I've seen some StateVector messages where latitude, longitude numbers are changing, but lastPositionUpdate (and also lastContact) does not change. Is this an ADS-B source problem, or a problem with the API?
I've found the API very easy to use under Java. Thanks!
thanks for reporting this issue. The server sends these time stamps with a granularity of 1 second. If position updates happened within the same second, it won't be reflected by lastContact and lastPositionUpdate. I agree that this can be confusing and think about a solution.