uses direct line of sight transmissions and receipt.
Always.
Why? I genuinely cannot understand why this can be the case.
Surely the device in the aircraft calculates its position from the satellite signals and broadcasts that. The ground stations receive that and retransmit it allowing it to be received by others over a larger area.
Where can the greater accuracy come from?
I think there was a note of sarcasm in @Flyin'Dutch' post
**update**
Or was it a mistake now corrected, from
more to
lessFD you miss the point entirely, this is about the ADSB/DF17 position reports, and whether they are interpreted as correct or not
The ATOM ground station network displays a smooth and contiguous set of position reports for the aircraft in question
The OP reported position jumps of 15 miles when viewed from his SkyEcho/SD Combination
Both airborne and ground based systems would have received identical DF17 position reports
Thx
Lee