Data Question on VRD165 on 042015 KJFK - KLAX


#1

What would cause such a data anamoly from this feeder site? Could simply moving the antenna during a position recording give this erroneous reading on 042015_VRD165 KJFK - LAX?

Mon 10:26:01 AM 40.8412 -74.4666 279° West 271 312 10,300 1,832 Climbing FlightAware ADS-B (KTEB)
Mon 10:26:51 AM 40.8504 -74.5533 279° West 307 353 11,400 1,677 Climbing FlightAware ADS-B (KTEB)
Mon 10:28:42 AM 40.8769 -74.7803 278° West 290 334 14,800 1,830 Climbing FlightAware ADS-B (KRDG)
Mon 10:29:12 AM 40.8845 -74.8455 279° West 359 413 15,700 1,624 Climbing FlightAware ADS-B (KEWR)
Mon 10:30:07 AM 40.8979 -74.9613 279° West 369 425 17,100 1,860 Climbing FlightAware ADS-B (KRDG)
Mon 10:30:52 AM 40.9052 -75.0250 98° East 850 978 18,800 1,829 Climbing FlightAware ADS-B (KABE)
Mon 10:31:29 AM 40.9192 -75.1506 276° West 370 426 19,600 1,245 Climbing FlightAware ADS-B (KPHL)
Mon 10:31:45 AM 40.9190 -75.1772 262° West 364 419 19,900 1,273 Climbing FlightAware ADS-B (KAVP)
Mon 10:32:02 AM 40.9098 -75.2219 252° West 362 417 20,300 1,320 Climbing FlightAware ADS-B (KPHL)

Any ideas? Thx


#2

It is usually time synchronization not being perfect on that feeder. Moving the antenna doesn’t alter the positional values reported since they are measured and transmitted literally from the aircraft.


#3

Thanks. Is that something that can be corrected at the receiver or is this more of just a one time data hiccup?