These non-ADS-B MLAT tracks are causing issues in the San Francisco Bay Area - I'm seeing the same thing, but unfortunately we have two different T-SJCNN receivers posting two different aircraft coordinates with different ICAO numbers for the same aircraft! So flightradar24 is showing TWO airplanes where there are none actually transmitting ADS-B coordinates.
I'm all for more aircraft but these need to be handled properly (throwing away the aircraft with the invalid ICAO and categorizing the valid track as MLAT would be nice). Seeing two aircraft near each other with nearly the same altitude is a bit surprising but I've gotten used to filtering it mentally. The inaccuracy of the MLAT receivers is a little jarring as well when you're used to observing solid ADS-B coordinates too but that is another topic.
I'm all for more aircraft but these need to be handled properly (throwing away the aircraft with the invalid ICAO and categorizing the valid track as MLAT would be nice). Seeing two aircraft near each other with nearly the same altitude is a bit surprising but I've gotten used to filtering it mentally. The inaccuracy of the MLAT receivers is a little jarring as well when you're used to observing solid ADS-B coordinates too but that is another topic.
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