We read that the JPDA tracker expects detections from a sensor to have identical time stamps. Since our detections come from radars with a revolution time of 3 seconds, this has an impact on the accuracy. Furthermore, a vessel that moves against the direction of the radar sweep can be detected at the beginning of the sweep and also at the end. This is not a problem if the detections have a difference in time stamp of ~3 seconds, but can cause problems if both detections are treated as simultaneous detections. A similar problem arises when a vessel moves along with the direction of the radar sweep, because in that case it can be missed completely during one sweep. In that case, the previous detection is towards the end of the previous sweep and the next detection is near the start of the next sweep. When taking the average time stamp of all detections during these sweeps, the time difference that is taken into account between these detections would be about 6 seconds, while it's actually just a little over 3 seconds.
We have tried to just give each detection their actual time stamps (based on when the radar passed them) before feeding the detections of a full radar sweep to the tracker, but that gives erratic results. Therefore, my question is, is there a good way to take the actual time stamps of the measurements into account when using the JPDA tracker? Is there maybe a good way to provide the JPDA tracker with partial radar sweeps, without losing tracks that were not updated during a few subsequent partial radar sweeps? Or is there another tracker that is better at handling this kind of radar data?