I assume the RSSI value that accompanies TIS-B messages goes with the ground station. In that case, it should be possible to look at RSSI values to get a hint on how many ground stations are being picked up. I’ve not looked into this in detail yet, but I’m pretty sure I recall seeing some in the -4 range and others in the -14 range. Those are far enough apart that I’d suspect different ground stations. I’d expect these figures to be relatively consistent for each station.
The best list of TIS-B locations I have see is at: https://dl.dropboxusercontent.com/u/58910037/user_waypoints.kml
This is a google earth kml file so you can zoom in with great detail. The ones in Texas are identified as TX001 etc. Loads of them in Texas - don’t know if they are all operational yet.
Interesting that it opens in Google Earth but not in Google Maps.
[quote=“ExCalbr”]
Interesting that it opens in Google Earth but not in Google Maps.[/quote]
Import map features from a file - Computer - My Maps Help tells you how.
[quote=“rwinterhoff”]
[quote=“ExCalbr”]
Interesting that it opens in Google Earth but not in Google Maps.[/quote]
tells you how.
That is what I was doing that didn’t work. It acted like it was processing, but it did not work. I’ll try again when I’m not at work.
OK. I successfully added a layer with the TX ground stations. Can you tell me where the data came from so I can appropriately credit the source?
Perhaps the data set was too large for Google Maps, so editing out all but the Texas sites may have been what made it work. Anyway, that’s all I’m interested in for this project.